MKH2V500R3 - Camera HTW - Free user manual and instructions

USER MANUAL MKH2V500R3 HTW

166.2 Non-Unit Related Faults

HTW-MKH2(3) -V700-R4

FANCOIL CEILING FLOOR

Standard Conditions for Use Switch and Control Air Supply Direction Adjustment

Troubleshooting Non-Unit Related Faults Product Data

Packaging and Assembly Handling Instructions Installation Liquid Pipe Connections Electrical Connection Startup Guide

Maintenance by Customer Professional Maintenance

CLEANING AND MAINTENANCE

181 PRODUCT OVERVIEW This ceiling and floor type unit is used for indoor air quality regulation in various scenes.This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons. 2 WARNING This section describes important safety information. Please read the Manual carefully, especially those operating standards with “Warning” or “Note” signs. Failure to abide by these standards may lead to personal injury or damages to the unit or other items.

NOTE All the illustrations of this manual are for explanatory purpose only. If the appearance, functions and physical objects are inconsistent, refer to the actual product. Air outlet Air inlet Product appearance(exposed) Air outlet Air inlet Product appearance(exposed)

Operation and Installation Manual Fastening screw Three-way valve and its piping assembly Auxiliary drain pan Wired controller 7 Inlet hose Footing Pcs Accessories

Pcs 4 NO. Name Schematic Unit Qty Remarks To be purchased separately To be purchased separately from manufacturer To be purchased separately from anufacturer To be purchased separately from manufacturer Set

Pcs 1 To be purchased separatelyPcs 1 To be purchased separatelyPcs 1 8 Outlet hose To be purchased separatelyPcs 1 9 Filter To be purchased separatelyPcs 1 10 Check valve (inlet and outlet pipes) To be purchased separatelyPcs 2 Set 11 1 To be purchased separately Drain pipe PcsDo not install the unit where flammable gas may leak. Otherwise, fire may occur. Do not install the unit in potentially explosive atmospheres. Keep the unit far away from combustible spray to avoid fire. Use proper fuse. Do not use iron wire or copper wire, as it may cause fire or unit abnormality. When connecting power supply to the unit, follow the regulations of the local electric company. Provide separate power switch to ensure the unit can be disconnected from power properly. Do not use this unit to store spare parts or other items. Please attach enough importance to the signs and symbols indicated on the unit. Any other potential hazards not covered in the Manual (if any) should be specified in labels attached to the unit. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard. Read the Manual carefully and perform a safety inspection in advance so that you can be fully aware of the possible dangers as you use or install the unit. The manufacturer shall not be liable for any personal or animal injury or damage to any object caused by incorrect installation, adjustment, maintenance or improper use. The manufacturer is not held liable for any damages resulting from faulty operations against this Manual. Do not expose this unit to wet or humid environments as this may damage electrical components. Do not store this unit in the open air. Do not stack unpackaged units. Do not use this unit to store food, plants, precision instruments, artwork etc. To operate the unit for the first time, exhaust the air in the coil; otherwise, the performance may be compromised. Clean the inside of the water pipe before use. Remember to implement anti-freezing measures for coil in winter. For details, please refer to anti-freezing instructions herein. Keep the unit energized even if it is not in service over a long period. Adopt self-protection measures when you install, maintain or clean the unit. Do not press the unit. Handle it carefully as any damages may cause unit malfunction. Reserve enough space for installation and maintenance. Before installation, check whether the unit is reliably grounded. Otherwise, do not proceed with the installation. In no circumstances can the earth line for main power switch be disconnected. Rotate the fan impeller during installation. Contact the manufacturer if you hear any abnormal noises. For any faults not covered by the Manual, please contact the manufacturer immediately. Tampering with the unit can result in very hazardous situations. The manufacturer is not liable for any damages caused by tampering with the unit. The consequences for failing to abide by the Manual shall be borne by the user on its own.

