CU-2E15SBE - CU-5E34PBE - Air-conditioner PANASONIC - Free user manual and instructions

USER MANUAL CU-2E15SBE - CU-5E34PBE PANASONIC

Order No: PAPAMY1305053CE Air Conditioner Indoor Unit CS-E9PB4EA CS-E12PB4EA Outdoor Unit CU-E9PB4EA CU-E12PB4EA Destination Europe Please file and use this manual together with the Service Manual for Model No. CU-2E15PBE, CU-2E18PBE, CU-3E18PBE, CU-4E23PBE, CU-4E27PBE, CU-5E34PBE, Order No. PAPAMY1301048CE, PAPAMY1303046CE WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the products dealt with in this service information by anyone else could result in serious injury or death.

PRECAUTION OF LOW TEMPERATURE

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Corporation 2013.

4. Location of Controls and Components ..........24

16. Disassembly and Assembly Instructions ......95

12.6 Quiet Operation (Heating) ..........................56

Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.

WARNING This indication shows the possibility of causing death or serious injury. CAUTION This indication shows the possibility of causing injury or damage to properties. The items to be followed are classified by the symbols: This symbol denotes item that is PROHIBITED from doing.

Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference. WARNING

Do not modify the machine, part, material during repairing service.

If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.

Do not wrench the fasten terminal. Pull it out or insert it straightly.

Engage dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage, electrical shock or fire.

Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.

Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock.

Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.

This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown. Do not use joint cable for indoor / outdoor connection cable. Use the specified Indoor/Outdoor connection cable, refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor / outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock.

When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.).

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident.

This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.

Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.

Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire.

Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage. For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. Thickness or copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm. It is desirable that the amount of residual oil less than 40 mg/10 m. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc).

During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of compressor while compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.)

After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.

Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire.

Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.

Must not use other parts except original parts described in catalog and manual.

Using of refrigerant other than the specified type may cause product damage, burst and injury etc. CAUTION

Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage.

Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.

Select an installation location which is easy for maintenance.

Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C). Pb free solder will tend to splash when heated too high (about 1100°F / 600°C). Power supply connection to the room air conditioner. Use power supply cord 3 x 1.5 mm (1.0 ~ 1.5HP) type designation 60245 IEC 57 or heavier cord. Connect the power supply cord of the air conditioner to the mains using one of the following method. Power supply point should be in easily accessible place for power disconnection in case of emergency. In some countries, permanent connection of this air conditioner to the power supply is prohibited.

1) Power supply connection to the receptacle using power plug.

Use an approved 15/16A (1.0 ~ 1.5HP) power plug with earth pin for the connection to the socket.

2) Power supply connection to a circuit breaker for the permanent connection.

Use an approved 16A circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take care of the liquid refrigerant, it may cause frostbite.

Installation or servicing work: It may need two people to carry out the installation or servicing work.

Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

Do not sit or step on the unit, you may fall down accidentally.

Do not touch the sharp aluminium fins or edges of metal parts. If you are required to handle sharp parts during installation or servicing, please wear hand glove. Sharp parts may cause injury.

Model Indoor CS-E9PB4EA Outdoor CU-E9PB4EA Performance Test Condition EUROVENT Phase, Hz Power Supply Single, 50

Annual Consumption kWh

Annual Consumption kWh

Annual Consumption kWh

Starting Current (A)

SHi Outdoor Fan Indoor Outdoor

6.35 (1/4) / 9.52 (3/8)

Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft)

Additional Gas Amount g/m (oz/ft) 20 (0.2) Length for Additional Gas m (ft)

Piping Model Drain Hose

1330:1270 × 210 × 25.4 Fin Material Aluminium Outdoor Fin Type Heat Exchanger Row × Stage × FPI Size (W × H × L) Air Filter Corrugated Fin 2 × 28 × 17

Power Supply Power Supply Cord Outdoor

Nil Thermostat Electronic Contol Protection Device Electronic Contol Dry Bulb Indoor Operation Range Outdoor Operation Range Cooling Heating Cooling Heating Wet Bulb Maximum °C

Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air temperature of 35°C DRY BULB (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb) Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) Ú3 Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor 2/1°C Ú4 Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor -7/-8°C Standby power consumption ≤0.7W (when switched OFF by remote control, except under self protection control). Specifications are subjected to change without prior notice for further improvement.

Model Indoor CS-E12PB4EA Outdoor CU-E12PB4EA Performance Test Condition EUROVENT Phase, Hz Power Supply Single, 50

1.20k Annual Consumption kWh

Annual Consumption kWh

Annual Consumption kWh

Starting Current (A)

SHi Outdoor Fan Indoor Outdoor

6.35 (1/4) / 9.52 (3/8)

Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft)

Additional Gas Amount g/m (oz/ft) 20 (0.2) Length for Additional Gas m (ft)

Piping Model Drain Hose

1330:1270 × 210 × 25.4 Fin Material Aluminium Outdoor Fin Type Heat Exchanger Row × Stage × FPI Size (W × H × L) Air Filter Corrugated Fin 2 × 31 × 17

Power Supply Power Supply Cord Outdoor

Nil Thermostat Electronic Contol Protection Device Electronic Contol Dry Bulb Indoor Operation Range Outdoor Operation Range Cooling Heating Cooling Heating Wet Bulb Maximum °C

Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°F Wet Bulb) and outdoor air temperature of 35°C DRY BULB (95°F Dry Bulb), 24°C Wet Bulb (75.2°F Wet Bulb) 2. Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) Ú3 Heating low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor 2/1°C Ú4 Heating extreme low temperature capacity, Input Power and COP measured at 230 V, indoor temperature 20°C, outdoor -7/-8°C Standby power consumption ≤0.7W (when switched OFF by remote control, except under self protection control). Specifications are subjected to change without prior notice for further improvement.

Multi Split Combination Possibility: o A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E15PBE, CU-2E18PBE. o A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E18PBE. o A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E23PBE. o A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E27PBE. o A single outdoor unit enables air conditioning of up to five separate rooms for CU-5E34PBE. CONNECTABLE INDOOR UNIT OUTDOOR UNIT

Total allowable pipe length (m) Total pipe length for maximum chargeless length (m) Additional gas amount over chargeless length (g/m) From 3.2kW to 5.6kW From 3.2kW to 6.4kW From 4.5kW to 9.0kW From 4.5kW to 11.0 kW

Note: “●” : Available Remarks for CU-2E15PBE / CU-2E18PBE

1. At least two indoor units must be connected.

2. The total nominal cooling capacity of indoor units that will be connected to outdoor unit must be within

connectable capacity range of indoor unit. (as shown in the table above) Example: The indoor units’ combination below is possible to connect to CU-2E15PBE. (Total nominal capacity of indoor units is between 3.2kW to 5.6kW)

1) Two CS-E7PKEW only (Total nominal cooling capacity is 4.0kW)

2) One CS-E7PKEW and one CS-E9PKEW. (Total nominal cooling capacity is 4.5kW)

Remarks for CU-3E18PBE / CU-4E23PBE

1. At least two indoor units must be connected.

2. The total nominal cooling capacity of indoor units that will be connected to outdoor unit must be within

connectable capacity range of indoor unit. (as shown in the table above) Example: The indoor units’ combination below is possible to connect to CU-3E18PBE. (Total nominal capacity of indoor units is between 4.5kW to 9.0kW)

1) Two CS-E9PKEW only (Total nominal cooling capacity is 5.0kW)

2) Three CS-E12PKEW. (Total nominal cooling capacity is 9.6kW)

From 4.5kW to 13.6kW From 4.5kW to 17.5 kW

Note: “●” : Available Remarks for CU-4E27PBE / CU-5E34PBE

1. At least two indoor units must be connected.

2. The total nominal cooling capacity of indoor units that will be connected to outdoor unit must be within

connectable capacity range of indoor unit. (as shown in the table above) Example: The indoor units’ combination below is possible to connect to CU-4E27PBE. (Total nominal capacity of indoor units is between 4.5kW to 13.6kW)

1) Two CS-E9PKEW only (Total nominal cooling capacity is 5.0kW)

2) Three CS-E12PKEW. (Total nominal cooling capacity is 9.6kW)

