4U26HS1ERA - Air Conditioning HAIER - Free user manual and instructions

Brand	Haier
Model	4U26HS1ERA
Product type	Multi-split air conditioning (multiple indoor units)
Refrigerant	R410A (GWP 1975)
Power supply	1 phase, 220-230 V, 50/60 Hz
Fuse	T3.15A / T16A 250VAC (depending on model)
Max. pipe length per indoor unit	25 m
Max. total pipe length	70 m
Standard liquid pipe length	40 m
Pipe diameters (liquid/gas)	6.35 mm (1/4") / 9.52 mm (3/8") or 12.7 mm (1/2")
Main functions	Cooling, heating, silent mode (DIP SW5-8)
Wiring error control	Automatic via DIP SW and LED display
Sensors	Ambient temperature, suction, discharge, pipes, defrost, condensation
Safety	High/low pressure protection, overcurrent, overheating, pressure switches
Supplied accessories	Drain elbow, rubber damper, cap, adapters (3/8→1/2, 1/2→3/8)
Maintenance and cleaning	Keep the area around the outdoor unit clean, avoid obstructions
Repairability	Spare parts available: sensors, modules, valves, fan motors
CE compliance	Directives 73/23/EEC, 2006/95/EC, 89/336/EEC, 2004/108/EC, RoHS, WEEE

Frequently Asked Questions - 4U26HS1ERA HAIER

What type of refrigerant does the Haier 4U26HS1ERA use?

The model uses R410A refrigerant, with a global warming potential (GWP) of 1975. It is a fluorinated greenhouse gas covered by the Kyoto Protocol.

What is the maximum refrigerant pipe length?

Each indoor unit can be connected with a pipe of maximum length 25 m. The total cumulative length of all pipes must not exceed 70 m.

How to install the outdoor unit in case of snow?

In regions with heavy snowfall, choose a location where snow does not affect the unit. It is recommended to install a baffle on the air discharge side and avoid exposing the intake to the wind.

How to perform electrical wiring?

Wiring must be carried out by a qualified electrician, in compliance with national standards. Use a dedicated circuit with earth leakage circuit breaker. Cables must be copper and power supply 1 phase 220-230 V 50/60 Hz.

What to do in case of an error code on the display?

The digital display shows a flashing code. For example, '32' indicates a fault of the gas pipe temperature sensor of indoor unit A. Consult the code table in the manual to identify the fault.

How to activate silent mode?

Set the DIP switch SW5-8 to ON. This reduces operating noise, but the maximum capacity is slightly reduced. Do not modify the other switches.

What are the safety precautions for installation?

Installation must be done by a professional. Ensure the base is solid, wiring is correct, and there is no gas leak. In case of refrigerant leak, ventilate the room.

How to maintain the outdoor unit?

Keep the area around the unit clean to prevent small animals from coming into contact with electrical parts. Regularly check for obstacles at the air inlet and outlet.

Can I connect multiple indoor units?

Yes, this multi-split model can supply up to 5 indoor units. Follow the stop valve priority table for better oil return.

How to check the refrigerant level?

Use a pressure gauge to check the pressure. The system must be charged with R410A only. Add 20g of refrigerant per additional meter beyond the standard length (40 m).

USER MANUAL 4U26HS1ERA HAIER

• Please read this manual carefully before installation.
• Keep this operation manual for future reference.

No.0150508607 C

3U19FS1ERA

4U25HS1ERA

4U30HS1ERA

5U34HS1ERA

Contents

Safety Precautions 3

4

Precautions for Selecting the

Location 4

Installation drawings of indoor and

outdoor units 5

Precautions on Installation 7

Outdoor Unit Installation Guideline 7

Limitations on the installation 7

Refrigerant piping work 7

Pump Down Operation 12

Wiring work 12

Test running 14

Trouble shooting 15

• Please read this manual carefully before installation.

Keep this operation manual for future reference.