2.1 Meaning of Various Labels

A situation that may lead to death or injury. WARNING A situation that may cause damage to the unit or loss of property. Indicates a useful hint or additional information. INFORMATION

Ask professional staff to install (install for the first time, change the place of the unit or re-install) and repair the unit and its parts. The installation operator must have acquired the relevant professional qualification. Do not attempt to install or repair the air conditioner by yourself, as any improper operations may lead to fire, electric shock, personal injury or water leakage. Make sure the unit is grounded reliably in accordance with the laws. Otherwise, it may cause electric shock. Stop using the air conditioner and consult your dealer in case of any abnormalities. Otherwise, fire or electric shock may occur. Do not attempt to maintain or alter the unit by yourself. Improper operations may cause water leakage, electric shock or fire. Make sure the leakage protection device is installed, or electric shock may occur. Do not wash the unit with water, or electric shock may occur. To avoid electric shock, do not place any water-filled container on the unit. Do not operate the switch with wet hands, or electric shock may occur. Do not put your fingers or other objects into the unit, it can result in serious injury. Do not obstruct the air supply channel, it may result in personal injury or damages to the unit. Check that the supporting structure of the unit is securely installed after a long period of use, to prevent fall accidents. Make sure the installation base and hoisting are robust and reliable; otherwise, the unit may fall and lead to accidents. Do not expose yourself to cold air over a long period. Too low temperature may cause harm to your health. Do not expose animals or plants to air outlet to avoid any harm. This unit is intended for air handling only. Do not use it for animal rearing. 3Make sure that the water discharge pipeline can provide smooth drainage. Improper installation of the water discharge pipeline may lead to water leakage, and damages to furniture. Make sure the liquid pipeline and air duct are reliably supported. Make sure pipes and connectors are not distorted. The water inlet and outlet pipes must have check valves installed and be wrapped with insulation materials. Connect the wires as required. Otherwise, it may cause damage to electrical parts. The actual power supply must be consistent with the nominal nameplate value, or permanent damage may occur. Use power cord with a proper diameter. Do not use damaged cables. Replace the damaged cables immediately if necessary. Do not attempt to repair the damaged cables. Keep for future reference. 3 OPERATION INSTRUCTIONS This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision. The unit can only operate normally as long as you strictly adhere to the regulations outlined in the Manual. Water inlet temperature range is 3-75°C.

3.1 Standard Conditions for Use

The wired controller should be purchased separately from the manufacturer. Other wired controllers are not applicable. Installation position of wired controller You can install the wired controller on the left, or right of the unit or on the wall as required. Make sure the wired controller is close to the electric control box. Please refer to the Wired Controller Operation and Installation Manual for installation methods.

3.2 Switch and Control

Keep the unit serial number available for future reference and in case when you need to contact the after-sales service. Do not bring any combustible materials near the air outlet. Transport the unit as per requirements indicated on the package. Avoid crash, fall-over or squeeze and keep away from rain and snow during transportation. Store the unit in a clean, dry, fire-proof and well-ventilated place without any corrosive gas. To avoid shock during transportation, fix the unit and its accessories on the transportation platform with ropes or by other means. The manufacturer is not responsible for unit damages or personal injury resulting from unauthorized operations or use of non-original parts or accessories. Ventilation Periodically ventilate the room where the unit is installed. Ventilation is especially important in case the room has many people in it or has flammable devices or gas sources. Poor ventilation may result in lack of oxygen. - Before unit operation, clean water pipes to prevent them from being blocked. - Upon FCU test run or switching between hot and cold water, open the vent valve to exhaust air in the coil until water flows out. Otherwise, the heat exchange performance may be significantly compromised. During operation Filter is normally not removed except for maintenance purpose, as doing so may cause foreign objects to enter the unit.

Figure 3-1 Installation position of wired controller Controller installation place

Water inlet temperature range recommended is 3-65°C. Water inlet pressure range is 0-1.6MPa. Use the system in the following temperature for safe and effective operation. 17-32°C Cooling Mode Indoor temperature Heating 0-30°C If air conditioner is used outside the above conditions,it may cause the unit to function abnormally.Optimum performance will be achieved within these operating temperature range. In normal cases In cooling mode, fog may appear at the air outlet.1) Start and stop The Operation Manual is provided with the wired controller. You can complete the following operations using the manufacturer’s wired controller: Start/stop the unit. Switch between seven fan speeds and auto. Constant temperature set within a desired range. Switch among Cool, Heat, Dry, and Auto. Start or stop the unit using the wired controller or centralized controller. Figure 3-2 After installation of wired controller Start the unit after it has not been used for a long time Leave the unit unused for a long period Before starting the unit again, you should: clean or replace the air filter. clean the heat exchanger. make sure the drain pipe for drain pan of heat exchanger is clean; if not, wash it. remove air from the water system. If the unit is not to be used in winter, drain the water system when appropriate. Otherwise, the water in the system may freeze, thus causing damage to the unit, or leading to water leakage, electric shock or damage to furniture.