Indoor Unit : CS-E7/9/12/15/18/21/24PKEW, CS-E9/12/18GFEW, CS-ME9/12/18/21PB4EA, CS-ME9/12/18PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-4E27PBE 4 Room 3 Room 2 Room 1 Room Indoor Unit Capacity (kW) Total Indoor Capacity (kW) Indoor Unit Capacity (kW) Total Indoor Capacity (kW) Indoor Unit Capacity (kW) Total Indoor Capacity (kW) Indoor Unit Capacity (kW) Total Indoor Capacity (kW) 2.0+2.0+2.0+2.0 2.0+2.0+2.0+2.5 2.0+2.0+2.0+2.8 2.0+2.0+2.0+3.2 2.0+2.0+2.0+4.0 2.0+2.0+2.0+5.0 2.0+2.0+2.0+6.0 2.0+2.0+2.0+7.0 2.0+2.0+2.5+2.5 2.0+2.0+2.5+2.8 2.0+2.0+2.5+3.2 2.0+2.0+2.5+4.0 2.0+2.0+2.5+5.0 2.0+2.0+2.5+6.0 2.0+2.0+2.5+7.0 2.0+2.0+2.8+2.8 2.0+2.0+2.8+3.2 2.0+2.0+2.8+4.0 2.0+2.0+2.8+5.0 2.0+2.0+2.8+6.0 2.0+2.0+3.2+3.2 2.0+2.0+3.2+4.0 2.0+2.0+3.2+5.0 2.0+2.0+3.2+6.0 2.0+2.0+4.0+4.0 2.0+2.0+4.0+5.0 2.0+2.5+2.5+2.5 2.0+2.5+2.5+2.8 2.0+2.5+2.5+3.2 2.0+2.5+2.5+4.0 2.0+2.5+2.5+5.0 2.0+2.5+2.5+6.0 2.0+2.5+2.8+2.8 2.0+2.5+2.8+3.2 2.0+2.5+2.8+4.0 2.0+2.5+2.8+5.0 2.0+2.5+2.8+6.0 2.0+2.5+3.2+3.2 2.0+2.5+3.2+4.0 2.0+2.5+3.2+5.0 2.0+2.5+4.0+4.0 2.0+2.5+4.0+5.0 2.0+2.8+2.8+2.8 2.0+2.8+2.8+3.2 2.0+2.8+2.8+4.0 2.0+2.8+2.8+5.0 2.0+2.8+2.8+6.0 2.0+2.8+3.2+3.2 2.0+2.8+3.2+4.0 2.0+2.8+3.2+5.0 2.0+2.8+4.0+4.0 2.0+3.2+3.2+3.2 2.0+3.2+3.2+4.0 2.0+3.2+3.2+5.0 2.0+3.2+4.0+4.0 2.5+2.5+2.5+2.5 2.5+2.5+2.5+2.8 2.5+2.5+2.5+3.2

4 Room Indoor Unit Total Indoor Capacity (kW) Capacity (kW) 2.5+2.5+2.5+4.0 2.5+2.5+2.5+5.0 2.5+2.5+2.5+6.0 2.5+2.5+2.8+2.8 2.5+2.5+2.8+3.2 2.5+2.5+2.8+4.0 2.5+2.5+2.8+5.0 2.5+2.5+3.2+3.2 2.5+2.5+3.2+4.0 2.5+2.5+3.2+5.0 2.5+2.5+4.0+4.0 2.5+2.8+2.8+2.8 2.5+2.8+2.8+3.2 2.5+2.8+2.8+4.0 2.5+2.8+2.8+5.0 2.5+2.8+3.2+3.2 2.5+2.8+3.2+4.0 2.5+2.8+3.2+5.0 2.5+2.8+4.0+4.0 2.5+3.2+3.2+3.2 2.5+3.2+3.2+4.0 2.8+2.8+2.8+2.8 2.8+2.8+2.8+3.2 2.8+2.8+2.8+4.0 2.8+2.8+2.8+5.0 2.8+2.8+3.2+3.2 2.8+2.8+3.2+4.0 2.8+2.8+4.0+4.0 2.8+3.2+3.2+3.2 2.8+3.2+3.2+4.0 3.2+3.2+3.2+3.2 3.2+3.2+3.2+4.0

Indoor Unit : CS-E7/9/12/15/18/21/24PKEW, CS-E9/12/18GFEW, CS-ME9/12/18/21PB4EA, CS-ME9/12/18PD3EA, CS-E9/12PD3EA, CS-E9/12PB4EA Outdoor Unit : CU-5E34PBE 5 Room Indoor Unit Capacity (kW) 2.0+2.0+2.0+2.0+2.0 2.0+2.0+2.0+2.0+2.5 2.0+2.0+2.0+2.0+2.8 2.0+2.0+2.0+2.0+3.2 2.0+2.0+2.0+2.0+4.0 2.0+2.0+2.0+2.0+5.0 2.0+2.0+2.0+2.0+6.0 2.0+2.0+2.0+2.0+7.0 2.0+2.0+2.0+2.5+2.5 2.0+2.0+2.0+2.5+2.8 2.0+2.0+2.0+2.5+3.2 2.0+2.0+2.0+2.5+4.0 2.0+2.0+2.0+2.5+5.0 2.0+2.0+2.0+2.5+6.0 2.0+2.0+2.0+2.5+7.0 2.0+2.0+2.0+2.8+2.8 2.0+2.0+2.0+2.8+3.2 2.0+2.0+2.0+2.8+4.0 2.0+2.0+2.0+2.8+5.0 2.0+2.0+2.0+2.8+6.0 2.0+2.0+2.0+2.8+7.0 2.0+2.0+2.0+3.2+3.2 2.0+2.0+2.0+3.2+4.0 2.0+2.0+2.0+3.2+5.0 2.0+2.0+2.0+3.2+6.0 2.0+2.0+2.0+3.2+7.0 2.0+2.0+2.0+4.0+4.0 2.0+2.0+2.0+4.0+5.0 2.0+2.0+2.0+4.0+6.0 2.0+2.0+2.0+4.0+7.0 2.0+2.0+2.0+5.0+5.0 2.0+2.0+2.0+5.0+6.0 2.0+2.0+2.5+2.5+2.5 2.0+2.0+2.5+2.5+2.8 2.0+2.0+2.5+2.5+3.2 2.0+2.0+2.5+2.5+4.0 2.0+2.0+2.5+2.5+5.0 2.0+2.0+2.5+2.5+6.0 2.0+2.0+2.5+2.5+7.0 2.0+2.0+2.5+2.8+2.8 2.0+2.0+2.5+2.8+3.2 2.0+2.0+2.5+2.8+4.0 2.0+2.0+2.5+2.8+5.0 2.0+2.0+2.5+2.8+6.0 2.0+2.0+2.5+2.8+7.0 2.0+2.0+2.5+3.2+3.2 2.0+2.0+2.5+3.2+4.0 2.0+2.0+2.5+3.2+5.0 2.0+2.0+2.5+3.2+6.0 2.0+2.0+2.5+3.2+7.0 2.0+2.0+2.5+4.0+4.0 2.0+2.0+2.5+4.0+5.0 2.0+2.0+2.5+4.0+6.0 2.0+2.0+2.5+4.0+7.0 2.0+2.0+2.5+5.0+5.0 2.0+2.0+2.5+5.0+6.0 2.0+2.0+2.8+2.8+2.8 Total Indoor Capacity (kW)

4 Room Total Indoor Indoor Unit Capacity Capacity (kW) (kW) 2.0+2.0+2.0+2.0 2.0+2.0+2.0+2.5 2.0+2.0+2.0+2.8 2.0+2.0+2.0+3.2 2.0+2.0+2.0+4.0 2.0+2.0+2.0+5.0 2.0+2.0+2.0+6.0 2.0+2.0+2.0+7.0 2.0+2.0+2.5+2.5 2.0+2.0+2.5+2.8 2.0+2.0+2.5+3.2 2.0+2.0+2.5+4.0 2.0+2.0+2.5+5.0 2.0+2.0+2.5+6.0 2.0+2.0+2.5+7.0 2.0+2.0+2.8+2.8 2.0+2.0+2.8+3.2 2.0+2.0+2.8+4.0 2.0+2.0+2.8+5.0 2.0+2.0+2.8+6.0 2.0+2.0+2.8+7.0 2.0+2.0+3.2+3.2 2.0+2.0+3.2+4.0 2.0+2.0+3.2+5.0 2.0+2.0+3.2+6.0 2.0+2.0+3.2+7.0 2.0+2.0+4.0+4.0 2.0+2.0+4.0+5.0 2.0+2.0+4.0+6.0 2.0+2.0+4.0+7.0 2.0+2.0+5.0+5.0 2.0+2.0+5.0+6.0 2.0+2.0+5.0+7.0 2.0+2.0+6.0+6.0 2.0+2.0+6.0+7.0 2.0+2.5+2.5+2.5 2.0+2.5+2.5+2.8 2.0+2.5+2.5+3.2 2.0+2.5+2.5+4.0 2.0+2.5+2.5+5.0 2.0+2.5+2.5+6.0 2.0+2.5+2.5+7.0 2.0+2.5+2.8+2.8 2.0+2.5+2.8+3.2 2.0+2.5+2.8+4.0 2.0+2.5+2.8+5.0 2.0+2.5+2.8+6.0 2.0+2.5+2.8+7.0 2.0+2.5+3.2+3.2 2.0+2.5+3.2+4.0 2.0+2.5+3.2+5.0 2.0+2.5+3.2+6.0 2.0+2.5+3.2+7.0 2.0+2.5+4.0+4.0 2.0+2.5+4.0+5.0 2.0+2.5+4.0+6.0 2.0+2.5+4.0+7.0

