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Air Conditioner Service Manual PURE ON/OFF type air conditioner Service Manual Models WP13C1DB1 / HP13C1MR13 WP13C2DB1 / HP13C2MR13 WP18C2DB1 / HP18C2MR13 WP24C2DB1 / HP24C2MR13 WP36C2DB1 / HP36C2MR13 • The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments •...
Air Conditioner Service Manual Part Ⅰ Technical Information 1. Important Notice This service manual is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair the appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.
Air Conditioner OPERATION DETAILS Remote controller ON/OFF button To switch the conditioner on and off. ECO button In cooling mode,press this button ,the temperature will increase 2 on the base of setting temperature: In heating mode, press this button, the temperature will decrease 2 on the base of setting temperature.
Air Conditioner Service Manual 4.2 Electronic controller RT ------ Room Temperature. IPT ----- Indoor Pipe (Coil) Temperature. ST ----- Indoor Setting Temperature. OPT --- Outdoor Pipe Temperature. CRT --- Compensated Room Temperature. IDU --- Indoor unit ODU --- Outdoor unit. Note: When AC finishing installation, because of the air ventilation and the distance of temperature test sensor to different location of the house, the temperature for IDU PCB control need compensation.
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Air Conditioner Service Manual 4.2.2.4. When ODU failure or stops for protection, IDU works as preset. 4.2.2.5. Anti-frosting protection While condition a), b) matched, the AC unit transferred to anti-frosting protection. a). After the compressor continual works for 6 minutes, and tested IPT≤0℃ for 3 minutes continuously. b).
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Air Conditioner Service Manual 4.2.5 Timer The unit has times control, when the unit meet the timer preset, it will be switched on or off automatically. 4.2.5.1 TIMER ON 1). TIMER ON can be set only when the air conditioner is OFF. 2).
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Air Conditioner Service Manual Function effective on Cooling, Heating, Fan and Auto modes, and fan speed operates on highest. 4.2.10 Calibration Test Mode: Within 3 min while indoor unit switch on, and set the unit as: 1) Cooling mode. 2) set temperature to 30℃. 3) Mid-fan speed.
Air Conditioner Service Manual PART Ⅱ Installation and Maintenance 1. Notes for installation and maintenance Safety Precautions Important! Please read the safety of precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance. Please follow the instructions bellow. ●...
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Air Conditioner Service Manual 6) Make sure no foreign objects are left in the unit after finishing installation. Improper installation may lead to fire hazard, explosion, electric shock or injury. Safety precautions for Installing and Relocating the unit. To ensure safety, please be mindful of the following precautions. Warnings When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
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Air Conditioner Service Manual install your air conditioner in a room with an appropriate area and use it correctly. Compared with ordinary refrigerants, Refrigerants R32 & R290 are environmentally friendly and do not destroy the ozone sphere and that their values of greenhouse effect are also very low. 2) R32/R290 air conditioner installation area requirement m1=(4m )×LFL, m2=(26m...
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Air Conditioner Service Manual Caution: ⚫ Please contact the nearest after-sale service center when maintenance is necessary. At the time of maintenance, the maintenance personnel must strictly comply with the Operation Manual provided by the corresponding manufacturer and any non-professional is prohibited to maintain the air conditioner. ⚫...
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Air Conditioner Service Manual combustible and/or explosive environment. ⚫ If the indoor unit suffers refrigerant leak during the installation, it is necessary to immediately turn off the valve of the outdoor unit and all the personnel should go out till the refrigerant leaks completely for 15 minutes.
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Air Conditioner Service Manual product with radiation in the room is powered off. ⚫ The maintenance area should be equipped with a drying powder or carbon dioxide fire extinguisher and that such fire extinguisher can work. (2) Inspection of maintenance equipment ⚫...
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Air Conditioner Service Manual labeled clearly. There should be a certain safety distance between the two areas. The maintenance location should be equipped with ventilating and air-exhausting equipment to prevent the refrigerant gas from aggregating. ⚫ It is necessary to provide some relevant instruments such as combustible refrigerant leak detector and have a leak detecting instrument management system.
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Air Conditioner Service Manual Warning Before doing the trial operation after finishing the maintenance, it is a must to use a practical leak detector to inspect the leakage and reliability of ground connection in order to ensure that no refrigerant leakage and reliable ground connection.
Air Conditioner Service Manual picture. 2.3 Position 2.4 Electricity and wiring Indoor unit Safety precaution ⚫ Install the indoor unit level on a strong wall that 1) Must follow the electric safety regulations when is not subject to vibrations installing the unit. ⚫...
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Air Conditioner Service Manual The hole must slope downwards towards the 9K(770X) exterior. Note: Keep the drain pipe down towards the direction of the wall hole, otherwise leakage may occur. 2.5.3 Electrical connections---Indoor unit 1).Lift the front panel. 2).Take off the cover as indicated in the picture (by 12K(770X) removing a screw or by breaking the hooks).
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Air Conditioner Service Manual Wrap the insulation material around the connecting portion. ⚫ Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap. Shape the connection pipe 2.5.4 Connecting the pipes.