0-10V wired controller output DC voltage signal to main board.The main board receives the signal and controls the motor according to the corresponding speed. Controller output voltage Fan speed shutdown low medium low medium medium high high super high strong Seven fan speeds Auto speed 0≤voltage<1 1≤voltage<3 3≤voltage<4 4≤voltage<5 5≤voltage<6 6≤voltage<7 7≤voltage<8 8≤voltage<10 The wired controller is adjusted according to the logic of the seven-level control system. Table 3-2 0-10Vwired controller output signal specification table DC unti HTW-KJRP75ABKE Table 3-1 wired controller and the unti correspond to the table AC unti HTW-KJRP86IMFKE4.2 Professional Maintenance

4.1 Maintenance by Customer

NOTE Cleaning and maintenance must not be performed by minors without supervision. NOTE Disconnect the unit from power supply before cleaning or maintenance.Do not spray water on the unit.Cleaning the outer surface of the unit is permitted. Dip a piece of soft cloth in cold water and alcohol to clean the unit. Do not use hot water, solvent, abrasive or corrosive substances.The filter is at the bottom of the unit, while the air return outlet is at the bottom or the rear side.To take the air filter out, do as follows:a) Remove the screws ① and ②.b) Rotate the filter bracket.c) Pull out the filter.

1) Cleaning the air filter

To ensure proper air return, clean the air filter at least once every month. If used in a dusty environment, the filter must be cleaned on a more frequent basis. Take the air filter out before you can clean it.Blow the air filter with compressed air or clean it in water.Before putting the filter back, make sure it is clean and dry. If it is damaged, replace it with a new one.Figure 4-1 Diagram of removing the filter NOTE Do not touch the heat exchanger to avoid any personal injury.To adjust the air supply direction, do as follows:1) Remove the screws (M3.9*10) fixing the louver.2) Disassemble the louver manually.3) Rotate the louver by 180° and then put it backmanually.4) Put the screws back and fasten them.You can manually adjust the louver to change the air supply direction.

3.3 Air Supply Direction Adjustment

Figure 3-3 Adjusting the air supply direction

ScrewScrew screw 6Figure 4-2 Diagram of unit (exposed)

Figure 4-3 Diagram of unit (concealed) NOTE Only qualified technicians who have unit and refrigeration system experience can perform maintenance operation. Proper gloves are required. For dual-pipe system and four-pipe cold water coil, the water inlet and outlet joints are G3/4. For four-pipe hot water coil,the water inlet and outlet joints are G1/2. The casing of the unit is made of galvanized steel; the air filter is made of nylon fibre, and the aluminum alloy air filter can be customized; the motor has internal overheat protection and overcurrent protection; a centrifugal rotating fan is used; a soundproof material such as sponge is used; the fin type heat exchanger is composed of copper pipe and aluminum foil, and the heat exchanger pipe connection can be changed on site. Before maintenance or check, disconnect the unit from power supply, keep the main switch closed with warning sign attached, to prevent others from resuming the power accidentally.

Check whether the air filter is clean. The air filter is washable as it is made of fibre. When the unit is operational, make sure you check the air filter every month.

3) Once every six months

Check whether the heat exchanger and condensate drain pipe are clean. After power disconnection, disassemble the unit to check the heat exchanger and condensate drain pipe. Heat exchanger Air outlet grille Drain pan Electric control box BaseFanFilterMotorCasing Water pipe connettion Heat exchanger Air outlet grille Drain pan Electric control box FanFilterMotorReturn air cover

Drain pipe connection Drain pipe connection (4 pipe unti have 4 connetion) Water pipe connettion (4 pipe unti have 4 connetion)Figure 4-4 Removal of casing Figure 4-6 Removal of casing Figure 4-8 Removal of drain pan and heat exchanger Figure 4-5 Removal of filter, upper volute and motor screws a) Unplug the unit. b) As shown in Figure 4-4, remove screws ①*2 and ②*2 and then the casing. c) As shown in Figure 4-5, remove screws ①*2 to take the filter out. Then, remove the upper volute. After that, remove four screws (②) that fix the motor, to disconnect the motor cable and the main board. Then, take out the fan and the motor. Disassemble the fan to get the motor. Install back the motor in reverse order.