5 Room Indoor Unit Capacity (kW) 2.0+2.0+2.8+2.8+3.2 2.0+2.0+2.8+2.8+4.0 2.0+2.0+2.8+2.8+5.0 2.0+2.0+2.8+2.8+6.0 2.0+2.0+2.8+2.8+7.0 2.0+2.0+2.8+3.2+3.2 2.0+2.0+2.8+3.2+4.0 2.0+2.0+2.8+3.2+5.0 2.0+2.0+2.8+3.2+6.0 2.0+2.0+2.8+3.2+7.0 2.0+2.0+2.8+4.0+4.0 2.0+2.0+2.8+4.0+5.0 2.0+2.0+2.8+4.0+6.0 2.0+2.0+2.8+5.0+5.0 2.0+2.0+3.2+3.2+3.2 2.0+2.0+3.2+3.2+4.0 2.0+2.0+3.2+3.2+5.0 2.0+2.0+3.2+3.2+6.0 2.0+2.0+3.2+3.2+7.0 2.0+2.0+3.2+4.0+4.0 2.0+2.0+3.2+4.0+5.0 2.0+2.0+3.2+4.0+6.0 2.0+2.0+3.2+5.0+5.0 2.0+2.0+4.0+4.0+4.0 2.0+2.0+4.0+4.0+5.0 2.0+2.5+2.5+2.5+2.5 2.0+2.5+2.5+2.5+2.8 2.0+2.5+2.5+2.5+3.2 2.0+2.5+2.5+2.5+4.0 2.0+2.5+2.5+2.5+5.0 2.0+2.5+2.5+2.5+6.0 2.0+2.5+2.5+2.5+7.0 2.0+2.5+2.5+2.8+2.8 2.0+2.5+2.5+2.8+3.2 2.0+2.5+2.5+2.8+4.0 2.0+2.5+2.5+2.8+5.0 2.0+2.5+2.5+2.8+6.0 2.0+2.5+2.5+2.8+7.0 2.0+2.5+2.5+3.2+3.2 2.0+2.5+2.5+3.2+4.0 2.0+2.5+2.5+3.2+5.0 2.0+2.5+2.5+3.2+6.0 2.0+2.5+2.5+3.2+7.0 2.0+2.5+2.5+4.0+4.0 2.0+2.5+2.5+4.0+5.0 2.0+2.5+2.5+4.0+6.0 2.0+2.5+2.5+5.0+5.0 2.0+2.5+2.8+2.8+2.8 2.0+2.5+2.8+2.8+3.2 2.0+2.5+2.8+2.8+4.0 2.0+2.5+2.8+2.8+5.0 2.0+2.5+2.8+2.8+6.0 2.0+2.5+2.8+2.8+7.0 2.0+2.5+2.8+3.2+3.2 2.0+2.5+2.8+3.2+4.0 2.0+2.5+2.8+3.2+5.0 2.0+2.5+2.8+3.2+6.0 2.0+2.5+2.8+3.2+7.0 2.0+2.5+2.8+4.0+4.0 2.0+2.5+2.8+4.0+5.0 2.0+2.5+2.8+4.0+6.0 Total Indoor Capacity (kW)

5 Room Indoor Unit Capacity (kW) 2.0+2.5+2.8+5.0+5.0 2.0+2.5+3.2+3.2+3.2 2.0+2.5+3.2+3.2+4.0 2.0+2.5+3.2+3.2+5.0 2.0+2.5+3.2+3.2+6.0 2.0+2.5+3.2+4.0+4.0 2.0+2.5+3.2+4.0+5.0 2.0+2.5+4.0+4.0+4.0 2.0+2.5+4.0+4.0+5.0 2.0+2.8+2.8+2.8+2.8 2.0+2.8+2.8+2.8+3.2 2.0+2.8+2.8+2.8+4.0 2.0+2.8+2.8+2.8+5.0 2.0+2.8+2.8+2.8+6.0 2.0+2.8+2.8+2.8+7.0 2.0+2.8+2.8+3.2+3.2 2.0+2.8+2.8+3.2+4.0 2.0+2.8+2.8+3.2+5.0 2.0+2.8+2.8+3.2+6.0 2.0+2.8+2.8+4.0+4.0 2.0+2.8+2.8+4.0+5.0 2.0+2.8+3.2+3.2+3.2 2.0+2.8+3.2+3.2+4.0 2.0+2.8+3.2+3.2+5.0 2.0+2.8+3.2+3.2+6.0 2.0+2.8+3.2+4.0+4.0 2.0+2.8+3.2+4.0+5.0 2.0+2.8+4.0+4.0+4.0 2.0+3.2+3.2+3.2+3.2 2.0+3.2+3.2+3.2+4.0 2.0+3.2+3.2+3.2+5.0 2.0+3.2+3.2+4.0+4.0 2.0+3.2+3.2+4.0+5.0 2.0+3.2+4.0+4.0+4.0 2.5+2.5+2.5+2.5+2.5 2.5+2.5+2.5+2.5+2.8 2.5+2.5+2.5+2.5+3.2 2.5+2.5+2.5+2.5+4.0 2.5+2.5+2.5+2.5+5.0 2.5+2.5+2.5+2.5+6.0 2.5+2.5+2.5+2.5+7.0 2.5+2.5+2.5+2.8+2.8 2.5+2.5+2.5+2.8+3.2 2.5+2.5+2.5+2.8+4.0 2.5+2.5+2.5+2.8+5.0 2.5+2.5+2.5+2.8+6.0 2.5+2.5+2.5+2.8+7.0 2.5+2.5+2.5+3.2+3.2 2.5+2.5+2.5+3.2+4.0 2.5+2.5+2.5+3.2+5.0 2.5+2.5+2.5+3.2+6.0 2.5+2.5+2.5+4.0+4.0 2.5+2.5+2.5+4.0+5.0 2.5+2.5+2.5+4.0+6.0 2.5+2.5+2.5+5.0+5.0 2.5+2.5+2.8+2.8+2.8 2.5+2.5+2.8+2.8+3.2 2.5+2.5+2.8+2.8+4.0 2.5+2.5+2.8+2.8+5.0 2.5+2.5+2.8+2.8+6.0 2.5+2.5+2.8+3.2+3.2 Total Indoor Capacity (kW)

5 Room Indoor Unit Capacity (kW) 2.5+2.5+2.8+3.2+4.0 2.5+2.5+2.8+3.2+5.0 2.5+2.5+2.8+3.2+6.0 2.5+2.5+2.8+4.0+4.0 2.5+2.5+2.8+4.0+5.0 2.5+2.5+3.2+3.2+3.2 2.5+2.5+3.2+3.2+4.0 2.5+2.5+3.2+3.2+5.0 2.5+2.5+3.2+3.2+6.0 2.5+2.5+3.2+4.0+4.0 2.5+2.5+3.2+4.0+5.0 2.5+2.5+4.0+4.0+4.0 2.5+2.8+2.8+2.8+2.8 2.5+2.8+2.8+2.8+3.2 2.5+2.8+2.8+2.8+4.0 2.5+2.8+2.8+2.8+5.0 2.5+2.8+2.8+2.8+6.0 2.5+2.8+2.8+3.2+3.2 2.5+2.8+2.8+3.2+4.0 2.5+2.8+2.8+3.2+5.0 2.5+2.8+2.8+3.2+6.0 2.5+2.8+2.8+4.0+4.0 2.5+2.8+2.8+4.0+5.0 2.5+2.8+3.2+3.2+3.2 2.5+2.8+3.2+3.2+4.0 2.5+2.8+3.2+3.2+5.0 2.5+2.8+3.2+4.0+4.0 2.5+2.8+3.2+4.0+5.0 2.5+2.8+4.0+4.0+4.0 2.5+3.2+3.2+3.2+3.2 2.5+3.2+3.2+3.2+4.0 2.5+3.2+3.2+3.2+5.0 2.5+3.2+3.2+4.0+4.0 2.8+2.8+2.8+2.8+2.8 2.8+2.8+2.8+2.8+3.2 2.8+2.8+2.8+2.8+4.0 2.8+2.8+2.8+2.8+5.0 2.8+2.8+2.8+2.8+6.0 2.8+2.8+2.8+3.2+3.2 2.8+2.8+2.8+3.2+4.0 2.8+2.8+2.8+3.2+5.0 2.8+2.8+2.8+4.0+4.0 2.8+2.8+2.8+4.0+5.0 2.8+2.8+3.2+3.2+3.2 2.8+2.8+3.2+3.2+4.0 2.8+2.8+3.2+3.2+5.0 2.8+2.8+3.2+4.0+4.0 2.8+3.2+3.2+3.2+3.2 2.8+3.2+3.2+3.2+4.0 2.8+3.2+3.2+3.2+5.0 2.8+3.2+3.2+4.0+4.0 3.2+3.2+3.2+3.2+3.2 3.2+3.2+3.2+3.2+4.0 Total Indoor Capacity (kW)