EUROPEAN REGULATIONS CONFORMITY FOR THE MODELS

CE

All the products are in conformity with the following European provision:

• Low Voltage Directive 73/23/EEC
• Low Voltage Directive 2006/95/EC
  -Electromagnetic CompatibilityY 89/336/EEC
  -Electromagnetic CompatibilityY 2004/108/EC

ROHS

The products are fulfilled with the requirements in the directive 2002/95/EEC of the European parliament and of council on the Restriction of the use of Certain Hazardous Substances in Electrical and Electronic Equipment (EU RoHS Directive)

WEEE

In accordance with the directive 2002/96/CE of the European parliament, herewith we inform the consumer about the disposal requirements of the electrical and electronic products.

DISPOSAL REQUIREMENTS:

Your air conditioning product is marked with this symbol. This means that electrical and electronic products shall not be mixed with unsorted household waste. Do not try to dismantle the system yourself: the dismantling of the air

conditioning system, treatment of the refrigerant, of oil and of other part must be done by a qualified installer in accordance with relevant local and national legislation. Air conditioners must be treated at a specialized treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. Please contact the installer or local authority for more information. Battery must be removed from the remote controller and disposed of separately in accordance with relevant local and national legislation.

IMPORTANT INFORMATION REGARDSING THE REFRIGERANT USED

This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not vent into the atmosphere.

Refrigerant type:R410A

GWP* value:1975

GWP=global warming potential

Please fill in with indelible ink,

• 1 the factory refrigerant charge of the product

• 2 the additional refrigerant amount charged in the field and

• 1 + 2 the total refrigerant charge

on the refrigerant charge label supplied with the product.

The filled out label must be adhered in the proximity of the product charging port (e.g. onto the inside of the stop value cover).

A contains fluorinated greenhouse gases covered by the Kyoto Protocol
B factory refrigerant charge of the product: see unit name plate
C additional refrigerant amount charged in the field
D total refrigerant charge
E outdoor unit
F refrigerant cylinder and manifold for charging

Safety Precautions

• Read these Safety Precautions carefully to ensure correct installation.
• This manual classifies the precautions into WARNING and CAUTION.
• Be sure to follow all the precautions below: they are all important for ensuring safety.

WARNING Failure to follow any of WARING is likely to result in such grave consequences as death or serious injury.

CAUTION Failure to follow any of CAUTION may in some cases result in grave consequences.

• The following safety symbols are used throughout this manual:

Be sure to observe this instruction Be able to establish an earth connection Never attempt

• After completing installation, test the unit to check for installation errors. Give the user adequate instructions concerning the use and cleaning of the unit according to the Operation Manual.

WARNING

• Installation should be left to the dealer or another professional. Improper installation may cause water leakage, electrical shock, or fire.

• Install the air conditioner according to the instructions given in this manual. Incomplete installation may cause water leakage, electrical shock, or fire.

• Be sure to use the supplied or specified installation parts. Use of other parts may cause the unit to cometo lose, water leakage, electrical shock, or fire.

• Install the air conditioner on a solid base that can support the unit's weight. An inadequate base or incomplete installation may cause injury in the event the unit falls off the base.

• Electrical work should be carried out in accordance with the installation manual and the national electrical wiring rules or code of practice. Insufficient capacity or incomplete electrical work may cause electrical shock or fire.

• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.

• For wiring, use a cable long enough to cover the entire distance with no connection. Do not use an extension cord. Do not put other loads on the power supply, use a dedicated power circuit. (Failure to do so may cause abnormal heat, electric shock or fire.)

• Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the interconnection wires so their terminals terminals receive no external stresses. Incomplete connections or clamping may cause terminal overheating or fire.

• After connectiong interconnecting and supply wiring be sure to shape the cables so that they do not put undue force on the electrical covers or panels. Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock, or fire.

• If any refrigerant has leaked out during the installation work, ventilate the room. (The refrigerant produces a toxic gas if exposed to flames.)

• After all installation is complete, check to make sure that no refrigerant is leaking out. (The refrigerant produces a toxic gas if exposed to flames.)

• When installing or relocating the system, be sure to keep the refrigerant circuit free from substances other than the specified refrigerant(R410A), such as air. (Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture, resulting in injury.)