7) If the heat exchanger needs to be replaced, follow the steps below:

a) Unplug the unit. b) Shut off the water supply. c) As shown in Figure 4-6, remove screws ①*2 and ②*2 and then the casing. d) Drain the coil. e) Disassemble the inlet and outlet pipes. f)As shown in Figure 4-7, remove screws ①*2 to remove the electric control box. g) As shown in Figure 4-8, remove screws ①*7 to take the drain pan out. Then, remove screws ②*4 to take the heat exchanger out. h) Pull out the temperature sensor plug. Install back the heat exchanger in reverse order.

Heat exchanger Temperature sensor plug Drain pan

Casing assembly Figure 4-7 Removing the electric control box e) Check whether the system has air. Start and let the system run for several minutes. Stop the system. Open air discharge valve to remove air. Repeat this operation until the air is exhausted.

5) Maintain the circuits.

Check whether the power cord, electrical contacts, terminals etc. are loose or damaged.

6) If the motor needs to be replaced, follow the steps below:

4) If necessary, you should:

a) Remove any foreign matters that may impede air flow. b) Remove the dust with compressed air or clean water and avoid damage to the heat exchanger. c) Dry with compressed air. d) Check for any impurities in the drain pipe that may impede water flow.

FanFan Upper propeller housing Filter Motor Electric control box

18) If the unit or its parts need(s) to be removed, make sure that:

Only a professional person can disassemble the unit. The system with antifreeze must not be discarded; otherwise, it will cause pollution. It should be collected and then be disposed off properly. As a special waste, electronic components must be handled by professional persons together with polyurethane foam, polyurethane and sound absorbing sponge.

5.1 Packaging and Assembly

5 Installation Instructions NOTE The instructions are applicable to IDU only. Customization is required for use in salty surroundings (close to the shore). Install the water softening device if hard water that has a high salt content is to be supplied to the coil. Handle with care. Do not exert too much pressure on the unit. Any damages to the fan, unit surface or piping may cause faults. Only trained professionals can move and lift the unit. Upon arrival of the unit, you must check whether it is intact and provided with complete accessories. Using damaged unit may be hazardous.

1) When removing the unit package, follow the steps

below: Check whether the package and unit are intact and whether accessories are complete. Unpack the unit. Dispose off packaging materials at a suitable waste receiving or recycling station, depending on the laws of the country or locality where the installation is to be done. Place the package out of the reach of children.

5.2 Handling Instructions

All of the following operations must be performed in accordance with current health and safety regulations, including the equipment used and the procedures followed. Before operation, verify that the lifting device is capable of lifting the unit. You can lift or move the unit using your hand or using a proper handcart. Move the unit in case it weighs over 30 kilograms and at this time, box it before it can be lifted using a crane or by similar means.

Follow the instructions when installing the unit. Read the Manual carefully before proceeding with any operations. Installation can be only performed by a professional technician. Incorrect installation may lead to unit faults or degraded performance. You must abide by the regulations of the country or locality where the installation is located. Before installation, unpack the unit and its accessory,and find the attached Operation and Installation Manual and related assembly. The support surface of installation must be strong enough to bear the weight of the unit. Before installation, check with the customer whether the wall or ground where installation is located has buried wires, water pipes or gas pipes. Make sure the inlet and outlet pipes and drain pipe are air-tight.

1) Check the space technically required for

installation: Space required for installation. Space required for connecting the liquid lines and other valves. Space required for connecting power supply. Space required for connecting the unit to the external control panel (if any). Space required for setting flow route and air inlet (for specific models). Space required for correct and sufficient air flow. Space required for removing condensate water. Space required for cleaning the filter. Space required for cleaning internal assembly and maintenance.

2) Installation guide:

Remove the casing: Remove screws ①*2 and ②*2 and then the casing.

Wear personal protective equipment during handling. To avoid damages to external structures, internal mechanical and electrical components, caution must be exercised during handling. Make sure there are no obstacles or pedestrians along the way in case collisions or crushing occurs or lifting or handling equipment falls over.Figure 5-1 Figure 5-2 Diagram for fixing the unit body Figure 5-4 Installation of lifting bolts Mark the places for screws on the wall according to the unit mounting holes or dimensions specified in Figure 5-12. The drain pipe for condensate water must be smooth enough to allow unobstructed water discharge. As shown in Figure 5-2, fasten four screws (①) into a proper masonry structure. The footings shown in Figure 5-3 are optional. You can purchase them separately and install them as follows:

1. Put the footings beside the unit to be installed.

2. Place the mounting holes on the unit base into the

corresponding footing locating pin and install screws ①*2 and ②*2 to fix the footing according to Figure 5-3. Figure 5-3

3) Install the unit following the steps below in case it

is ceiling mounted. To match the existing structure, set the screw pitch according to the unit dimensions.