Environment Protection o Non-ozone depletion substances refrigerant (R410A)

Long Installation Piping o Long piping up to 20 meters

Easy to use remote control

Quality Improvement o Random auto restart after power failure for safety restart operation o Gas leakage protection o Prevent compressor reverse cycle o Inner protector to protect compressor o Noise prevention during soft dry operation

Operation Improvement o Quiet mode to reduce the indoor unit operating sound o Powerful mode to reach the desired room temperature quickly o 24-hour timer setting

4. Location of Controls and Components

Note: Resistance at 20°C of ambient temperature.

Note: Resistance at 20°C of ambient temperature.

Outdoor Unit CU-E9PB4EA

10. Printed Circuit Board

Main Printed Circuit Board

Display Printed Circuit Board

Selecting the Location for the Indoor Unit Provide a check port on the piping side ceiling for repair and maintenance. š Install the indoor unit once the following conditions are satisfied and after receiving the customer approval. 1 The indoor unit must be within a maintenance space. 2 The indoor unit must be free from any obstacles in path of the air inlet and outlet, and must allow spreading of air throughout the room. 3 Recommended installation height for indoor unit shall be at least 2.5 m.

• If the height from the floor to ceiling exceeds three meters, air flow distribution deteriorates and the effect is decreased.

The installation position must be able to support a load four times the indoor unit weight.

The indoor unit must be away from heat and steam sources, but avoid installing it near an entrance. The indoor unit must allow easy draining. The indoor unit must allow easy connection to the outdoor unit. Place the indoor unit according to the height from the ceiling shown in the illustration below. The indoor unit must be from at least 3m away from any noise-generating equipment. The electrical wiring must be shielded with a steel conduit. 10 If the power supply is subject to noise generation, add a suppressor. 11 Do not install the indoor unit in a laundry. Electric shocks may result. Note

Thoroughly study the following installation locations

In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc. In these cases, take the following actions: o Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily steam which should not flow into the suction of the air conditioner. o Make enough distance from the cooking room to install the air conditioner in such place where it may not suck in oily steam.

Avoid installing the air conditioner in such circumstances where cutting oil mist or iron powder exist especially in factories, etc. Avoid places where inflammable gas is generated, flows-in, contaminated, or leaked. Avoid places where sulphurous acid gas or corrosive gas can be generated. Avoid places near high frequency generators.

Installation of Indoor Unit This air conditioner uses a drain up motor. Horizontally install the unit using a level gauge.

CEILING OPENING DIMENSIONS AND HANGING

BOLT LOCATION The paper model for installation expand or shrink according to temperature and humidity. Check on dimensions before using it. During the installation care must be taken Caution not to damage electric wires.

The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions. Be sure to discuss the ceiling drilling work with the workers concerned. POSITIONS OF AIR CONDITIONER BODY AND CEILING SURFACE

Refrigerant Piping Refrigerant is charged to the outdoor unit. For details, see the manual for installation work of outdoor unit. (Additional charging, etc.) 1 Brazing for piping. a. Execute brazing before tightening the flare nut. b. Brazing must be executed while blowing nitrogen gas. (This prevents generation of oxidized scale in copper pipe.) 2 When there is a lot of brazings for long piping, install a strainer midway of the piping. (The strainer is locally supplied.) 3 Use clean copper pipe with inner wall surface free from mist and dust. Blow nitrogen gas or air to blow off dust in the pipe before connection. 4 Form the piping according to its routing. Avoid bending and bending back the same piping point more than three times. (This will result in hardening of the pipe). 5 After deforming the pipe, align centers of the union fitting of the indoor unit and the piping, and tighten them firmly with wrenches. 6 Connect pipe to the service valve or ball valve which is located below the outdoor unit. 7 After completed the piping connection, be sure to check if there is gas leakage in indoor and outdoor connection.

Vacuum drying After completing the piping connection, execute vacuum drying for the connecting piping and the indoor unit. The vacuum drying must be carried out by using the service ports of both the liquid and gas side valves. Use two wrenches and tighten with regular torque. CAUTION ø6.35 mm ø9.52 mm Flare nut fastening torque N•m (kgf•cm) ø12.7 mm 55 (560) ø19.05 mm ø15.88 mm 65 (660) Liquid side piping Gas side piping ø6.35 mm (1/4") ø12.7 mm (1/2")

18 (180) 42 (430) 100 (1020) Indoor Unit Drain Piping During drain piping connection, be careful not to exert extra force on the drain port at the indoor unit. The outside diameter of the drain connection at the indoor unit is 32 mm. Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings.

Be sure to perform heat insulation on the drain piping. Heat insulation material: Polyethylene foam with thickness more than 8 mm (local supply).

Drain piping must have down-slope (1/50 to 1/100); be sure not to provide up-and-down slope to prevent reversal flow. Be sure to check no air trap on drain hose and to ensure smooth water flow and no abnormal sound. Drain Test

The height of drain may be possible up to 750 mm. When drain set piping, install as shown in the figure below. The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain up motor operation. Connect the main drain pipe to exterior and leave it provisionally until the test comes to an end. Feed water to the flexible drain hose and check the piping for leakage. Be sure to check the drain up motor for normal operating and noise when electric wiring is complete. When the test is complete, connect the flexible drain hose to the drain port. Pour about 600-700cc of water in the drain pan of the indoor unit. (Pour from the position specified in the drawing by using a water supply bottle or other suitable tool.) Press the drain pump test run on pcb to start the drain motor, and verify water drainage. (The drain motor will automatically stop after operating for about five minutes.)

Heat Insulation Be sure to perform heat insulation on the drain, liquid and gas piping. Imperfection in heat insulation work leads to water leakage. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Precautions in high humidity circumstance. This air conditioner has been tested according to the “JIS Standard Conditions with Mist” and have been confirmed that there are no faults. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C), water drops are liable to fall. In this case, add heat insulation material according to the following procedure: o Heat insulation material to be prepared… Adiabatic glass wool with thickness 10 to 20 mm. o Stick glass wool on all air conditioners that are located in ceiling atmosphere. o In addition to the normal heat insulation (thickness: more than 8 mm) for refrigerant piping (gas piping: thick piping) and drain piping, add a further of 10 mm to 30 mm thickness material. Wall seal

When the outdoor unit is installed on a higher position than the indoor unit, install the trap so as not to instill rain water into the wall by transmitting in piping. Stuff the space among piping, the electric wire, and- the drain hose with “Putty” and seal the penetration wall hole. Make sure that rain water do not instill into the wall.

Connecting the Cable to the Indoor Remove the mounting screw, remove the control box cover, and then connect the wires by following the procedure given in the illustration. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm2 flexible cord, type designation 60245 IEC 57 or heavier cord. Allowable connection cable length of each indoor unit shall be 30 m or less. Secure the connection cable onto the control board with the holder (clamper). Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor’s respectively. Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason.

Wire Stripping and Connection Requirement Installation of Decorative Panel The decorative panel has its installation direction. Confirm the direction by displaying the piping side.

Remove the air inlet grille by moving the catchers to center.

Fitting the decorative panel o Temporarily secure the fixing screws (3 pcs.) before fitting the decorative panel. (For temporarily securing the front grille.) o Place decorative panel on the screws (3 pcs.) before fitting, move decorative panel as illustrated and tighten all the screws (4 pcs.). Check before hand the height from the ceiling to the unit. The front grille fitting direction is determined by the unit direction. Only use the screws with the length of 35mm which is provided, to fix the decorative panel. Do not use other screw which is longer it may cause damage to the drain-pan and other components.

Fit the decorative panel and ceiling wall together and confirm no gap in between. Readjust indoor unit height, if there is a gap between ceiling wall and decorative panel.

