14SEER Unitary Products (Ducted)

NO.| LED1 (Yellow light)
| LED2 (Green light)| Questions| Answers
---|---|---|---|---
1| OFF| slow flash| Normal| Unit standby
2| OFF| ON| Normal| Unit is running
3| Flash 2 times for every 8s| slow flash| T3 Condenser Temperature sensor error| ① Make sure the coil temperature sensor is well connected;
② Replace the coil temperature sensor;
③ Repalce the main control PCB.
4| Flash 3 times for every 8s| slow flash| T4 Outdoor Ambient Temperature sensor error
5| Flash 8 times for every 8s| slow flash| T5 Discharge Temperature sensor error
6| Flash 6 times for every 8s| slow flash| Low pressure protection| ① Repair the leakage & charge refrigerant
② Remove the dirty and open the gas valve
③ Replace PCB or low pressure switch ④ Repair the heat exchanger
7| Flash 1 times for every 8s| slow flash| High pressure protection| ① Discharge the refrigerant & vacuum, recharge the refrigerant
② Remove the dirty and open the liquid valve
③ Replace PCB or high pressure switch ④ Repair the heat exchanger
8| Flash 9 times for every 8s| slow flash| T3 high temperature protection| ① Remove the dirty and open the liquid valve
② Discharge the refrigerant & vacuum, recharge the refrigerant
③ Replace PCB
9| Flash 5 times for every 8s| slow flash| T5 high temperature protection| ① Remove the dirty and open the gas valve
② Repair the leakage & charge refrigerant
③ Discharge the refrigerant & vacuum, recharge the refrigerant ④ Replace PCB

18SEER Inverter Unitary Products (Ducted)

temperature sensor is well connected;
② Replace the coil temperature sensor;
③ Repalce the main control PCB.
2| E5| T5 Discharge temperature sensor error
3| E6| T3 Condenser temperature sensor error
4| E10| EEPROM error| ① Power off and re-power on to see whether it is normal;
② If there is still abnormal replace the main control PCB.
5| E13| High pressure sensor error| ① Make sure the HLP Pressure sensor is well connected;
② Replace the HLP Pressure sensor;
③ Repalce the main control PCB.
6| P1| High pressure switch protection| ① Replace the High pressure switch;
② Remove dirty and keep the liquid pipe unobstructed
③ Discharge some refrigerant from the system ④ Discharge the refrigerant, vacuum, recharge refrigerant ⑤ Repalce the main control PCB.
7| P2| Low pressure switch protection| ① Replace the Low pressure switch;
② Remove dirty and keep the gas pipe unobstructed
③ Charge some refrigerant into the system ④ Repalce the main control PCB.
8| P6| IPM module protection| ① Power off and re-power on to see whether it is normal;
② If there is still abnormal replace the main control PCB.

MINI-SPLITS

poor connection for the power plug
② Poor connection for wiring terminals
③ Electric leakage for air conditioner ④ Model selection for air switch is improper ⑤ Malfunction of remote controller
2| Poor Cooling for Air Conditioner| ① Set temperature is improper
② Rotation speed is set too low
③ Filter is blocked ④ Installation position for unit is improper ⑤ Refrigerant is leaking ⑥Malfunction of capillary ⑦Malfunction of fan motor ⑧Malfunction of compressor
3| Fan Motor Can’t Operate| ① Wrong wire connection, or poor connection
② Wires for main switch are loose
③ Fan capacitor is damaged ④ Power voltage is a little low or high ⑤ Motor of outdoor unit is damaged
4| Compressor Can’t Operate| ① Wrong wire connection, or poor connection
② Thermostat is damaged
③ Capacitor of compressor is damaged ④ Power voltage is low or high ⑤ Coil of compressor is burnt ouRefrigerant is leaking ⑥ Cylinder of compressor is blocked
5| Air Conditioner is Leaking water| Drainage duct is blocked
6| Abnormal Sound and Vibration| ① When turn on or turn off the unit, the panel and other parts will expand and there’s abnormal sound
② When turn on or turn off the unit,there’s abnormal sound due to flow of refrigerant inside air conditioner
③ Foreign objects inside the unit or there’re parts touching together
inside the unit ④ Abnormal shake of compressor ⑤ Abnormal sound inside the compressor

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