Base Footing Base Wood structure Original concrete slasb structure Structure the square rod on the beam to set the lifting bolts. Use embedded bolts, and pull bolts. Steel framework Newly set concrete slab structure Directly set and use an angle steel for support. Set using embedded appliances, and embedded type of bolts. Knife-type insertion piece Sliding-type insertion piece Reninforced bar Embedded bolt(hanging and embedded bolt of piping) Suspension bolt Suspension bolt Angle steel for support

Casing assemblyFigure 5-5 Diagram of ceiling exposed Figure 5-6 Diagram of ceiling concealed

5.3.1 Spacing and Positioning

Incorrect positioning or installation may increase the noises and vibration of the unit during operation. If not enough space is reserved during installation, the unit may face difficult maintenance and reduced performance. The unit allows vertical installation, provided that correct positioning is arranged in advance. As shown below, a is greater than 150 mm, b greater than 90 mm, c greater than 50 mm and d greater than 1500 mm. Figure 5-7 Figure 5-10 Vertical type exposed Figure 5-8 Figure 5-9 Ceiling exposed Figure 5-11 Ceiling concealed

Please make 3 degrees to install the unit 3°5.3.2 Dimensions

5.4 Liquid Pipe Connections

1) Only professionals can operate the liquid pipes.Drain pipe must be the different side with the electric control box.Connect the unit to the water system using inlet and outlet connectors.Figure 5-12 Table 5-1 Unit: mmFigure 5-13 NOTE Do not consider the unit as a surface that can be relied on during actual use. Reserve enough space during installation for ventilation purpose.Using water or spray near the unit can cause electric shock and malfunction.MODEL

39(AC)All water system coils are equipped with discharge and drain valves. Use a screwdriver or wrench to open and close the valve.

2) When installation is complete,

a) Remove air inside pipes. b) Wrap the connecting pipes and all the valve body with anti-condensation material (EPDM or PE) of no less than 10 mm thick or install auxiliary drainage equipment. c) Pour water into the drain pan and check it all the way until you can see water flows from the drain outlet. Alternatively, you may check the drain channel and remove impurities that may obstruct the flow. d) Install the condensate drain system. e) The condensate drain system must be properly lowered to ensure water discharge. Follow the steps below to set the condensate drain system.

3) Set water storage elbow

The condensate drain system must be fitted with a suitable elbow to prevent odour penetration. Follow the steps below to set the elbow. Figure 5-14 Figure 5-15 The customer has to purchase the three-way valve and its accessories (Operation and Installation Manual attached) separately from the manufacturer. The customer may also need to purchase the auxiliary drain pan separately from the manufacturer if required.

4) How to change the coil from left-hand connection

to right-hand connection Left-hand connection of the coil is adopted by default. You can rotate the coil and change to right-hand connection. Before installation, you should change the direction of the coil on the ground. Steps of changing the coil direction: As shown in Figure 5-17, remove screws ①*2 and ②*2 and then the casing. As shown in Figure 5-18, remove screws ①*7 to take the drain pan out. Then, remove screws ②*4 to take the heat exchanger out. Pull out the temperature sensor plug. Rotate the coil in the direction as shown in Figure 5-18. As shown in Figure 5-19, remove screws ①*2 to take the electric box out. Fasten the screws on the coil. As shown in Figure 5-19, block the diamond-shaped holes on the side plate (the plate without inlet and outlet pipes) with sponge. Reverse the direction of drain pan plug. Re-install the electric box to the side plate without inlet and outlet pipes. Re-connect the wires. Figure 5-17 Removal of casing 50mm50mm Place a drain stopper at the bottom of the elbow 3cm/m Make sure the drain connector is stress-free Base Remove the knockout plate at the foundation in case the water pipe passes under the unit knockout plate

Casing assembly Figure 5-16 See the steps below for installation of auxiliary drain pan: auxiliary drain panFigure 5-18 Figure 5-19 Removing the electric control box and blocking the diamond-shaped holes

The water in the unit may freeze when the unit is left unused in winter. Drain the water system when appropriate if it is not used over a long period. Or you can simply add some antifreeze in water. NOTE Mixing water with glycol will affect the unit performance. Please pay attention to the safety instructions attached to the glycol container.