Open the indoor control box cover. (2 pcs) Insert firmly the connector of cosmetic louver to indoor pcb CN-STM1, CN-STM2 and CN-DISP. Be caution not to clamp the cord in between control board and control board cover. After complete, install back removed part follow opposite procedure.

Be sure to hook the air inlet grill string, to prevent grill from falling and causing injury from it.

Select the Best Location

If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed. There should not be any animal or plant which could be affected by hot air discharged. Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles. Do not place any obstacles which may cause a short circuit of the discharged air. If piping length is over the [piping length for additional gas], additional refrigerant should be added as shown in the table. Indoor/Outdoor Installation Diagram Example: For E9***** If the unit is installed at 10 m distance, the quantity of additional refrigerant should be 50 g .... (10-7.5) m x 20 g/m = 50 g.

Install the Outdoor Unit After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 2 When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails. Model

Connecting the Piping to Indoor Unit Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe. (In case of using long piping) Connect the piping š Align the center of piping and sufficiently tighten the flare nut with fingers. š Further tighten the flare nut with torque wrench in specified torque as stated in the table.

Do not overtighten, overtightening may cause gas leakage Piping size

Torque [18 N•m (1.8 kgf.m)] [42 N•m (4.3 kgf.m)] [55 N•m (5.6 kgf.m)] [65 N•m (6.6 kgf.m)] [100 N•m (10.2 kgf.m)] Connecting the Piping to Outdoor Unit Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table.

Connecting the Piping to Outdoor Multi Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table.

• For Gas side piping please refer table and diagram below

• Kindly consult authorised dealer for connectivity validity.

Evacuation of the Equipment WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure.

Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. o Be sure to connect the end of the charging hose with the push pin to the service port.

Connect the center hose of the charging set to a vacuum pump. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes. Note : BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve. Tighten the service port caps of the 3-way valve at a torque of 18 N•m with a torque wrench. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal wrench (4 mm). Mount valve caps onto the 2-way valve and the 3-way valve. o Be sure to check for gas leakage.

If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in the step e above take the following measure: If the leak stops when the piping connections are tightened further, continue working from step e. If the leak does not stop when the connections are retightened, repair location of leak. Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause frostbite. Connect the Cable to the Outdoor Unit (FOR DETAIL REFER TO WIRING DIAGRAM AT UNIT) 1 Remove the control board cover from the unit by loosening the screw. 2 Cable connection to the power supply through Isolating Devices (Disconnecting means). o Connect approved type polychloroprene sheathed power supply cord 3 x

1.5 mm2 type designation 60245 IEC 57

or heavier cord to the terminal board, and connect the others end of the cord to Isolating Devices (Disconnecting means). 3 Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm2 flexible cord, type designation 60245 IEC 57 or heavier cord. Allowable connection cable length of each indoor unit shall be 30 m or less. 4 Connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram below.

Secure the power supply cord and connection cable onto the control board with the holder. Attach the control board cover back to the original position with screw. For wire stripping and connection requirement, refer to instruction 10.1.6 of indoor unit. Pipe Insulation Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above.

Cutting and Flaring the Piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. Please make flare after inserting the flare nut onto the copper pipes. Disposal of Outdoor Unit Drain Water If a drain elbow is used, the unit should be placed on a stand which is taller than 3 cm. If the unit is used in an area where temperature falls below 0°C for 2 or 3 days in succession, it is recommended not to use a drain elbow, for the drain water freezes and the fan will not rotate.

Auto Switch Operation The following operations can be performed by pressing the “AUTO” switch.

1 AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto Switch is pressed.

2 TEST RUN OPERATION (FOR PUMP

DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. to below 8 sec. A “pep” sound will occur at the fifth sec., in order to identify the starting of Test Run operation.

Changing the Remote Control Transmission Code Press AUTO SW continuously for more than 11 sec to below 16 sec, A “pep”, “pep”, “pep” sound will occur at the eleventh sec. Press the “A/C RESET” button once remote control signal will activate the remote control transmission code setting mode. Press “OFF/ON” button. The new Remo-Con No. will be accepted and memorized, after which the new Remo-Con No. can be used.

Remo-Con No. Change in Remote Control 1 Remove the batteries from the battery compartment of the Remote Control. 2 On the left side of the battery compartment, there is a small opening in the centre in which Jumper (J_A) can be seen. In the accepted Remo-Con PCB shown beside, Jumper (J_B) can be seen. J_A J_B Remo-Con No. Short Open A(Default) Open Open

Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air temperature.

Internal Setting Temperature Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes. These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit.

Soft Dry Operation Thermostat control Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.0°C continue for 3 minutes. When compressor is OFF (Thermostat OFF) and AUTO FAN is set, the fan will stop periodically. Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.

Thermostat control Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.5°C continue for 3 minutes. When compressor is OFF (Thermostat OFF) and AUTO FAN is set, the fan will stop periodically. Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point.

Cooling Operation Heating Operation Thermostat control Compressor is OFF when Intake Air Temperature - Internal Setting Temperature > +2.0°C continue for 3 minutes. Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature < Compressor OFF point.

Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature. During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature. Every 10 minutes, the indoor temperature is judged. For the 1st judgment o If indoor intake temperature - remote control setting temperature ≥ 2°C, COOL mode is decided. o If -2°C ≤ indoor intake temperature - remote control setting temperature < 2°C, DRY mode is decided. o If indoor intake temperature - remote control setting temperature < -2°C, HEAT mode is decided. For the 2nd judgment onwards o If indoor intake temperature - remote control setting temperature ≥ 4°C, if previous operate in DRY mode, then continue in DRY mode. otherwise COOL mode is decided. o If -2.5°C ≤ indoor intake temperature - remote control setting temperature < 4°C, maintain with previous mode. o If indoor intake temperature - remote control setting temperature < -2.5°C, HEAT mode is decided.

12.2 Indoor Fan Motor Operation

Basic Rotation Speed (rpm) A. Basic Rotation Speed (rpm)

[Cooling, Dry] š Fan motor’s number of rotation is determined according to remote control setting. Remote control

[Heating] š Fan motor’s number of rotation is determined according to remote control setting. Remote control

ii Auto Fan Speed [Cooling, Dry] š According to room temperature and setting temperature, indoor fan speed is determined automatically. š When set temperature is not achieved, the indoor fan will operate according to pattern below.

When set temperature achieved, the indoor fan speed will be fixed. When thermostat off, the fan stop periodically.

[Heating] š According to indoor pipe temperature, automatic heating fan speed is determined as follows. B. Feedback control š Immediately after the fan motor started, feedback control is performed once every second. š During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue for 10 seconds, then fan motor error counter increase, fan motor is then stop and restart. If the fan motor counter becomes 7 times, then H19 - fan motor error is detected. Operation stops and cannot on back.

12.3 Outdoor Fan Motor Operation

It starts when compressor starts operation and it stops 30 seconds after compressor stops operation.

During cooling operation, and outdoor ambient temperature is below 8°C, outdoor fan speed will be controlled according to outdoor piping temperature as following: OD Pipe Temperature

33°C 33°C During above condition, when indoor heat exchanger temperature is below 5°C, the outdoor fan will stop according to outdoor piping temperature as following:

12.4 Airflow Direction

1. There is one type of airflow, vertical airflow (directed by horizontal vane).

2. Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat

exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).

Vertical Airflow Operation Mode Heating Upper Vane Angle (°) Airflow Direction

Auto with Heat Exchanger

1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated

above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Figure 1 below. When the air conditioner is stopped using remote control, the vane will shift to close position. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, the vane will shift to close position.

12.5 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode)

Purpose o To provide quiet cooling operation compare to normal operation.

Control condition o Quiet operation start condition ƒ When “POWERFUL/QUIET” button at remote control is pressed twice. POWERFUL/QUIET LED illuminates.

Quiet operation stop condition ƒ When one of the following conditions is satisfied, quiet operation stops: š POWERFUL/QUIET button is pressed again. š Stop by OFF/ON switch. š Timer “off” activates. ƒ When quiet operation is stopped, operation is shifted to normal operation with previous setting. ƒ When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. ƒ When operation mode is changed, quiet operation is shifted to quiet operation of the new mode. ƒ During quiet operation, if timer “on” activates, quiet operation maintains. ƒ After off, when on back, quiet operation is not memorised. Control contents o Fan speed is changed from normal setting to quiet setting of respective fan speed. Fan speed for quiet operation is reduced from setting fan speed.

12.6 Quiet Operation (Heating)

Purpose o To provide quiet heating operation compare to normal operation.

Control condition o Quiet operation start condition ƒ When “POWERFUL/QUIET” button at remote control is pressed. POWERFUL/QUIET LED illuminates.

