After Sales Q&A

15SEER Unitary Products

NO. Display content State description
1 No alarm: Green light flashes Red light off Green light slow flashes Normal standby
Green light normally on Normal operation
2 System alarm: Red light on Green light flashes T3 Temperature sensor fault Green light flashes 2 times every 8 seconds
T4 Temperature sensor fault Green light flashes 9 times every 8 seconds
T5 Temperature sensor fault Green light flashes 8 times every 8 seconds
Low pressure alarm Green light flashes 6 times every 8 seconds
High pressure alarm Green light flashes 1 times every 8 seconds
T3 High temperature protection Green light flashes 10 times every 8 seconds
High exhaust temperature protection Green light flashes 5 times every 8 seconds
DC fan is not connected Green light flashes 7 times every 8 seconds

14SEER Unitary Products

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

NO. Error code Questions Answers
1 E4 T4 Outdoor ambient 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.
2 E5 ON
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.
NO. Questions Answers
1 Air Conditioner Can't be Started Up
  1. No power for air conditioner, or 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
  6. Malfunction of capillary
  7. Malfunction of fan motor
  8. Malfunction 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