• During pump-down, stop the compressor before removing the refrigerant piping. If the compressor is still running and the stop valve is open during pump-down, air will be sucked in when the rcompressor is run, causing abnormal pressure in the freezer cycle which will lead to breakage and even injury.

• Be sure to establish an earth. Do not earth the unit to a utility pipe, arrester, or telephone earth. In complete earth may cause electrical shock, or fire. A high surge current from lightning or other sources may cause damage to the air conditioner.

• Be sure to install an earth leakage breaker. Failure to install an earth leakage breaker may result in electric shocks, or fire.

CAUTION

Do not install the aire conditioner in a place where there is danger of exposure to inflammable gas leakage. If the gas leaks and builds up around the unit, it may catch fire.

Establish drain piping according to the instructions of this manual. Inadequate piping may cause flooding.

Tighten the flare nut according to the specified method such as with a torque wrench. If the flare nut is tightened too hard, the falre nut may crack after a long time and cause refrigerant leakage.

Make sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals. Small animals making contact with electrical parts can cause malfunctions, smoke or fire. Please instruct the customer to keep the area around the unit clean.

Accessories supplied with the outdoor unit:

No.	Drawing	Name of parts	Quantity	Note
1		Drainage elbow	1	3U19FS1ERA
			3	4U25HS1ERA 5U34HS1ERA 4U30HS1ERA
2		Rubber cushion	4	3U19FS1ERA 4U30HS1ERA 4U25HS1ERA 5U34HS1ERA
3		Clap	1	3U19FS1ERA
			3	4U25HS1ERA 5U34HS1ERA 4U30HS1ERA
4		Adaptor(3/8→1/2)	1	3U19FS1ERA 4U30HS1ERA 4U25HS1ERA 5U34HS1ERA
5		Adaptor(1/2→3/8)	1	4U25HS1ERA 5U34HS1ERA 4U30HS1ERA

Precautions for Selecting the Location

1) Choose a place solid enough to bear the weight and vibration of the unit, where the operation noise will not be amplified.
2) Choose a location where the hot aire discharged from the unit or the operation noise, will not cause a nuisance to the neighbors of the user.
3) Avoid places near a bedroom and the like, so that the operation noise will cause no trouble.
4) There must be sufficient space for carrying the unit into and out of the site.
5) There must be sufficient space for air passage and no obstructions around the air inlet and the air outlet.
6) The site must be free from the possibility of flammable gas leakage in a nearby place.

Locate the unit so that the noise and the discharged hot air will not annoy the neighbors.

7) Install units, power cords and inter-unit cables at least 3 meter away from television and radio sets. This is to prevent interference to images and sounds. (Noises may be heard even if they are more than 3 meter away depending on radio wave conditions.)
8) In coastal areas or other places with salty atmosphere of sulfate gas, corrosion may shorten the life of the air conditioner.
9)Since drain flows out of the outdoor unit, do not place under the unit anything which must be kept away from moisture.

NOTE:

Cannot be installed hanging from ceiling or stacked.

CAUTION

When operationg the air conditioner in a low outdoor ambient temperature, be sure to follow the instructions described below.

1) To prevent exposure to wind, install the outdoor unit with its suction side facing the wall.
2) Never install the outdoor unit at a site where the suction side may be exposed directly to wind.
3) To prevent exposure to wind, it is recommended to install a baffle plate on the air discharge side of the outdoor unit.
4) In heavy snowfall areas, select an installation site where the snow will not affect the unit.

Installation drawings of indoor and outdoor units

1. Do not connected the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in order to add another indoor unit later. Make sure no dirt or mositure gets into eigher side of the embedded branch piping.
   2.It is impossible to connect the indoor unit for one room only.

If there is the danger of the unit falling or overturning, fix the unit with foundation bolts, or with wire or other means.

If the location does not have good drainage, place the unit on a level mounting base(or a plastic pedestal).

Install the outdoor unit in a level position. Failure to do so may result in water leakage or accumulation.