Quiet operation stop condition ƒ When one of the following conditions is satisfied, quiet operation stops: š POWERFUL/QUIET button is pressed again. š Stop by OFF/ON switch. š Timer “off” activates. ƒ When quiet operation is stopped, operation is shifted to normal operation with previous setting. ƒ When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. ƒ When operation mode is changed, quiet operation is shifted to quiet operation of the new mode, except fan mode only. ƒ During quiet operation, if timer “on” activates, quiet operation maintains. ƒ After off, when on back, quiet operation is not memorised. Control contents o Fan speed manual ƒ Fan speed is changed from normal setting to quiet setting of respective fan speed. ƒ Fan speed for quiet operation is reduced from setting fan speed. o Fan Speed Auto ƒ Indoor FM RPM depends on pipe temp sensor of indoor heat exchanger.

12.7 Powerful Mode Operation

When the powerful mode is selected, the internal setting temperature will shift lower up to 2°C (for Cooling/Soft Dry) or higher up to 3.5°C (for Heating) than remote control setting temperature for 20 minutes to achieve the setting temperature quickly.

There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time. If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence.

ON Timer Control ON timer 1 and ON timer 2 can be set using remote control, the unit with timer set will start operate earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time. 60 minutes before the set time, indoor (at fan speed of Lo-) and outdoor fan motor start operate for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time. From the above judgment, the decided operation will start operate earlier than the set time as shown below.

OFF Timer Control OFF timer 1 and OFF timer 2 can be set using remote control, the unit with timer set will stop operate at set time.

When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected randomly) after power supply resumes. This type of control is not applicable during ON/OFF Timer setting. This control can be omitted by open the circuit of JP3 at indoor unit printed circuit board.

12.10 Indication Panel

Note: š If POWER LED is blinking, the possible operation of the unit are Hot Start, during Deice operation, operation mode judgment, or ON timer sampling. š If Timer LED is blinking, there is an abnormality operation occurs.

12.11 Drain Pump Control Operation

Drain pump control š This unit has built-in with drain pump. Control content š During COOL/DRY mode. o During COOL/DRY mode, drain pump starts 10 seconds after indoor fan motor starts. o The drain pump is always ON.

After COOL/DRY mode, when unit turns OFF (power standby) or changes to HEAT mode. o The drain pump turns ON for 90 seconds immediately.

Error judgment o When float switch detects ON signal continuously for 2 minutes 30 seconds, error code H21 are shown. o When float switch ON has operated 2 times within 20 minutes, error code H35 are shown.

Restart Control (Time Delay Safety Control) The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. This control is not applicable if the power supply is cut off and on again. This phenomenon is to balance the pressure inside the refrigerant cycle.

Total Running Current When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased. If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes. Model Operation Mode Cooling / Soft Dry (A) Cooling / Soft Dry (B/C) Heating

E12PB4EA X (A) Y (A)

The first 30 minutes of cooling operation, (A) will be applied. IPM (Power transistor) Prevention Control

Overheating Prevention Control 1 When the IPM temperature rises to 120°C, compressor operation will stop immediately. 2 Compressor operation restarts after 3 minutes the temperature decreases to 110°C. 3 If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96” is indicated).

DC Peak Current Control 1 When electric current to IPM exceeds set value of 20.23 (E9), 30.0 (E12) ± 5.0A, the compressor will stop operate. Then, operation will restart after 3 minutes. 2 If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after 1 minute. 3 If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after 1 minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer LED will be blinking (“F99” is indicated).

Instructed frequency for compressor operation will be regulated by compressor top temperature. The changes of frequency are as below. If compressor top temperature exceeds 107°C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking. (“F97” is indicated.)

Low Frequency Protection Control 1 When the compressor operate at frequency lower than 24 Hz continued for 20 minutes, the operation frequency will be changed to 23 Hz for 2 minutes.

Low Pressure Prevention Control (Gas Leakage Detection) Control start conditions o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.75A and 0.95A. o During Cooling and Soft Dry operations: Indoor suction temperature - indoor piping temperature is below 4°C. o During Heating operations : Indoor piping temperature - indoor suction is under 5°C. Control contents o Compressor stops (and restart after 3 minutes). o If the conditions above happen 2 times within 20 minutes, the unit will: ƒ Stop operation ƒ Timer LED blinks and “F91” indicated.

Compressor Overheating Prevention Control Low Frequency Protection Control 2 When all the below conditions comply, the compressor frequency will change to lower frequency. Temperature, T, for: Indoor intake air (°C) Outdoor air (°C) Indoor heat exchanger (°C) Cooling/Soft Dry T < 14 or T ≥ 30 T < 13 or T ≥ 38 T < 30

13.2 Protection Control For Cooling & Soft Dry Operation

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. Compressor frequency will adjust base on outdoor air temperature.

Freeze Prevention Control 2 Control start conditions o During Cooling operation and soft dry operation ƒ During thermo OFF condition, indoor intake temperature is less than 10°C or ƒ Compressor stops for freeze prevention control o Either one of the conditions above occurs 5 times in 40 minutes. Control contents o Operation stops o Timer LED blinks and “H99” indicated

Freeze Prevention Control 1 When indoor heat exchanger temperature is lower than 0°C continuously for 6 minutes, compressor will stop operating. Compressor will resume its operation after stop for 3 minutes and the indoor heat exchanger is higher than 5°C. At the same time, indoor fan speed will be higher than during its normal operation. If indoor heat exchanger temperature is higher than 13°C, the fan speed will return to its normal operation.

Cooling Overload Control Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency). The compressor stop if outdoor pipe temperature exceeds 63°C. If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95 indicated: outdoor high pressure rise protection).

Outdoor Air Temperature Control Dew Prevention Control 1 To prevent dew formation at indoor unit discharge area. This control will be activated if: o Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. o When Cooling or Dry mode is operated more than 20 minutes or more. This control stopped if: o Compressor stopped. o Remote control setting changed (fan speed / temperature). o Outdoor air temperature and indoor intake temperature changed. Fan speed will be adjusted accordingly in this control.

Odor Cut Control To reduce the odor released from the unit. o Start Condition ƒ AUTO FAN Speed is selected during COOL or DRY operation. ƒ During freeze prevention control and timer preliminary operation, this control is not applicable. o Control content ƒ Depends on compressor conditions:

1. Compressor OFF → Compressor ON.

The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds.

2. Compressor ON → Compressor OFF.

The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds.

13.3 Protection Control For Heating Operation

Intake Air Temperature Control Compressor will operate at limited freq., if indoor intake air temperature is 30°C or above.

The Max current value is regulated when the outdoor air temperature rise above 14°C in order to avoid compressor overloading.

Cold Draught Prevention Control When indoor pipe temperature is low, cold draught operation starts where indoor fan speed will be reduced.

Low Temperature Compressor Oil Return Control In heating operation, if the outdoor temperature falls below -10°C when compressor starts, the compressor frequency will be regulated up to 600 seconds.

Overload Protection Control The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown below. If the heat exchanger temperature exceeds 60°C, compressor will stop.

Outdoor Air Temperature Control Deice Operation When outdoor pipe temperature and outdoor air temperature is low, deice operation start where indoor fan motor and outdoor fan motor stop and operation LED blinks.

The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.

TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A “beep” sound will heard at the fifth seconds, in order to identify the starting of Test Run operation (Forced cooling operation). Within 5 minutes after Forced cooling operation start, the Auto OFF/ON button is pressed for more than 5 seconds. A 2 “beep” sounds will heard at the fifth seconds, in order to identify the starting of Normal cooling operation. Within 5 minutes after Normal cooling operation start, the Auto OFF/ON button is pressed for more than 5 seconds. A 3 “beep” sounds will be heard at the fifth seconds, in order to identify the starting of Forced heating operation. The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air conditioner operation.

The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition) and press “AC RESET” button and then press any button at remote control to transmit and store the desired transmission code to the EEPROM. There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor unit. The indoor unit will only operate when received signal with same transmission code from remote control. This could prevent signal interference when there are 2 or more indoor units installed nearby together. To change remote control transmission code, short or open jumpers at the remote control printed circuit board. Remote Control Printed Circuit Board

Jumper A (J_A) Jumper B (JB) Remote Control No. Short Open A (Default) Open Open

During Remote Control Number Switch Mode, press any button at remote control to transmit and store the transmission code to the EEPROM.

REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the Remote Control Receiving Sound Off/On Mode is in standby condition) and press “AC Reset” button at remote control. Press “Auto OFF/ON button” to toggle remote control receiving sound. o Short “beep”: Turn OFF remote control receiving sound. o Long “beep”: Turn ON remote control receiving sound. After Auto OFF/ON Button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON Mode is restarted.