Electric control box Diamond-shaped holes blocked with sponge

Heat exchanger Temperature sensor plug Drain pan

5.5 Electrical Connection

NOTE Make sure that the power supply falls with 220-240V~1ph 50Hz/60Hz and is able to provide enough wattage for the unit. The power supply system must comply with the current national safety regulations. The electrical connection must be completed by qualified professionals and must comply with local laws and regulations. The company is not responsible for personal or property damage resulting from any incorrect electrical connections. Provide dedicated and suitable leakage protection device for the unit, with a minimum distance of 3 mm among the wiring contacts. The unit must be grounded reliably. Make sure that the power cord has a large-enough cross section to withstand the maximum current required. Never use a damaged cable. Perform electrical connections according to the wiring nameplate (stick to the cover of the electronic box) of the unit. Secure the cable using clamps in the electric control box to ensure the safety of the power supply cable and the connection cable. Do not pull, step on or squeeze the cable. Do not use nails or staples to secure the power cord. You need to pass the cable through the knockout hole at the foundation. For this stationary appliance it is required to have for disconnection of mains supply and all-pole switch with a contact opening of at least 3mm in the fixed wiring.

The grounding wire in the electrical control box needs to be longer than the current-carrying wire. For DC 4-Pipe series，the cooling water valve and heating water valve would open at the same time when the PCB receive the fan speed control signal from 0-10V wired controller.Please don't turn on the chiller and heat pump simultaneously，and we suggest to install another check valve to stop the water flow when it is necessary.15 Figure 5-21 Cabling diagram(DC FAN) CableIron plastic strip Positioning thread buckle Refer to Tables 5-2&5-3 for the specifications of the power cord and communication wire. A wiring capacity that is too small will cause the electrical wiring to become too hot, and lead to accidents when the unit burns and becomes damaged. Table 5-2 Model ALL Power supply 220-240V~50/60Hz Communication wire between indoor unit and wired controller * Shielded ×AWG16-AWG18

CIRCUIT BREAKER/FUSE(A) 15/15

Phase Volt and frequency 1-phase Please refer to the corresponding wired controller manual for the wired controller wiring. Select the wire diameters( minimum value) individually for each unit based on the table 5-3. Maximum allowable voltage range variation between phases is 2%. Select circuit breaker that having a contact separation in all poles not less than 3 mm providing full disconnection，where MFA is used to select the current circuit breakers and residual current operation breakers: Table 5-3 Rated current of appliance（A） Nominal cross-sectional area (mm )

>32 >50 and and and and and and and

and and and and and and and

and 1 and and and and and and and

Flexible cords Cable for fixed wiring 26 SERVICE GUIDE Ask a professional technician to repair the unit in case it goes wrong. Make sure the power supply is disconnected during repair. Machine commissioning or first start-up must be performed by a professional. Before startup, make sure that the installation and electrical connections are made in accordance with this Manual, and that no unauthorized personnel is near the machine during operation.

1) Before starting the unit, make sure that:

The device is positioned correctly. The water system’s flow and piping are correct. The water pipe is clean.

The warranty does not cover the damage caused by dismantling or cleaning of the internal components by unauthorized agents. The system maintenance must be carried out by qualified maintenance personnel. Except as noted above, if the above faults are not typical and the unit still fails, follow the steps below.

When any unusual situations arises (burning odour, etc.), stop the unit immediately and turn off the power. As a result of a certain situation, the unit has caused damage, an electric shock or a fire. Please contact the agent. WARNING Error Measures If a safety device, such as a fuse, circuit breaker or a leakage circuit breaker is triggered frequently or the ON/ OFF switch is not working properly. The operating switch is not functioning normally. If a centralized controller is used, the unit number is displayed on the user interface, and the operating indicator is flickering, and an error code is shown on the screen as well. Turn off the main power switch. Turn off the power supply. Notify the installation personnel and report the error code. Error Measures If the system does not run at all. The system is running but there is insufficient cooling or heating. Check whether there is a power failure. Wait for the power supply to be restored. If a power failure occurs when the unit is still running, the system will restart automatically once the power is restored. Check whether the air outlet is blocked by any obstacles. Remove the obstacles. Check whether the filter is blocked. Check the temperature setting. Check the fan speed settings on the user interface. Check whether the doors and windows are open. Close the doors and windows to shut out wind from the external environment. Check whether there are too many people in the room when the cooling mode is in operation. Check whether the heat source of the room is too high. Check whether there is direct sunlight into the room. Use curtains or blinds. Check whether the angle of air flow is appropriate.

