Gree Air Conditioners Error Codes

 

1. The wiring terminal between indoor evaporator temperature sensor and controller is loosened or poorly contacted;
2. There’s short circuit due to the trip-over of the parts on controller;
3. Indoor evaporator temperature sensor is damaged
4. Main board is broken.

Gree AC Error Code: F3

Malfunction Name: Outdoor ambient temperature sensor is open/ short-circuited

A/C Status: The unit will stop operation as it reaches the temperature point. During cooling and drying operation, compressor stops and indoor fan operates; During heating operation, the complete unit stops operation.

Possible Causes:

1. The wiring terminal between outdoor ambient temperature sensor and controller is loosened or poorly contacted;
2. There’s short circuit due to the trip-over of the parts on controller;
3. Outdoor ambient temperature sensor is damaged
4. Main board is broken.

Gree AC Error Code: H6 

Malfunction Name: PG motor (indoor fan motor) does not operate

A/C Status: Indoor fan, outdoor fan, compressor and electric heat tube stop operation. 2 minutes later, 4-way valve stops; horizontal louver stops at the current position.

Possible Causes:

1. The feedback terminal of PG motor is not connected tightly.
2. The control terminal of PG motor is not connected tightly.
3. Fan blade rotates roughly due to improper installation.
4. Motor is not installed properly and tightly.
5. Motor is damaged.
6. Controller is damaged

Gree AC Error Code: C5

Malfunction Name: Malfunction protection of jumper cap

A/C Status: Operation of remote controller or control panel is available, but the unit won’t act

Possible Causes: There’s no jumper cap on the controller. Jumper cap is not inserted properly and tightly. Jumper cap is damaged. Controller is damaged.

Gree AC Error Code: U8 

Malfunction Name: PG motor (indoor fan) circuit malfunction by zero cross detection

A/C Status: Operation of remote controller or control panel is available, but the unit won’t act

Possible Causes: Controller is damaged.

Gree AC Error Code: E2 

Malfunction Name: Antifreezing protection

A/C Status: During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates.

Possible Causes:

1. Poor air-return in indoor unit;
2. Abnormal fan speed;
3. Dirty evaporator;
4. System is normal but the indoor tube temperature sensor is abnormal, or the tube temperature sensor is not connected well.

Gree AC Error Code: E3

Malfunction Name: Low pressure protection of compressor

A/C Status: The complete unit stops

Possible Causes:

1. The main board and display panel are not connected well.
2. The LPP terminal on the main board is not connected well, with the high pressure switch on the complete unit.
3. The wiring of the high pressure switch is loosened. High pressure switch is damaged or poorly contacted.
4. Insufficient or leaking out refrigerant.
5. The LPP input is at high level.

Gree AC Error Code:  E1

Malfunction Name: High pressure protection of system

A/C Status: During cooling and drying operation, except indoor fan operates, all loads stop operation. During heating operation, the complete unit stops

Possible Causes:

1. Refrigerant was superabundant;
2. Poor heat exchange (including filth blockage of heat exchanger and bad radiating environment ); Ambient temperature is too high.

Gree AC Error Code:  E4

Malfunction Name: High discharge temperature protection of compressor

A/C Status: During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating operation, all loads stop

Possible Causes: Please refer to the malfunction analysis (discharge protection, overload).

Gree AC Error Code: E5  

Malfunction Name: Overcurrent protection

A/C Status: During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates. During heating operation, all loads stop

Possible Causes:

1. Supply voltage is unstable;
2. Supply voltage is too low and load is too high;
3. Evaporator is dirty.

Gree AC Error Code: E6

Malfunction Name: Communication Malfunction

A/C Status: During cooling operation, compressor stops while indoor fan motor operates. During heating operation, the complete unit stops

Possible Causes: Refer to the corresponding malfunction analysis

Gree AC Error Code: E8

Malfunction Name: High temperature resistant protection

A/C Status: During cooling operation: compressor will stop while indoor fan will operate. During heating operation, the complete unit stops

Possible Causes: Refer to the malfunction analysis (overload, high temperature resistant)

Gree AC Error Code: F4

Malfunction Name: Outdoor condenser temperature sensor is open/short circuited

A/C Status: During cooling and drying operation, compressor stops while indoor fan will operate; During heating operation, the complete unit will stop operation.