To check remote control transmission code and store the transmission code to EEPROM: o Press “Set” button continuously for 10 seconds by using pointer. o Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code changed.

TIMER ▲ To change indoor unit indicator’s LED intensity. o Press continuously for 5 seconds.

RESET (AC) To restore the unit’s setting to factory default. o Press once to restore the unit’s setting.

RESET (RC) To clear and restore the remote control setting to factory default. o Press once to clear the memory.

14.3 Outdoor PCB Test Run Operation (For Pump Down/Servicing Purpose)

The Test Run operation will be activated by short-circuiting CN-S (Pin 1 and 2) at outdoor unit PCB after power supplied to outdoor unit terminal 1 and 2. The unit forced to run rated frequency cooling operation mode.

In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table on the right. Normal Pressure and Outlet Air Temperature (Standard) Outlet air Gas Pressure Temperature MPa (°C) (kg/cm G) Cooling Mode

12 ~ 16 Heating Mode 2.3 ~ 2.9 (23 ~ 29) 36 ~ 45 *Condition: • Indoor fan speed = High

• Outdoor temperature 35°C at the cooling mode and 7°C at the heating mode
• Compressor operates at rated frequency

Relationship between the condition of the air conditioner and pressure and electric current Condition of the air conditioner Cooling Mode Heating Mode Low Pressure High Pressure Electric current during operation Low Pressure High Pressure Electric current during operation Insufficient refrigerant (gas leakage)

Clogged capillary tube or Strainer

Short circuit in the indoor unit

Heat radiation deficiency of the outdoor unit

• Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is started.

Once abnormality has occurred during operation, the unit will stop its operation, and Timer LED blinks. Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will light up again. In operation after breakdown repair, the Timer LED will no more blink. The last error code (abnormality) will be stored in IC memory.

Timer LED start to blink and the unit automatically stops the operation. Press the CHECK button on the remote controller continuously for 5 seconds. “- -” will be displayed on the remote controller display. Note: Display only for “- -”. (No transmitting signal, no receiving sound and no Power LED blinking.) Press the “TIMER” ▲ or ▼ button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will be transmitted to the main unit. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main unit. When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED will light up for 0.5 seconds and no sound will be heard. The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds. The LED will be off if the unit is turned off or the RESET button on the main unit is pressed.

To Display Memorized Error Code (Protective Operation) Turn power on. Press the CHECK button on the remote controller continuously for 5 seconds. “- -” will be displayed on the remote controller display. Note: Display only for “- -”. (No transmitting signal, no receiving sound and no Power LED blinking.) Press the “TIMER” ▲ or ▼ button on the remote controller. The code “H00” (no abnormality) will be displayed and signal will be transmitted to the main unit. The power LED lights up. If no abnormality is stored in the memory, three beeps sound will be heard. Every press of the button (up or down) will increase abnormality numbers and transmit abnormality code signal to the main unit.

When the latest abnormality code on the main unit and code transmitted from the remote controller are matched, power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, power LED will light up for 0.5 seconds and no sound will be heard. The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds. The same diagnosis can be repeated by turning power on again. To Clear Memorized Error Code after Repair (Protective Operation) Turn power on (in standby condition). Press the AUTO button for 5 seconds (A beep receiving sound) on the main unit to operate the unit at Forced Cooling Operation modes. Press the CHECK button on the remote controller for about 1 second with a pointed object to transmit signal to main unit. A beep sound is heard from main unit and the data is cleared. Temporary Operation (Depending On Breakdown Status) Press the AUTO button (A beep receiving sound) on the main unit to operate the unit. (Remote control will become possible.) The unit can temporarily be used until repaired.

15.3 Error Codes Table

Diagnosis display Abnormality / Protection control Abnormality Judgment Protection Operation Problem Check location H00 No memory of failure

Indoor fan only operation can start by entering into force cooling operation Indoor/outdoor communication not establish š Indoor/outdoor wire terminal š Indoor/outdoor PCB š Indoor/outdoor connection wire Total indoor capability more than maximum limit or less than minimum limit, or number of indoor unit less than two Indoor intake air temperature sensor open or short circuit š Indoor/outdoor connection wire š Indoor/outdoor PCB š Specification and combination table in catalogue H11 Indoor/outdoor abnormal communication After operation for 1 minute H12 Indoor unit capacity unmatched 90s after power supply

Compressor temperature š Compressor temperature sensor open or short circuit sensor lead wire and connector

Current transformer faulty or compressor faulty š Outdoor PCB faulty or compressor faulty Continuous happen for 7 times

Indoor fan motor lock or feedback abnormal š Fan motor lead wire and connector š Fan motor lock or block H14 H15 H16 H19 H21 H23 H24 H27 H28 H30 H33 H35 H38 Indoor intake air temperature sensor abnormality Compressor temperature sensor abnormality Outdoor current transformer (CT) abnormality Indoor fan motor mechanism lock Indoor float switch operation abnormal Indoor heat exchanger temperature sensor abnormality Indoor heat exchanger temperature sensor 2 abnormality Outdoor air temperature sensor abnormality Outdoor heat exchanger temperature sensor 1 abnormality Outdoor discharge pipe temperature sensor abnormality Indoor / outdoor misconnection abnormality Indoor drain water adverse current abnormal Indoor/Outdoor mismatch (brand code)

š Indoor intake air temperature sensor lead wire and connector

Indoor heat exchanger temperature sensor open or short circuit š Indoor heat exchanger temperature sensor lead wire and connector Continuous for 5s

Indoor heat exchanger temperature sensor 2 open or short circuit š Indoor heat exchanger temperature sensor 2 lead wire and connector Continuous for 5s

Outdoor air temperature š Outdoor air temperature sensor sensor open or short circuit lead wire and connector Continuous for 5s

Outdoor heat exchanger temperature sensor 1 open or short circuit š Outdoor heat exchanger temperature sensor 1 lead wire and connector Continuous for 5s

Outdoor discharge pipe temperature sensor open or short circuit š Outdoor discharge pipe temperature sensor lead wire and connector

Indoor and outdoor rated voltage different š Indoor and outdoor units check

š Check indoor unit and outdoor unit š Outdoor fan motor lead wire and connector š Fan motor lock or block š Check indoor heat exchanger š Air filter dirty š Air circulation short circuit š Check indoor heat exchanger š Air filter dirty š Air circulation short circuit H97 Outdoor fan motor mechanism lock H98 Indoor high pressure protection

Indoor high pressure protection (Heating) H99 Indoor operating unit freeze protection

Indoor freeze protection (Cooling) 4 times happen within 30 minutes

4-way valve switching abnormal š 4-way valve š Lead wire and connector 4 times happen within 10 minutes

Power factor correction circuit abnormal š Outdoor PCB faulty Refrigeration cycle abnormal Compressor abnormal revolution š Insufficient refrigerant or valve close š Power transistor module faulty or compressor lock F11 F90 F91 F93 4-way valve switching abnormality Power factor correction (PFC) circuit protection Refrigeration cycle abnormality Compressor abnormal revolution 2 times happen within 30 minutes

2 times happen within 20 minutes 4 times happen within 20 minutes

Diagnosis display Abnormality / Protection control Outdoor cooling high pressure protection Power transistor module overheating protection Compressor overheating protection Abnormality Judgment 4 times happen within 20 minutes F98 F99 F95 F96 F97 Protection Operation Problem Check location

Cooling high pressure protection š Check refrigeration system š Outdoor air circuit 4 times happen within 30 minutes

Power transistor module overheat š PCB faulty š Outdoor air circuit (fan motor) 3 times happen within 30 minutes

Compressor overheat š Insufficient refrigerant Total running current protection 3 times happen within 20 minutes

Total current protection š Check refrigeration system š Power source or compressor lock Outdoor direct current (DC) peak detection Continuous happen for 7 times

15.4 Self-diagnosis Method

H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions š During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused š Faulty indoor unit PCB. š Faulty outdoor unit PCB. š Indoor unit-outdoor unit signal transmission error due to wiring error. š Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units. Troubleshooting

H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions š During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused š Wrong models interconnected. š Wrong indoor unit or outdoor unit PCBs mounted. š Indoor unit or outdoor unit PCBs defective. š Indoor-outdoor unit signal transmission error due to wrong wiring. š Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units. Troubleshooting

H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

H16 (Outdoor Current Transformer) Malfunction Decision Conditions š An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused š Lack of gas š Broken CT (current transformer) š Broken Outdoor PCB Troubleshooting

H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions š The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused š Operation stops due to short circuit inside the fan motor winding. š Operation stops due to breaking of wire inside the fan motor. š Operation stops due to breaking of fan motor lead wires. š Operation stops due to Hall IC malfunction. š Operation error due to faulty indoor unit PCB. Troubleshooting