Installation drawings of indoor and outdoor units

Connection cautions
model 3U19FS1ERA		4U25HS1ERA 4U30HS1ERA	5U34HS1ERA
connection priority between indoor and stop valve higher from down to up
when there is 1 indoor,the prior stop valve is	C	D	E
when there are 2 indoors,the prior stop valves are	C B	D C	E D
when there are 3 indoors,the prior stop valves are	C B A	D C B	E D C
when there are 4 indoors,the prior stop valves are		D C B A	E D C B
when there are 5 indoors,the prior stop valves are			E D C B A
Note: For better oil return and more reliable system, please execute as the above when connecting indoor unit.

• Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installed.
• In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts.(Prepare four sets of M8 or M10 foundation bolts, nuts and washers each which are available on the market.)
• It is best to screw in the foundation bolts until their length are 20mm from the foundation surface.

Outdoor Unit Installation Guideline

• Where a wall or other obstacle is in the path of outdoor unit's intake or exhaust airflow, follow the installation guidelines below.
• For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less.

Wall facing one side
More than 50 More than 300
Side view

Wall facing two sides
Side view

than 50

Wall facing three sides
Side view

Limitations on the installation

1.Precautions on installation

• Check the strength and level of the installation ground so that unit will not cause any operating vibration or noise after installation
  In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts.
• It is best to screw in the foundation bolts unit their length are 20mm from the foundation surface.

2. Selecting a location for installation of the indoor units

• The maximum allowable length of refrigerant piping, and the maximum allowable height difference between the outdoor and indoor units, are listed below. (The shorter the refrigerant piping, the better the performance. Connect so that the piping is as short as possible. Shortest allowable length per room is 3m)

Outdoor unit capacity class	3U19FS1ERA	4U25HS1ERA 4U30HS1ERA	5U34HS1ERA
Piping to each indoor unit	25m max.	25m max.	25m max.
Total length of piping between all lunits	50m max.	70m max.	80m max.

Refrigerant piping work

1. Installing outdoor unit

1) When installing the outdoor unit, refer to "Precautions for Selecting the Location" and the "Indoor/Outdoor Unit Installation Drawings". 2) If drain work is necessary, follow the procedures below.

2. Drain work

1) Use drain plug for drainage.
2) If the drain port is covered by a mounting base or floor surface, place additional foot bases of at least 30mm in height under the outdoor unit's feet.
3) In cold areas, do not use a drain hose with the outdoor unit. (Otherwise, drain water may freeze, impairing heating performance.)

3. Refrigerant piping work

1). Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the tor wrenches. Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and escaping gas.

Flare nut fighting torque
Flare nut for ∅ 6.35	14.2-17.2N.m(144-175kgf.cm)
Flare nut for ∅ 9.52	32.7-39.9N.m(333-407kgf.cm)
Flare nut for ∅ 12.7	49.5-60.3N.m(505-615kgf.cm)
Flare nut for ∅ 15.88	61.8-75.4N.m(630-769kgf.cm)

Valve cap tightening torque

Liquid pipe 26.5-32.3N.m(270-330kgf.cm)

Gas pipe 48.1-59.7N.m(490-610kgf.cm)

Service port cap tightening torque

10.8-14.7N.m(110-150kgf.cm)

2)To prevent gas leakage, apply refrigeration oil on both inner and outer surfaces of the flare. (Use refrigeration oil for R410A)

4. Purging air and checking gas leakage

When piping work is completed, it is necessary to purge the air and check for gas leakage.

WARNING

1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3) R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerents may damage the vacuum pump or the unit.

If using additional refrigerant, perform air purging from the refrigerant pipes and indoor unit using a vacuum pump, then charge additional refrigerant.
- Use a hexagonal wrench (4mm) to operate the stop valve rod.
- All refrigerant pipe joints should be tightened with a torque wrench at the specified tightening torque.

Connect projection side of charging hose(Which comes from gauge manifold) to gas stop valve's service port.

Fully open gauge manifold's low-pressure valve(Lo) and completely close its high-pressure valve(Hi). (High-pressure valve subsequently requires no operation.)

Apply vacuum pumping. Check that the compound pressure gauge reads-0.1MPa(-76cmHg). Evacuation for at lease 1 hour is recommended.