The air can flow normally. The condensate water can flow normally to the drain outlet and the elbow. The heat exchanger is clean. The electrical connection is correct. The connecting cable is secure. The power supply meets requirements. The motor works normally within the maximum allowable value.Refer to Maintenance Manual for troubleshooting.

1) Error code overview

If a centralized controller is used, error codes appear on the user interface. Contact the installation personnel and inform them of the error code, unit model and serial number (you can find the information on the nameplate of this unit). NO.

PROM communication error Room temperature sensor port abnormal Water level exceeding warning line Anti-freezing protection Flashes once every 3 seconds Flashes 2 times every 3 seconds Flashes 2 times every 3 seconds Flashes 3 times every 3 seconds Flashes 4 times every 3 seconds Flashes 5 times every 3 seconds Buzzes 2 times every 3 seconds Buzzes 2 times every 3 seconds Error Protection The following fault symptoms are not caused by the unit itself:

1) Fault symptom: Fan speed is not consistent with the setting

The fan doesn’t respond to the controller. In cooling mode, when the pipe water temperature is outside the allowable range of room temperature, the fan speed will be maintained at a low level to avoid direct exposure to hot air. In heating mode, when the pipe water temperature reaches a certain low level, the fan speed will also be maintained at a low level to avoid direct exposure to cold air.

2) Fault symptom: Fan direction is not consistent with the setting

The fan direction is inconsistent with the direction indicated on the user interface. Swing is a customized function. If the customer customizes this function and the fan direction does not correspond to the set direction, this is because the unit is controlled

3) Fault symptom: white fog from a certain unit

This may result from high humidity during cooling mode. If the interior pollution of the fan coil unit is severe, the indoor temperature distribution may be uneven. At this time, you need to clean the inside of the unit. Ask the dealer for information on how to clean the unit. This operation must be carried out by qualified maintenance personnel.

4) Fault symptom: dust and dirt in the unit

This may happen after the unit is used again after being left idle for a long period. This is because there is dust inside the unit.

5) Fault symptom: odour from unit

This unit will absorb the odours of rooms, furniture, cigarettes and others, and then disperse the odours again. Odour might occur after small animals enter the unit.

6.2 Non-Unit Related Faults

Error5 Flashes 4 times every 3 seconds Buzzes 2 times every 3 seconds

DC motor stall fault Steady on Coil sensor (T2C) port abnormal Steady on Flashes 3 times every 3 seconds Buzzes 2 times every 3 seconds

Coil sensor (T2C) port abnormal Error Steady on Flashes 3 times every 3 seconds Buzzes 2 times every 3 seconds

Blinking Flashes once every 3 seconds Buzzes 2 times every 3 seconds

Protection Buzzes 2 times every 3 seconds Model protection not set (model DIP switch not listed in the model table) Blinking

Blinking Buzzes 2 times every 3 seconds

HTW-MKH2(3) -V150-R4

HTW-MKH2(3) -V700-R3

HTW-MKH2(3) -V700-R4

Symbol Value MODEL:HTW-MKH2-V150-R4/MODEL:HTW-MKH2-150-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH2(3)-V250-R4/HTW-MKH2(3)-250-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value 0.56/0.6 1.79/2.05 2.60/3.05 17/47 43/46 0.79/0.82 2.06/2.23 2.95/3.15 20/47 46/47 0.85/0.94 2.65/2.91 3.50/3.70 26/51 52/52 1.00/1.15 2.90/3.05 4.00/4.10 29/51 52/52 Prated,c Prated,c Prated,h Pelec LWA Pelec LWA Pelec LWA Pelec LWA Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h MODEL:HTW-MKH2-V350-R3/HTW-MKH2-350-R3 Information to identify the model(s)to which the information relation: MODEL:HTW-MKH2-V350-R4/HTW-MKH2-350-R4 Information to identify the model(s)to which the information relation: Prated,c Prated,c Prated,h21 MODEL:

Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH2(3)-V700-R4/HTW-MKH2(3)-700-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