H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

H24 (Indoor Pipe Temperature Sensor 2 Abnormality) Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor 2 are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

15.4.10 H28 (Outdoor Pipe Temperature Sensor Abnormality)

Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

Malfunction Decision Conditions š During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused š Faulty connector connection. š Faulty sensor. š Faulty PCB. Troubleshooting

15.4.12 H33 (Unspecified Voltage between Indoor and Outdoor)

Malfunction Decision Conditions š The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused š Wrong models interconnected. š Wrong indoor unit and outdoor unit PCBs used. š Indoor unit or outdoor unit PCB defective. Troubleshooting

Malfunction Decision Conditions š The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused š Operation stops due to short circuit inside the fan motor winding. š Operation stops due to breaking of wire inside the fan motor. š Operation stops due to breaking of fan motor lead wires. š Operation stops due to Hall IC malfunction. š Operation error due to faulty outdoor unit PCB. Troubleshooting

15.4.14 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED

flashing) Malfunction Decision Conditions š Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. š Phenomena: unit is stopping and re-starting very often in heating mode. Malfunction Caused š Indoor heat exchanger thermistor š Clogged air filter or heat exchanger š Over-bent pipe (liquid side) Troubleshooting

Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions š Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused š Air short circuit at indoor unit š Clogged indoor unit air filter š Dust accumulation on the indoor unit heat exchanger š 2/3 way valve closed š Faulty indoor unit fan motor š Refrigerant shortage (refrigerant leakage) š Clogged expansion valve or strainer š Faulty indoor pipe temperature sensor š Faulty indoor unit PCB Troubleshooting

Malfunction Decision Conditions š When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused š Indoor heat exchanger (pipe) thermistor š 4-way valve malfunction Troubleshooting

• Check gas side pipe – for hot gas flow in cooling mode

Malfunction Decision Conditions š To maintain DC voltage level supply to power transistor. š To detect high DC voltage level after rectification. Malfunction Caused š During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors. š When DC voltage detected is LOW, transistor switching will turn ON by controller to push-up the DC level. š When DC voltage detected is HIGH (391Vdc – 425Vdc), active LOW signal will send by the controller to turn OFF relay RY-C. Troubleshooting

15.4.18 F91 (Refrigeration Cycle Abnormality)

Malfunction Decision Conditions š The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused š Lack of gas. š 3-way valve close. Troubleshooting

Malfunction Decision Conditions š A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused š Compressor terminal disconnect š Faulty Outdoor PCB š Faulty compressor Troubleshooting

Malfunction Decision Conditions š During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused š Outdoor heat exchanger temperature rise due to short-circuit of hot discharge air flow. š Outdoor heat exchanger temperature rise due to defective of outdoor fan motor. š Outdoor heat exchange temperature rise due to defective outdoor heat exchanger thermistor. š Outdoor heat exchanger temperature rise due to defective of outdoor unit PCB. Troubleshooting

15.4.21 F96 (IPM Overheating)

Malfunction Decision Conditions š During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Multi Models only o Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. o Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor. Malfunction Caused š IPM overheats due to short circuit of hot discharge air flow. š IPM overheats due to defective of outdoor fan motor. š IPM overheats due to defective of internal circuitry of IPM. š IPM overheats due to defective IPM temperature sensor. Multi Models Only o Compressor OL connector poor contact. o Compressor OL faulty. Troubleshooting

Malfunction Decision Conditions š During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused š Faulty compressor tank temperature sensor š 2/3 way valve closed š Refrigerant shortage (refrigerant leakage) š Faulty outdoor unit PCB š Faulty compressor Troubleshooting

Malfunction Decision Conditions š During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running. Malfunction Caused š Excessive refrigerant. š Faulty outdoor unit PCB. Troubleshooting

Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused š DC current peak due to compressor failure. š DC current peak due to defective power transistor(s). š DC current peak due to defective outdoor unit PCB. š DC current peak due to short circuit. Troubleshooting

16. Disassembly and Assembly Instructions

WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks.

16.1 Disassembly of Parts

Open the Intake Grille from the Front Grille by moving the catchers to center (Fig.1). Fig. 1

Remove the Control Board Cover by removing the screws (Fig. 2). Fig. 2

Release the (Fig. 3): o CN-STM1 (WHT) connector. o CN-STM2 (YLW) connector. o CN-DISP (WHT) connector. o CN-FM (WHT) connector. o CN-TH1 (WHT) connector. o CN-TH2 (BLU) connector. o CN-DRMTR1 (BLU) connector. o AC01 (BLK), AC02 (WHT) and CN-DRMTR2 (RED) from Terminal Board. o G01 (GRN) screw. o Two T-BLK connectors. o CN-T1 (WHT). o CN-T2 (YLW). Fig. 3

To remove the Electronic Controller, release the 6 hooks that hold it to the Control Board (Fig. 4). Fig. 4

Remove the Front Grille by removing the screw A and screws B, C & D half way open (Fig. 5). Fig. 5

Remove the Air Guider and Drain Pan complete by removing the screws (Fig. 6). Fig. 6

Remove the Turbo Fan by removing the bolt (Fig. 7). Fig. 7

Remove the Fan Motor by release the Fan Motor lead wire connectors and Fan Motor screws (Fig. 8). Fig. 8

16.2 Outdoor Electronic Controller Removal Procedure

CU-E9PB4EA Caution! When handling electronic controller, be careful of electrostatic discharge.

Remove the 5 screws of the Top Panel.

Remove the Control Board as follows: Fig. 1 Fig. 4

Remove the 8 screws of the Front Panel. Fig. 2

Remove the screw of the Terminal Board Cover. Remove the Top Cover of the Control Board by 4 hooks. Fig. 5 Fig. 6 Fig. 3

CU-E12PB4EA Remove the 4 screws of the Top Panel.

Remove the Control Board. Fig. 4 Fig. 1

Remove the 10 screws of the Front Panel. Fig. 5 Fig. 2

Remove the 8 screws of the Electronic Controller. Remove the Top Cover of the Electronic Controller. Caution! When handling electronic controller, be careful of electrostatic discharge. Fig. 3

Service data provided are based on the air conditioner running under rated frequency during forced cooling / forced heating mode.

17.1 Cool Mode Outdoor Air Temperature Characteristic

Condition š Indoor room temperature: 27°C DryBulb/19°C Wet Bulb š Unit setting: Standard piping length, forced cooling at 16°C, Hi fan š Compressor frequency: Rated for cooling operation š Voltage: 220V/230V CS-E9PB4EA CU-E9PB4EA 230V 220V

17.2 Heat Mode Outdoor Air Temperature Characteristic

Condition š Indoor room temperature: 20°C DryBulb/ -°C Wet Bulb š Unit setting: Standard piping length, forced heating at 30°C, Hi fan š Compressor frequency: Rated for Heating operation š Voltage: 220V/230V CS-E9PB4EA CU-E9PB4EA 220V 230V Outlet Air (°C)

17.3 Piping Length Correction Factor

The characteristic of the unit has to be corrected in accordance with the piping length.

Range of additional refrigerant charge

Piping length (m) Heating Capacity Capacity correction factor

Range of additional refrigerant charge

Piping length (m) Note: The graphs show the factor after added right amount of additional refrigerant.

Range of additional refrigerant charge

Piping length (m) Heating Capacity Capacity correction factor

Range of additional refrigerant charge

Piping length (m) Note: The graphs show the factor after added right amount of additional refrigerant.

18. Exploded View and Replacement Parts List

Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.

LEAD WIRE - FAN MOTOR

TERMINAL BOARD ASS'Y

LEADWIRE-AIR TEMP. SENSOR

(Note) š All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). š “O” marked parts are recommended to be kept in stock.

18.2 CZ-BT20E (Front Grille Complete)

Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.

CWD001142 (Note) š All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). š “O” marked parts are recommended to be kept in stock.

CU-E9PB4EA Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.

SCREW - FAN MOTOR MOUNT

NUT - COMPRESSOR MOUNT

V-COIL COMPLETE (4-WAY VALVE)

V-COIL COMPLETE (EXP.VALVE)

CWH321096 (NOTE) š All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). š “O” marked parts are recommended to be kept in stock.

CU-E12PB4EA Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.

NUT - COMPRESSOR MOUNT

SCREW - FAN MOTOR MOUNT

V-COIL COMPLETE (4-WAY VALVE)

V-COIL COMPLETE (EXP.VALVE)

SENSOR - COMPLETE (AIR TEMP AND PIPE TEMP)

CWH32143 REMARK (NOTE) š All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). š “O” marked parts are recommended to be kept in stock. Printed in Malaysia FY0513-0