Possible Causes: Outdoor temperature sensor hasn’t been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)

Gree AC Error Code: F5

Malfunction Name: Outdoor discharge temperature sensor is open/short circuited

A/C Status: During cooling and drying operation, compressor will sop after operating for about 3 mins, while indoor fan will operate; During heating operation, the complete unit will stop after operating for about 3 mins

Possible Causes:

1. Outdoor temperature sensor hasn’t been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)
2. 2.The head of temperature sensor hasn’t been inserted into the copper tube

Gree AC Error Code: F6  

Malfunction Name: Limit/decrease frequency due to overload

A/C Status: All loads operate normally, while operation frequency for compressor is decreased

Possible Causes: Refer to the malfunction analysis (overload, high temperature resistant)

Gree AC Error Code: F8

Malfunction Name: Decrease frequency due to overcurrent

A/C Status: All loads operate normally, while operation frequency for compressor is decreased

Possible Causes: The input supply voltage is too low; System pressure is too high and overload

Gree AC Error Code: F9  

Malfunction Name: Decrease frequency due to high air discharge

A/C Status: All loads operate normally, while operation frequency for compressor is decreased

Possible Causes:

1. Overload or temperature is too high;
2. Refrigerant is insufficient;
3. Malfunction of electric expansion valve (EKV)

Gree AC Error Code:  PH

Malfunction Name: Voltage for DC bus-bar is too high

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation.

Possible Causes:

1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher than 265VAC, turn on the unit after the supply voltage is increased to the normal range.
2. If the AC input is normal, measure the voltage of electrolytic capacitor C on control panel (AP1), if it’s normal, there’s malfunction for the circuit, please replace the control panel (AP1)

Gree AC Error Code:  U5

Malfunction Name: Malfunction of complete unit’s current detection

A/C Status: During cooling and drying operation, the compressor will stop while indoor fan will operate; During heating operating, the complete unit will stop operation.

Possible Causes: There’s circuit malfunction on outdoor unit’s control panel AP1, please replace the outdoor unit’s control panel AP1.

Gree AC Error Code: P5  

Malfunction Name: Overcurrent protection of phase current for compressor

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation

Possible Causes: Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.

Gree AC Error Code: H1 

Malfunction Name: Defrosting

A/C Status: Defrosting will occur in heating mode. Compressor will operate while indoor fan will stop operation.

Possible Causes: It’s the normal state

Gree AC Error Code: H2

Malfunction Name: Static dedusting protection

Gree AC Error Code: H3

Malfunction Name: Overload protection for compressor

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation

Possible Causes:

1. Wiring terminal OVC-COMP is loosened. In normal state, the resistance for this terminal should be less than 1 ohm.
2. Refer to the malfunction analysis ( discharge protection, overload)

Gree AC Error Code:  H4

Malfunction Name: System is abnormal

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation.

Possible Causes: Refer to the malfunction analysis (overload, high temperature resistant)

Gree AC Error Code: H5  

Malfunction Name: IPM protection

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation.

Possible Causes: Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.

Gree AC Error Code: HC

Malfunction Name: PFC protection

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation.

Possible Causes: Refer to the malfunction analysis

Gree AC Error Code: H7  

Malfunction Name: Desynchronizing of compressor

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation.

Possible Causes: Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.

Gree AC Error Code: H0  

Malfunction Name: Decrease frequency due to high temperature resistant during heating operation

A/C Status: All loads operate normally, while operation frequency for compressor is decreased

Possible Causes: Refer to the malfunction analysis (overload, high temperature resistant)

Gree AC Error Code: Lc  

Malfunction Name: Failure start-up

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop operation

Possible Causes: Refer to the malfunction analysis

Gree AC Error Code: U1  

Malfunction Name: Malfunction of phase current detection circuit for compressor

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes: Replace outdoor control panel AP1

Gree AC Error Code: EE 

Malfunction Name: EEPROM malfunction

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes: Replace outdoor control panel AP1

Gree AC Error Code: PU  

Malfunction Name: Charging malfunction of capacitor

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes: Refer to the part three—charging malfunction analysis of capacitor

Gree AC Error Code: P7

Malfunction Name: Malfunction of module temperature sensor circuit

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes: Replace outdoor control panel AP1

Gree AC Error Code: P8  

Malfunction Name: Module high temperature protection

A/C Status: During cooling operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes: After the complete unit is de-energized for 20mins, check whether the thermal grease on IPM Module of outdoor control panel AP1 is sufficient and whether the radiator is inserted tightly. If it’s no use, please replace control panel AP1.

Gree AC Error Code: U3

Malfunction Name: Malfunction of voltage dropping for DC bus-bar

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes: Supply voltage is unstable

Gree AC Error Code: PL 

Malfunction Name: Voltage of DC bus-bar is too low

A/C Status: During cooling and drying operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop

Possible Causes:

1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher than 150VAC, turn on the unit after the supply voltage is increased to the normal range.
2. If the AC input is normal, measure the voltage of electrolytic capacitor C on control panel (AP1), if it’s normal, there’s malfunction for the circuit, please replace the control panel (AP1)

Gree AC Error Code: EU  

Malfunction Name: Limit/decrease frequency due to high temperature of module

A/C Status: All loads operate normally, while operation frequency for compressor is decreased

Possible Causes: Discharging after the complete unit is de-energized for 20mins, check whether the thermal grease on IPM Module of outdoor control panel AP1 is sufficient and whether the radiator is inserted tightly. If it’s no use, please replace control panel AP1.