Close gauge manifold's low-pressure valve(Lo) and stop vacuum pump. (Leave as is for 4-5 minutes and make sure the coupling meter needle does not go back. If it does go back, this may indicate the presence of moisture or leaking from connecting parts. After inspecting all the connection and loosening then retightening thenuts, requat steps 2-4.)

Remove covers from liquid stop valve and gas stop valve.

Turn the liquid stop valve's rod 90 degrees counterclockwise with a hexagonal wrench to open valve. Close it after 5 seconds, and check for gas leakage. Using soapy water, check for gas leakage from indoor unit's flare and outdoor unit's flare and valve rods. After the check is complete, wipe all soapy water off.

Disconnect charging hose from gas stop valve's service port, then fully open liquid and gas stop valves. (Do not attempt to turn valve rodj beyond its stop.)

Tighten valve caps and service port caps for the liquid and gas stop valves with a torque wrench at the specified torques. See "3 Refrigerant piping" on page 6 for details.

5. Refilling the refrigerant

Check the type of refrigerant to be used on the machine namiplate.

Precautions when adding R410A

Fill from the liquid pipe in liquid form.

It is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation.

1) Before filling, check whether the cylinder has a siphon attached or not.(It should have something like "liquid filling siphon attached" displayed on it.)

Filling a cylinder with an attached siphon

Stand the cylinder upright when filling.

There is a siphon pipe inside, so the cylinder need not be upside-down to fill with liquid.

Filling other cylinders

Turn the cylinder upside-down when filing.

2) Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering.

6. Charging with refrigerant

1) This system must use refrigerantsant R410A.
2) Add refrigerant 20g per meter when the total piping length exceeds the standard value, but make sure that the total liquid piping length should be less than the max. value.

Outdoor Unit	Standard total liquid piping length	Max. total liquid piping length
3U19FS1ERA	30m	50m
4U25HS1ERA	40m	70m
4U30HS1ERA	40m	70m
5U34HS1ERA	40m	80m

Notes:

1) When using this product, you need not to set the address. But the L/N wires between indoor & outdoor units must be corresponded, or there will be communication failure.
2) Quiet Operation Setting. Set the DIP "8" to ON position of SW5, the system will run with lower noise, but the max. capacity will also reduce slightly.
3) Do not change the settings of other switches, wrong settings can make the system damage or other malfunctions.

7.Precautions for Laying Refrigerant Piping

- Cautions on pipe handling

1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible. Use a pipe bender for bending.(Bending radius should be 30 to 40mm or larger.)

- Selection of copper and heat insulation materials

When using commercial copper pipes and fittings, observe the following :

1) Insulation material: Polyethylene foam

Heat transfer rate: 0.041 to 0.052W / mK (0.035 to 0.045kcal/mh°C)

Refrigerant gas pipe's surface temperature reaches 110^ max.

Choose heat insulation materials that will withstand this temperature.

2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.

Gas pipe	Gas pipe insulation
O.D.:9.52mm,12.7mm Thickness:0.8mm	I.D.:12-15mm,12.7mm Thickness:13mm min.
Liquid pipe	Liquid pipe insulation
O.D.:6.35mm Thickness:0.8mm	I.D.:18-10mm Thickness:10mm min.

3) Use separate thermal insulation pipes for gas and liquid refrigerant pipe.

Flare tooling die	Flare tool for R410A	Conventional flare tool
	Clutch-type	Clutch-type(Rigid-type)	Wing-nuttype(Imperial-type)
	0-0.5mm	1.0-1.5mm	1.5-2.0mm

8.Cutting and Flaring work of piping

• Pipe cutting is carried out with a pipe cutter and burs must be removed.
  After inserting the flare nut, flaring work is carried out.

Flare tooling die	Pipe	Pipe diameter Size A (mm)
	Liquid side	6.35mm(1/4")	0.8~1.5
	Gas side	9.52mm(3/8")	1.0~1.5
		12.7mm(1/2")	1.0~1.5

Correct Incorrect
	Lean Damage of flare Crack Partial Too outside

9. On drainage

• Please install the drain hose so as to be downward slope without fail. Please don't do the drainage as shown below.

It becomes high midway.

The end is immersed in water. It waves.

