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In this part 2, we will update the error codes with symbols P, L, U, and H on Gree wall-mounted air conditioners. Let's follow along!
Gree wall-mounted air conditioner error code table – symbol P
The Gree wall-mounted air conditioner error code table – symbol P includes the following errors:
1. Error code PH
+ Error Name: High DC Power Source.
+ Cause and Solution: Measure voltage between L and N, if voltage is higher than 265 VAC, adjust voltage to normal level. If input voltage is normal, check voltage of capacitor C on the mainboard, if capacitor is normal, replace main board.
2. Error Code PL
+ Error Name: Low DC Power Source.
+ Cause and Solution: Measure voltage between L and N, if voltage is lower than 150 VAC, adjust voltage to normal level. If input voltage is normal, check voltage of capacitor C on the mainboard, if capacitor is normal, replace main board.
3. Error Code PO
+ Error Name: Lowest compressor frequency during test state.
+ Cause and Solution: Displayed for a few minutes during cooling or heating operation test.
4. Error Code P1
+ Error Name: Compressor frequency evaluation during test state.
+ Cause and Solution: Displayed while the unit operates in heating/cooling mode.
5. Error Code P2
+ Error Name: Highest compressor frequency during test state.
+ Cause and Solution: Displayed during maximum power heating/cooling operation test.
6. Error Code P3
+ Error Name: Medium compressor frequency during test state.
+ Cause and Solution: Displayed during medium power heating/cooling operation test.
7. Error Code P5
+ Error Name: Compressor overcurrent protection.
+ Cause and Solution: Check if power supply is stable.
8. Error Code PU
+ Error Name: Capacitor malfunction.
+ Cause and Solution: Check capacitor, if normal, replace main board.
9. Error Code P7
+ Error Name: Temperature sensor malfunction of heat sink plate.
+ Cause and Solution: Replace outdoor unit board.
10. Error Code P8
+ Error Name: Main board heat sink plate overheating.
+ Cause and Solution: High ambient temperature or improper heat sink connection.
Gree wall-mounted air conditioner error code table – symbol H
Gree wall-mounted air conditioner error code table – symbol H includes the following errors:
1. Error Code HO
+ Error Name: Compressor overload and overheat protection.
+ Cause and Solution: Abnormal outdoor fan motor or abnormal outdoor unit main board.
2. Error Code H3
+ Error Name: Compressor 1 overload protection.
+ Cause and Solution: Check OVC - COM wires for looseness. In normal state, wire resistance is below 1 Ohm.
3. Error Code H4
+ Error Name: Overload system.
+ Cause and Solution: Abnormal current or phase of compressor.
4. Error Code H6
+ Error Name: Outdoor fan motor not operating.
+ Cause and Solution: Check fan motor connectors; check fan motor connector on mainboard; faulty fan motor; faulty mainboard.
5. Error Code H7
+ Error Name: Compressor phase loss.
+ Cause and Solution: IPM protection, overcurrent protection, compressor phase deviation protection.
6. Error Code HC
+ Error Name: Power factor correction (PFC) protection.
+ Cause and Solution: Check for abnormal inductor coil and capacitor. Replace outdoor unit main board.
Gree wall-mounted air conditioner error code table – symbol L
Gree wall-mounted air conditioner error code table – symbol L includes the following errors:
1. Error Code L3
+ Error Name: Outdoor fan motor malfunction.
+ Cause: Faulty or jammed fan motor, or loose connection.
2. Error Code L9
+ Error Name: Power protection.
+ Cause: Device protection upon detecting high voltage.
3. Error Code LP
+ Error Name: Outdoor and indoor units with different capacities.
+ Cause: Outdoor and indoor units with different capacities.
4. Error Code LC
+ Error Name: Failure to start.
+ Cause: Check compressor and main board connections; compressor malfunction.
5. Error Code L3
+ Error Name: Unstable current in the system.
+ Cause: Replace outdoor unit main board.
Gree wall-mounted air conditioner error code table – symbol U
Gree wall-mounted air conditioner error code table – symbol U includes the following errors:
1. Error Code U1
+ Error Name: Compressor phase deviation error.
+ Cause: Replace outdoor unit main board.
2. Error Code U3
+ Error Name: Low DC power supply issue.
+ Cause: Unstable supplied voltage.
3. Error Code U7
+ Error Name: Power protection.
+ Cause: AC voltage lower than 175V; loose connection of 4-way valve; if 4-way valve is faulty, replace it.
4. Error Code U9
+ Error Name: Issue with indoor fan capacitor.
+ Cause: Replace outdoor unit main board.
5. Error Code U8
+ Error Name: Fault on the leakage current adjustment circuit of indoor fan motor.
+ Cause: Check indoor fan capacitor again; abnormal indoor unit main board.
Here is the updated Gree wall-mounted air conditioner error code table for 2023 with symbols P, L, U, and H. Some notable Gree wall-mounted air conditioner models currently available for reference when purchasing include: Gree Inverter 9000BTU GWC09PB-K3D0P4; Gree 9000BTU GWC09KB-K6N0C4; Gree Inverter 12000BTU GWC12PB-K3D0P4; Gree 12000BTU GWC12KC-K6N0C4; Gree Inverter GWC09CA-K3DNC2I – 9000BTU; Gree GWC12IC-K3N9B2J – 12.000BTU; Gree GWC09IB-K3N9B2I – 9000BTU; Gree Inverter 9000BTU GWC09FB-K6D9A1W…