Gree AC Error Code: U7  

Malfunction Name: The four-way valve is abnormal

A/C Status: If this malfunction occurs during heating operation, the complete unit will stop operation

Possible Causes:

1. Supply voltage is lower than AC175V;
2. Wiring terminal 4V is loosened or broken;
3. 4V is damaged, please replace 4V

Gree AC Error Code: U9

Malfunction Name: Zero- crossing malfunction of outdoor unit

A/C Status: During cooling operation, compressor will stop while indoor fan will operate; during heating, the complete unit will stop operation.

Possible Causes: Replace outdoor control panel AP1

Gree AC Error Code: FH 

Malfunction Name: Limit/decrease frequency due to antifreezing

A/C Status: All loads operate normally, while operation frequency for compressor is decreased

Possible Causes: Poor air-return in indoor unit or fan speed is too low

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Gree Cassette AC Error Codes

In case of malfunction (such as bad smell), turn off the power immediately and contact the  service center.* Do not repair the air conditioner by yourself. Incorrect repairs may cause fire. Please contact the service center.* The appliance should not be used by children without supervision.

Once a failure occurs with the indoor unit in operation, the green unit LED flashes at intervals of 0.5 seconds.
The fault code is deduced from the number of times the green LED flashes, blocking unit operation. Between one flash cycle and the next one, a pause of 5 seconds elapses.

 

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Gree Cozy AC Error Codes  

 

E1: High pressure protection of system

E2: Antifreezing protection

F0: In defect of refrigerant

E4: High discharge temperature protection of compressor

E5: Overcurrent protection

E6: Communication Malfunction

E8: High temperature resistant protection

EE: EEPROM malfunction

EU: Limit/ decrease frequency due to high temperature of module

C5: Malfunction protection of jumper cap

Fo: Gathering refrigerant-Nominal cooling mode

F1: Indoor ambient temperature sensor is open/short circuited

F2: Indoor evaporator temperature sensor is open/short circuited

F3: Outdoor ambient temperature sensor is open/short circuited

F4: Outdoor condenser temperature sensor is open/short circuited

F5: Outdoor discharge temperature sensor is open/short circuited

F6: Limit/ decrease frequency due to overload

F8: Decrease frequency due to overcurrent

F9: Decrease frequency due to high air discharge

FH: Limit/ decrease frequency due to antifreezing

PH: Voltage for DC bus-bar is too high

PL: Voltage of DC bus-bar is too low

P0: Compressor Min frequence in test state

P1: Compressor rated frequence in test state

P2: Compressor maximum frequence in test state

P3: Compressor intermediate frequence in test state

P5: Overcurrent protection of phase current for compressor

PU: Charging malfunction of capacitor

P7: Malfunction of module temperature sensor circuit

P8: Module high temperature protection

H0: Decrease frequency due to high temperature resistant during heating operation

H2: Static dedusting protection

H3: Overload protection for compressor

H4: System is abnormal

H5: IPM protection

H5: Module temperature is too high

H6: Internal motor (fan motor) do not operate

H7: Desynchronizing of compressor

HC: PFC protection

L3: Outdoor DC fan motor malfunction

L9: power protection

LP: Indoor unit and outdoor unit doesn’t match

LC: Failure startup

U1: Malfunction of phase current detection circuit for compressor

U3: Malfunction of voltage dropping for DC bus-bar

U5: Malfunction of complete units current detection

U7: The four-way valve is abnormal

U9: Zerocrossing malfunction of outdoor unit

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Gree Ductless Heat Pump Error Codes

Models: GWH09KF-A3DNB1A / GWH12KF-A3DNB1A/ GWH09KF-D3DNB1C/ GWH12KF-D3DNB1C/ GWH18KG-D3DNB1C/ GWH24KG-D3DNB1A

Error Codes	Possible Causes
C5	Indoor Configuration Jumper/Missing Configuration Jumper on Indoor Control Board
LP	Indoor/Outdoor Mismatch/Indoor and Outdoor Units Do Not Match
E5	High Current Protection/Power Supply is not Stable and Voltage Range is too Large
E6	Communication Error/Mis-wired or Communication Failure
F1	Indoor Air Temp. Thermistor/Bad Connection, or Indoor Air Sensor Failure
F2	Indoor Coil Temp. Thermistor/Bad Connection, or Indoor Coil Sensor Failure
F3	Outdoor Air Temp. Thermistor/Bad Connection, or Outdoor Ambient Sensor Failure
F4	Outdoor Coil Temp. Thermistor/Bad Connection, or Outdoor Coil Sensor Failure
F5	Compressor Discharge Temp. Thermistor/Bad Connection, or Discharge Sensor Failure
H3	Compressor Overload Protection/Low Refrigerant Charge
H5	IPM Module Protection/IPM Module Temperature Too High
H6	Indoor Fan Malfunction/Indoor Fan Stopped or Running too Slow
H7	Compressor Synchronism/High Pressure, Low Voltage, or Bad Connections
U7	4-Way Valve Malfunction/Bad Connection, Solenoid Failure, or Valve Malfunction.