It gap with the ground its too small.

There is the bad smell from a ditch.

• Please pour water in the drain pan of the indoor unit, and confirm that drainage is carried out serely to outdoor.
• In case that the attached drain hose is in a room, please apply heat insulation to it without fail.

WARNING

1) Do not use mineral oil on flared part.
2) Prevent mineral oil from getting into the system as this would educe the lifetime of the units.
3) Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.
4) Do never install a drier to this R410A unit in order to guarantee its lifetime.
5) The drying material may dissolve and damage the system.
6) Incom; ete flaring may cause refrigerant gas leakage.

In order to protect the environment, be sure to pump down when relocating or disposing of the unit.

1) Remove the valve caps from liquid stop valve and gas stop valve.
2) Carry out forced cooling operation.
3) After five to ten minutes, close the liquid stop valve with a hexagonal wrench.
4) After two to three minutes, close the gas stop vaile and stop forced cooling operation.

Wiring work

1. Electric wiring

• The air conditioner must use special circuit, and wiring by the qualified electrician according to the wiring rules specified in national standard.
• The grounding wire and the neutral wire shall be strictly separated. Connect the neutral wire with grounding wire is incorrect.
• The electric leakage breaker must be installed.
• All the electric wire must be copper wire. Power supply: 1PH, 220-230V~, 50/60Hz.
• The wiring method of power line is Y connection. If the power line is damaged, in order to avoid risk of electric shock, it must be replaced by the manufacturer or its repair center or other similar qualified person. The connecting cable must be shielded.

Fuse: T3.15A 250VAC T16A 250VAC (Please check with the outdoor unit wiring diagram.)

• Please check the circuit diagram about the fuse replaced.

2. Wiring method

• Wiring method of orbicular terminals

For the connection wire with orbicular terminals, its wiring method is as shown in the right figure: remove the connecting screw, put the screw through the ring on the end of the wire, then connect to the terminal block and fasten screw. Wiring method of straight terminals.

• For the connection wire without orbicular terminals, its wiring method is: loosen the connection screw, and insert the end of the connection wire completely into the Terminal block, then fasten the screw.

Slightly pull the wire outwards to confirm it is firmly held.

• Crimp connection method for wires without terminals

Connect the wire with same diameter to the two sides of the terminal

Do not connect the wire with same diameter to the same side

Do not connect the wire with different diameters

Correct Pressing
Terminal block

Pressing Clamps
Wrong Pressing

• Crimp connection method for connection wire

After connection, the wire must be fastened by wire cover. The wire cover shall press on the protection coat of the connection wire, as shown in right top figure.

Note: When connecting the wiring, confirm the terminal number of indoor and outdoor units carefully.

Incorrect wiring will damage the controller of air conditioner or the unit can not operate.

3. Wiring method of outdoor unit:

Power line

Remove the repair board of the outdoor unit and loosen the wire cover A, then put the live wire, neutral wire and grounding wire through the wire cover ,and connect them to terminal block correspondingly. After connection, fasten wire cover to its previous state.

Communication wire of indoor unit.

• Loosen wire cover, put the communication wire through the wire cover B, and connect them to terminal block correspondingly. After connection, fasten wire cover B to its previous state.

Note: Power line and communication wire are provided by consumers themselves.

4. Wiring method of indoor unit

Loosen wire cover and connect the power line and communication wire of indoor unit to the terminal correspondingly.

Note:

When connecting power line to power supply terminal, please pay attention to the following items:

• Do not connect the power line with different dimensions to the same connection wire end. Improper contact will cause heat generation.
• Do not connect the power line with different dimensions to the same grounding wire end. Improper contact will affect protection.
• Do not connect the power line to the connecting end of communication wire. Incorrect connection will cause damage to the connected unit.

5. Example wiring diagram.

Wiring diagram please refers to 4U30HS1ERA

Before starting the test running, please confirm the following works have been done successfully.

1) Correct piping work;

2) Correct wiring work;

3) Correct match of indoor and outdoor unit;

4) Proper recharge of refrigerant if needed.

• Make sure that all the stop valves are fully open.