(3) -500-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value 1.05/1.07 3.25/3.58 4.30/4.35 50/91 59/59 Pelec LWA Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h22 MODEL:HTW-MKH2(3)-V150F-R4/HTW-MKH2(3)-150F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH2(3)-V250F-R4/HTW-MKH2(3)-250F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH2(3)-V500F-R4/HTW-MKH2(3)-500F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH2(3)-V800-R4/HTW-MKH2(3)-800-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol ValueMODEL:HTW-MKH2(3)-V800F-R4/HTW-MKH2(3)-800F-R4Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible)Cooling capacity(latent)Heating capacityTotal electric power inputSound power level(per speed setting, if applicable)contact details Unit

Symbol Value1.25/1.54.8/4.94.6/4.6592/11062/621.75/1.85.9/5.857.5/7.65102/11863/63Pelec LWA Pelec LWA

MODEL:HTW-MKH1-V150-R3/HTW-MKH1-150-R3Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible)Cooling capacity(latent)Heating capacityTotal electric power inputSound power level(per speed setting, if applicable)contact details Unit

Symbol ValueMODEL:HTW-MKH1-V150-R4/MODEL:HTW-MKH1-150-R4Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible)Cooling capacity(latent)Heating capacityTotal electric power inputSound power level(per speed setting, if applicable)contact details Unit

Symbol Value1.09/1.200.35/0.381.5/1.719/3547/470.51/0.581.36/1.581.97/2.2620/4052/52Pelec LWA Pelec LWA MODEL:HTW-MKH1-V250-R3/HTW-MKH1-250-R3Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible)Cooling capacity(latent)Heating capacityTotal electric power inputSound power level(per speed setting, if applicable)contact details Unit

Symbol ValueMODEL:HTW-MKH1-V250-R4/MODEL:HTW-MKH1-250-R4Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible)Cooling capacity(latent)Heating capacityTotal electric power inputSound power level(per speed setting, if applicable)contact details Unit

MODEL:HTW-MKH1-V350-R3/HTW-MKH1-350-R3 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH1-V350-R4/MODEL:HTW-MKH1-350-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH1-V500-R4/MODEL:HTW-MKH1-500-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value 4.08/4.26 0.86/1.03 5.29/5.42 98/124 65/65 1.21/1.51 4.39/4.65 6.22/6.53 99/117 65/65 Pelec LWA Pelec LWA Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h27 MODEL:HTW-MKH1-V150F-R4/HTW-MKH1-150F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH1-V250F-R4/HTW-MKH1-250F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value 4.75/4.76 1.46/1.46 6.80/6.94 105/118 66/66 1.89/1.75 5.41/4.91 7.7/6.86 105/110 65/65 Pelec LWA Pelec LWA Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h MODEL:HTW-MKH1-V350F-R4/HTW-MKH1-350F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value 0.97/1.12 2.73/2.87 2.81/2.88 30/51 52/52 1.08/1.21 3.41/3.71 3.27/3.55 52/92 59/61 Pelec LWA Pelec LWA Prated,c Prated,c Prated,h Prated,c Prated,c Prated,h28 (*) Conditions: ambient temperature 27°C DB/19°C WB; water inlet temperature 7°C; water outlet temperature 12°C; high speed. (**) Conditions: ambient temperature 20°C DB/15°C WB; water inlet temperature (2 pipe:45°C,4 pipe:65°C); water outlet temperature (2 pipe:40°C,4 pipe:55°C); high speed. (***) The sound pressure level in dB(A) indicates the value measured at 1 m away from an open air outlet.Sound pressure level is below 70 dB. (****) The parameters of the H1 based on the case that the back return air is completely blocked. MODEL:HTW-MKH1-V700F-R4/HTW-MKH1-700F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Symbol Value MODEL:HTW-MKH1-V800F-R4/HTW-MKH1-800F-R4 Information to identify the model(s)to which the information relation: Item Cooling capacity(sensible) Cooling capacity(latent) Heating capacity Total electric power input Sound power level(per speed setting, if applicable) contact details Unit

Controllo via cavo Uds. Uds. Kit Kit Uds. Uds. 1 Accessori

HTW- MKH2(3) -V150-R4

HTW-MKH2(3) -V700-R4

1.25/1.54.8/4.94.6/4.6592/11062/621.75/1.85.9/5.857.5/7.65102/11863/63Pelec LWA Pelec LWA