[Summary] Causes and ways to fix error codes Air conditioner, Gree air conditioner

Air conditioner code, Gree air conditioner that both users and repairers are interested. Our article will help you synthesize these error codes and point out the causes and remedies for some cases.

Error code regulates Gree Lomo line

F1, F2 : Error of environment temperature sensor of indoor unit

1. The machine will stop working when the required temperature is reached.
2. In cold or dry mode, the indoor unit fan operates, other components are not operating.
3. In heating mode, the whole machine is not working.
4. Wiring connecting temperature sensor to indoor and outdoor environment is poor.
5. Touching components.
6. Broken temperature environment sensor.
7. Broken mainboard.

H6 : Error of cooling fan motor.

1. Fan of outdoor unit, indoor unit, compressor does not work.
2. The air swing door stops at one position.
3. Loose cooling fan motor power cord.
4. Wire control motor fan cooling frame loosely.
5. The coldair propeller rotates unevenly or gets stuck.
6. Broken motor.

C5 : Error protecting Jumper on board.

1. The device does not run the control and the screen still works normally.
2. No protective jumper on the board.
3. Incorrect or tight jumper.
4. Broken Jumper.
5. Broken main board.

E5 : Error with overload protection.

1. In cold or dry mode, the indoor unit fan works, the unit is not working.
2. In heating mode, the whole machine is not working.
3. Voltage is unstable.
4. The supply voltage is too low and the load is too high.
5. Measure the current directly on the circuit. If it does not exceed the overcurrent protection value, check the board again.
6. Indoor and outdoor heat exchangers are too dirty, the wind direction is reversed and is blocked.
7. Fan is not running or speed is too low.
8. Compressor works abnormally (strange sound, oil leakage, high temperature shell, .).
9. Obstruction in the system.

E8 : Overload error

1. The system stopped working.
2. Indoor and outdoor heat exchangers are too dirty, the wind direction is reversed and is blocked.
3. Fan is not running or speed is too low.
4. Compressor works abnormally (strange sound, oil leakage, high temperature shell, .).
5. Obstruction in the system.
6. The temperature sensor of the mainboard feels wrong.

U8 : Error of condenser fan capacitor

1. Remote and mainboard receive signal but the air conditioner does not work.
2. Failure of a condenser fan or mainboard.

H3 : Compressor overload protection error.

1. Machine does not work.
2. Indoor and outdoor heat exchangers are too dirty, the wind direction is reversed and is blocked.
3. Fan is not running or speed is too low.
4. Compressor works abnormally (strange sound, oil leakage, high temperature shell, .).
5. Obstruction in the system.
6. High pressure switch
7. Gas leaks, causing too much protection for the compressor.

F0 : Failure to protect the system without gas.

1. The machine stops working.
2. Gas leak.
3. Unusual indoor staging sensor.
4. Incorrect installation location.
5. Unusual compressor.

Gree error code encoding table Change line

EE : The LED (heating) stops 3 seconds and flashes 15 times

1. Error on indoor unit board.
2. Replace mainboard indoor unit.

E2 : LED (running) stops for 3 seconds and flashes twice.

1. Defective protection against freezing.
2. Because the outdoor temperature of the outdoor unit is too low.

H4 : The LED (heating) stops 3 seconds and flashes 4 times.

1. System overload.
2. Check if the evaporator and the cooling system are dirty or blocked.

H6 : LED (running) stops 3 seconds and flashes 11 times.

1. The board does not receive signals from the indoor motor.
2. Check motor and mainboard connection.

F2 : The cooling (LED) LED stops for 3 seconds and blinks twice.

1. Error of temperature sensor of indoor unit pipe.
2. Check connection, measure sensor resistance value.

F1 : The cooling (LED) LED stops for 3 seconds and flashes once.

1. Error of environment temperature sensor of indoor unit.
2. Check connection, measure sensor resistance value.

UF : LED (cooling) and LED (heating) flashes 7 times at the same time.

1. Signal line error.
2. Replace mainboard indoor unit.

H3 : The LED (heating) stops for 3 seconds and flashes 3 times.

1. Compressor overload error
2. Check the connection status of the wire.

LC : The LED (heating) stops 3 seconds and flashes 11 times.

1. Error failed to start.
2. Check the resistor of the compressor and resistor next, check the outdoor unit board.

UH : LED (cooling) and LED (heating) flashes 8 times at the same time.

1. The board does not receive signals from the DC motor of the outdoor unit.
2. Check connecting DC motor and outdoor unit board.

E5 : LED (running) stops for 3 seconds and flashes 5 times.

1. Overcurrent protection error.
2. Check the power source.

U7 : The LED (heating) stops 3 seconds and flashes 20 times.

1. 4way valve is abnormal.
2. Replace valve 4 falls.

U1 : The LED (heating) stops for 3 seconds and flashes 13 times.

1. Deflection of compressors.
2. Replace the outdoor unit board.

H7 : The LED (heating) stops 3 seconds and flashes 7 times.

1. Out of sync.
2. Check compressor resistance, ground resistance, outdoor unit board.

U5 : The cooling (LED) LED stops for 3 seconds and blinks 13 times.

1. The current in the system is unstable.
2. Replace the outdoor unit board.

F3 : The (cooling) LED stops 3 seconds and flashes 3 times.

1. Outdoor temperature sensor error of outdoor unit.
2. Check connection, measure sensor resistance.

E4 : LED (running) stops for 3 seconds and flashes 4 times.

1. Error of high temperature sensor protection of compressor path.
2. Check connection, measure sensor resistance.

F5 : The (cooling) LED stops 3 seconds and flashes 5 times.

1. Error of the temperature sensor of the outdoor unit's path.
2. Check connection, measure sensor resistance.

F4 : The (cooling) LED stops 3 seconds and blinks 18 times.

1. Condenser temperature sensor error.
2. Check connection, measure sensor resistance.

P8 : The LED (heating) stops 3 seconds and flashes 19 times.

1. Overheating of the outdoor unit's main board heat sink error.
2. The outdoor unit ambient temperature is too high or the connection is wrong.

UU : LED (cooling) and LED (heating) flashes 11 times at the same time.

1. The DC current is too high.
2. Check AC and DC power adapter.

P7 : The LED (heating) stops for 3 seconds and blinks 18 times.

1. Error of temperature sensor of heat sink plate.
2. Replace the outdoor unit board.

FO : The cooling (LED) LED stops for 3 seconds and blinks 10 times.

1. Gas leak
2. Check and fix gas leak location.

PH : The (cooling) LED stops 3 seconds and blinks 11 times.

1. DC power is too high.
2. Unusual AC power supply.

PL : The LED (heating) stops for 3 seconds and flashes 21 times.

1. DC power is too low
2. Unusual AC power supply.

E6 : LED (running) stops for 3 seconds and flashes 6 times

1. Signal error
2. Check the signal wire connecting the outdoor unit and the indoor unit, check the mainboard of the outdoor unit and the indoor unit.

UA : LED (cooling) and LED (heating) flash 12 times at the same time.

1. Installation error, outdoor unit, abnormal indoor unit.
2. Outdoor unit is not suitable for indoor unit

Hopefully, our share of error codes, air conditioner, Gree air conditioner will help you. 

Isabella Humphrey

Update 28 July 2019