• Check the voltage supplied to the outdoor and indoor units, please confirm that is 230V .

Wiring Error Check

This product is capable of automatic checking of wiring error.

Switch on all the 4 dip-switches on the outdoor unit small service PC-board as shown on the right. Then power off the unit and power on again, the system will enter the operation of "Wiring Error Check". After 3 minutes stand-by, the unit starts for automatic wiring checking.

Approximately 30 50 minutes (depends on how many units installed in the system) after the unit starts, the Errors of the wiring will be shown by the LEDs (1 to 5).

During this operation, the digital-number will alternately show the compressor working frequency (e.g. 50 stands for the current running frequency) and letter "CH"(means checking).

After this operation, if all the wiring is correct, the digital-number will show "0", if there has wrong wiring, the digital-number will show "EC"(error connection) and also it will flashing.

The service monitor LEDs indicate the error of wiring, as shown in the table below. For details about how to read the LED display, refer to the service manual.

If self-checking is not possible, check the indoor unit wiring and piping in the usual manner.

LED	1	2	3	4	5	Message
Status	OFF					Unit not connected
	ALL Flashing					Automatic checking impossible, all units connect wrong
	ALL ON					All units connect correctly
	ON	FLASHING	FLASHING	ON	FLASHING	ON: unit connect correctly FLASHING: unit connect wrong, need to change the wiring manually between 2,3,and 5
	ON	FLASHING	FLASHING	ON	ON	ON: unit connect correctly FLASHING: unit connect wrong, need to change the wiring manually between 2,3
	Only one LED flashing					Abnormal

Test running.

1) If the temperature is lower than 16^ , it is impossible to test cooling with remote controller, and also when the temperature is higher than 30^ , it is impossible to test heating.
2) To test cooling, set the lowest temperature at 16^ . To test heating, set the highest temperature, at 30^ .
3) Please check both cooling and heating operation of each unit individually and then also check the simultaneous operation of all indoor units.
4) After ruining the unit for about 20 minutes, check the indoor unit outlet temperature.
5) After the unit is stopped, or working mode changed, the system will not start again for about 3 minutes.
6) During cooling operation, frost may occur on the indoor unit or pipes, this is normal.
7) Operate the unit according to the operation manual. Please kindly explain to our customers how to operate through the instruction manual.

• Seven-segment numeric display

1) When unit is runing, this seven-segment numeric will display the frequency of compressor. For example, "4" means compressor running frequency is 40 Hz, "7" means compressor running frequency is 108Hz.
2) When faulty happens, seven-segment numeric will flash and display some numbers, this number is failure code. For example, a flashing "32" means No.32 failure, that is indoor and outdoor communication error.

• Communication LED

5 green LED means 5 indoor units. If one LED keep lighting that means the corresponding indoor unit has good communication with outdoor unit. If one LED is not lighting, that means there is no communication between indoor and outdoor.