Air Conditioner Service Manual Pay attention that water is drained in a suitable place. ⚫ Insert the pipe connection into the relative slot. ⚫ Press to join the pipe connection to the base. Electronic connections 1. Take the cover away. 2.
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Air Conditioner Service Manual pipe. service port nut protection caps...
Air Conditioner Service Manual 2.8 Final test 2.7 Vacuum and gas leakage test 1 Preparation of test operation. 1. Use vacuum Pump ⚫ The client approves the air conditioner 1) Air and humidity left inside the refrigerant circuit installation. can cause compressor malfunction. After having ⚫...
Air Conditioner Service Manual 3. Maintenance 3.1 Failure code Code Reason Remark IDU Room Temperature sensor failure. IDU sensor and PCB. (IDU RT failure) IDU Coil temperature sensor failure.(IDU IDU sensor and PCB. IPT failure) Gas not enough Please check the pressure in cooling System protection For the high/low pressure valve model IDU PG Fan motor / DC fan motor works...
Air Conditioner Service Manual 3.2 Trouble shooting 3.2.1 E1, E2 ---IDU Room temperature sensor and/or coil temperature sensor failure. Start Display E1or E2 Is the sensor well Re-connect connected to PCB E1/E2 disappear? Multi-meter check the Replace the sensor sensor, is it open or short circuit? The malfunction eliminated?
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Air Conditioner Service Manual 3.2.2 E6 --- IDU ventilation failure (PG and DC fan motor only) Start Display E6 Turn the fan blades by hand while power-off Adjust the motor and blade Can the fan blades run assembly so that rotor can smoothly? run smoothly.
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Air Conditioner Service Manual 3.2.3 P7---Overheating protection on Cooling mode ℃ On heating mode, when IDU evaporator coil temperature IPT≥62 , ODU PCB will switch off outdoor unit and show P7 failure code. Display P7 ODU fan motor Fan motor Replace fan motor works normal? broken?
Air Conditioner Service Manual 4. Disassembly IDU & ODU 4.1. IDU Disassembly Steps Reference photo 1. Before disassembly The orginal status. 2. Disassembly front panel, display board and WIFI module. 显示盒 Display box A. Open front panel. B. Remove one screw and take the displ box out from the panel.
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Air Conditioner Service Manual 4. Remove the electric control box cover Unfix one screw on the cover of electric 固 box, and remove the cover. 定 螺 screw 钉 5. Remove the filter Push the filter upwards a little, you can take it out from unit.
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Air Conditioner Service Manual 7. Disassembly the electric control box. 电控盒 Electric control box A. Remove the RT & IPT out from evaporator; B. Unscrew all the earth ground wirings on the evaporator. C. Take all the connectors out from PCB. D.
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Air Conditioner Service Manual 9. Disassembly the evaporator screws Screws + motor 螺 钉/卡扣 螺钉 A. Unfix 2 screws of left side shown as cover picture. B. Unfix 2 screws of right side on motor cover/right support plate. C. Take the evaporator out from unit by uplifting the IUPUT/OUTPUT pipes slightly.
Air Conditioner Service Manual 4.2 ODU Assembly Step Reference picture step1:Remove the PCB Cover , valve Cover and top cover 1). Unfix one screw on the PCB cover, you can take the cover out from unit. 2). Unfix one screw on the valve cover, you can take it out easily.
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Air Conditioner Service Manual ODU middle separate plate and base plate, uplift front panel you can take it out from unit. step3:Disassemble the Left and Right plate. Unfix screws btw Right Plate and the Electric Box assembly, Valve Plate , Base Plate, then you can take the Right plate out.
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Air Conditioner Service Manual step4:Disassemble the Axis Fan Blade Unscrew the fan blade nut, and take the blade out. step5:Disassemble the electric box Unfix screw btw Electric Box and motor supporter etc. loosen the wiring clamp, then you can take the control box out.
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Air Conditioner Service Manual step7:Disassemble the Partition plate Unfix the screw btw Partition plate and unit, and take it out step8:Disassemble the 2 and 3-way valve Unfix screw btw Valve plate and base, you can take the 2-way and 3-way valve out by welding.
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Air Conditioner Service Manual step10:Disassemble the compressor. Unscrew the nuts and take the compressor out. step11:Remove the fan motor and fan supporter. Unfix screws btw fan motor with supporter, and supporter with base plate. Note: Pay attention to the motor wiring, it can’t be taken out by force.
Air Conditioner Service Manual Appendix 3 Pipes Flaring Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. A. Cut the pipes and the cable. 1) Use the piping kit accessory or the pipes purchased locally.
Air Conditioner Service Manual Appendix 4 THERMISTOR TEMPERATURE CHARACTERISTICS 1). Indoor unit and outdoor exchange temperature and outside air temperature sensor temperature characteristics TEMP. TEMP. TEMP. Resistance Voltage of Resistance Voltage of Resistance Voltage of (k Ohm) resistance (k Ohm) resistance (k Ohm) resistance...
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Air Conditioner Service Manual Resistance at 25℃: 5 kΩ. TH1: indoor room temperature sensor and outside air temperature sensor TH2: indoor exchange temperature sensor and outside exchange temperature sensor Before measuring resistance, disconnect connectors as shown above. 1) Outdoor unit sensor temperature characteristics TEMP.
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