Gree Air Conditioners Troubleshooting

*Problem

Water leaking from the indoor unit into the room.

Cause/Solution

Cause: While it is normal for the system to generate condensate water in coolingmode, it is designed to drain this water via a condensate drain system to a safe location.

Solution: If water is leaking into the room, it may indicate one of the following

• The indoor unit is not level right to left. Level indoor unit.
• The condensate drain pipe is restricted or plugged.All restrictions must be removed to allow continuous drainage by gravity.
• If problem persists,contact a qualified service professional for assistance

*Problem

Wireless remote controller does not work.

Cause/Solution

Cause: There are a number of possible reasons

Solution: Check the following:

• The batteries might be low. Change the batteries.
• The remote controller must be within 25 ft. (7.5 m) with no obstructions of the indoor unit. If remote controller needs to be replaced,contact a qualified service professional for assistance. In the meantime, use the Aux Button to operate the system.

*Problem

The unit will not deliver air

Cause/Solution

Cause: There are a number of system functions that will prevent air flow.

Solution: Check for the following:

• In heating mode, the indoor fan may not start for three minutes if the room temperature is very low.This is to prevent blowing cold air.
• In heat mode, if the outdoor temperature is low and humidity is high, the system may need to defrost for up to 10 minutes before beginning a heating cycle.
• In dry mode, the indoor fan may stop for up to three minutes during the compressor off delay.
• Otherwise, you should contact a qualified service professional for assistance

*Problem

Moisture orcondensation on the discharge air louvers or outlet vents.

Cause/Solution

Cause: It is normal for the system to develop condensation or moisture on the discharge air louvers when cooling warm humid air for a long period of time.

Solution: The condensation or moisture will disappear as the system cools and dehumidifies the room space.

*Problem

System does not restart

Cause/Solution

Cause: The system has a built-in three-minute delay to prevent short and/or rapid cycling of the compressor.

Solution: Wait three minutes for the protection delay to expire.

*Problem

Indoor unit emits unpleasant odor when started

Cause/Solution

Cause: Typically unpleasant odors are the result of mold or mildew forming on the coil surfaces or the air filter.

Solution: Wash indoor air filter in warm water with mild cleaner. If odors persist, contact a qualified service professional to clean the coil surfaces.

*Problem

You hear a“water flowing”sound

Cause/Solution

Cause: It is normal for the system to make“water flowing”or“gurgling”sounds from refrigerant pressures equalizing when the compressor starts and stops.

Solution: The noises should discontinue as the refrigerant system equalizes after two or three minute.

*Problem

A thin fog or vapor coming out of the indoor unit when system is running

Cause/Solution

Cause: It is normal for the system to emit a slight fog or water vapor when cooling extremely humid warm air.

Solution: The fog or water vapor will disappear as the system cools and dehumidifies the room space

*Problem

The system will not run

Cause/Solution

Cause: There are a number of situations that will prevent the system from running.

Solution: Check for the following:

• Circuit breaker is “tripped” or “turned off.”
• Power button of remote is not turned on.
• Batteries in the remote controller are low.
• Remote controller is in sleep mode or timer mode.
• Otherwise,contact a qualified service professional for assistance

*Problem

Wireless remote controller does not work

Cause/Solution

Cause: There are a number of possible reasons

Solution: Check the following:

• The batteries might be low. Change the batteries.
• The remote controller must be within 25 ft. (7.5 m) with no obstructions of the indoor unit. If remote controller needs to be replaced,contact a qualified service professional for assistance. In the meantime, use the Aux Button to operate the system.

*Problem

Water leaking from the indoor unit into the room

Cause/Solution

Cause: While it is normal for the system to generate condensate water in cooling mode, it is designed to drain this water via a condensate drain system to a safe location.

Solution: If water is leaking into the room, it may indicate one of the following.

• The indoor unit is not level right to left. Level indoor unit.
• The condensate drain pipe is restricted or plugged.All restrictions must be removed to allow continuous drainage by gravity.
• If problem persists, contact a qualified service professional for assistance

 

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