Malfunction Code	Diagnosis	Possible reasons
1	Faulty of outdoor unit EEPROM Communication failure between Module and ECU	Faulty of outdoor unit EEPROM
2	Communication cables broken or not well connected.IPM overcurrent or short circuit	IPM on the module overcurrent,or short circuit
4	Communication failure between Module and ECU	Communication cables broken,or not be well connected,or faulty main ECU,or faulty module
5 Module operated overload Module worked overload
6	Module low or high DC voltage (under 192V or above 375V)	VDC<192V or VDC ≥75V
8	Discharging temperature overheating.Lack of refrigerant, ambient temperature too high or PMVs blocked.	Discharging temperature overheating.Lack of refrigerant,ambient temperature too high or PMVs blocked.
9	Malfunction of the DC fan motor	Fan is blocked,or the terminal is disconnected from the ECU
10 Malfunction of defrosting temp. sensor(Te) Sensor disconnected,or broken,or at wrong position or short circuit
11	Malfunction of compressor suction temp. sensor (Ts)	Sensor disconnected,or broken,or at wrong position or short circuit
12 Malfunction of ambient temp. sensor(Ta) Sensor disconnected,or	broken,or at wrong position or short circuit
13	Malfunction of compressor discharge temp. sensor (Td)	Sensor disconnected,or broken,or at wrong position or short circuit
15	Communication failure between indoor&outdoor unit	Wrong connection,or the wires be disconnected,or faulty ECU,or faulty power supply
17	4-way valve switching failure	Coil of 4-way valve is disconnected,or faulty outdoor ECU
18	Module overcurrent / Module switch failure	Module switch failure,or faulty module
20 Indoor overload	Indoor overload
21 Indoor frosted	Indoor frosted
23	Module temperature too high (Overload Protector)	Module temperature too high,or the temperature sensor broken(detected by the ECU)
24	Compressor overcurrent	Over current of the compressor,or malfunction of the module
25 Input overcurrent		Over current of the system,or malfunction with indoor or outdoor fan motors,or faulty ECU
26	MCU reset	MCU on the ECU reset
27	Module current detect circuit malfunction	Current detect circuit broken,or faulty module
28	Malfunction of liquid pipe temp. sensor for indoor unit A	Sensor disconnected,or broken,or at wrong position or short circuit
29	Malfunction of liquid pipe temp. sensor for indoor unit B	Sensor disconnected,or broken,or at wrong position or short circuit
30	Malfunction of liquid pipe temp. sensor for indoor unit C	Sensor disconnected,or broken,or at wrong position or short circuit
31	Malfunction of liquid pipe temp. sensor for indoor unit D	Sensor disconnected,or broken,or at wrong position or short circuit
32	Malfunction of gas pipe temp. sensor for indoor unit A	Sensor disconnected,or broken,or at wrong position or short circuit
33	Malfunction of gas pipe temp. sensor for indoor unit B	Sensor disconnected,or broken,or at wrong position or short circuit
34	Malfunction of gas pipe temp. sensor for indoor unit C	Sensor disconnected,or broken,or at wrong position or short circuit
35	Malfunction of gas pipe temp. sensor for indoor unit D	Sensor disconnected,or broken,or at wrong position or short circuit
36	Malfunction of gas pipe temp. sensor for indoor unit E	Sensor disconnected,or broken,or at wrong position or short circuit
39	Malfunction of condensing temp. sensor(TC)	Sensor disconnected,or broken,or at wrong position or short circuit
40	Malfunction of liquid pipe temp. sensor for indoor unit E	Sensor disconnected,or broken,or at wrong position or short circuit
41	Malfunction of piping temp. sensor(TOCl)	Sensor disconnected,or broken,or at wrong position or short circuit
42 System high pressure switch off		High pressure switch is disconnected,or high pressure switch is broken,or high pressure switch worked
43 System low pressure switch off		Low pressure switch is disconnected,or low pressure switch is broken,or low pressure switch worked
44	System high pressure protection.Refrigerant overabundance,High condensing temp. or malfunction fan motor.	Tc too high and faulty outdoor fan motors when cooling,or faulty indoor fan motor when heating,or refrigerant overabundance.
45	System low pressure protection.Refrigerant shortage,Low defrosting temp., or malfunction of fan motor.	Te too low and faulty outdoor fan motors when heating,or faulty indoor fan motor when cooling,or refrigerant shortage.
46	Malfunction of module temp.sensor	Sensor disconnected,or broken,or at wrong position or short circuit

Haier

Address:No.1 Haier Road,Hi-tech Zone,Qingdao 266101 P.R.China

Contacts: TEL [phone]; FAX [phone]

Website: www.haier.com

Haier

MANUAL DE INSTALLACION DEL APARATO DE AIRE ACONDICIONADO DE TIPO MULTISPLIT

3U19FS1ERA

4U25HS1ERA

4U30HS1ERA

5U34HS1ERA

Contidente

CONDITIONS D'ELIMINATION

Adresse: No.1 Haier Road, Hi-tech Zone.Qingdao 266101 P.R.Chine

Contacts: Tel.: [phone]; Télécopie [phone]

Site Internet: www.haier.com

Haier

Adresse: No.1 Haier Road, Hi-tech Zone, Qingdao 266101, VR-China

Kontakt: TEL [phone]; FAX [phone]

Website: www.haier.com