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Gree Livo / All-Match with LIV outdoor Error Codes
Gree also builds units sold under other names, and many share this code style, but meanings can differ by model. Confirm against the manual for the unit you're on.
| Code | Meaning | What to check |
|---|---|---|
| C5 | Malfunction of jumper cap (indoor control panel). | Jumper cap missing, loose or damaged. |
| C4 | Malfunction of outdoor unit jumper cap. | Outdoor jumper cap not installed. |
| E6 | Communication malfunction between indoor and outdoor unit. | Interconnect wiring and connections. How to fix → |
| E1 | High pressure protection of system. | Dirty outdoor coil, fan, high ambient, overcharge, restriction. |
| E3 | Low pressure / low system pressure protection (compressor low pressure). | Low charge (leak), low pressure switch. How to fix → |
| E4 | High discharge temperature protection of compressor. | Low charge, restriction, discharge sensor. How to fix → |
| E5 | AC overcurrent protection. | Supply voltage, dirty coils, fan, compressor, overcharge. How to fix → |
| E7 | Mode conflict (multi-zone). | Indoor units set to cooling and heating at the same time. |
| E8 | High temperature prevention protection. | Airflow and system pressures. |
| EE | Malfunction of EEPROM (outdoor). | Outdoor main board. |
| F0 | Refrigerant insufficient / refrigerant cut-off protection. | Leak search, closed valves, restriction. How to fix → |
| Fo | Refrigerant recovery mode. | Shown when a tech runs the pump-down/recovery function. |
| F1 | Indoor ambient temperature sensor open or shorted. | Measure the sensor; check connector. How to fix → |
| F2 | Indoor evaporator temperature sensor open or shorted. | Measure the sensor; check connector. How to fix → |
| F3 | Outdoor ambient temperature sensor open or shorted. | Measure the sensor; check connector. How to fix → |
| F4 | Outdoor condenser temperature sensor open or shorted. | Measure the sensor; check connector. How to fix → |
| F5 | Outdoor discharge temperature sensor open or shorted. | Measure the sensor; check connector. How to fix → |
| b5 | Liquid valve temperature sensor open or shorted. | How to fix → |
| b7 | Gas valve temperature sensor open or shorted. | How to fix → |
| H3 | Overload protection of compressor. | Low or high charge, compressor overload, restriction. |
| H4 | System is abnormal (high temperature / high power protection). | Airflow and system pressures. |
| H5 | IPM protection. | Supply voltage, outdoor airflow, inverter board, compressor. How to fix → |
| H6 | No feedback from indoor unit fan motor. | Fan blocked, motor wiring, motor, indoor board. |
| H7 | Desynchronizing of compressor. | Compressor wiring, compressor, drive board. How to fix → |
| HC | PFC protection. | Supply voltage stability, wiring, dirty coils. How to fix → |
| HE | Demagnetization protection of compressor. | Outdoor board, compressor. |
| L3 / LA | Malfunction of outdoor fan / DC motor (LA = fan 2 on dual-fan units). | Coil or fan blocked, motor wiring, motor, outdoor board. |
| L1 | Malfunction of humidity sensor. | |
| L9 | High power protection. | Airflow and system pressures. |
| Lc | Start-up failed. | Compressor wiring, compressor, drive board. How to fix → |
| Ld | Lost phase (compressor). | Compressor wiring, outdoor board, compressor. How to fix → |
| LP | Indoor and outdoor units can't be matched. | Confirm an approved indoor/outdoor match. |
| oE | Undefined outdoor unit error. | Outdoor ambient outside operating range, compressor wiring, outdoor board. |
| P5 | Over-phase current protection of compressor. | |
| P6 | Communication malfunction between drive board and main board. | Board-to-board connection; drive or main board. How to fix → |
| P7 | Module temperature sensor circuit malfunction. | Replace the outdoor control board. How to fix → |
| P8 | Module overheating protection. | Outdoor airflow, dirty condenser, IPM mounting. How to fix → |
| PF | Ambient temperature sensor of drive board malfunction. | How to fix → |
| PH | DC bus voltage too high. | Measure L to N at the outdoor terminal block; high input voltage. How to fix → |
| PL | DC bus voltage too low. | Measure L to N at the outdoor terminal block; low input voltage. How to fix → |
| PU | Charging malfunction of capacitor (drive board). | How to fix → |
| U1 | Phase current detection circuit malfunction. | Outdoor control board. |
| U2 | Lost phase protection of compressor. | Compressor wiring, outdoor board, compressor. How to fix → |
| U3 | DC bus voltage drop malfunction. | Unstable supply voltage. How to fix → |
| U5 | Current detection malfunction of unit. | Low charge or outdoor board. How to fix → |
| U7 | 4-way valve is abnormal. | Voltage to the coil, wiring, valve. |
| U8 | Zero-crossing signal malfunction of indoor unit. | Supply power, indoor main board. |
| U9 | Zero-crossing malfunction of outdoor unit. | Outdoor control board. |
How to read the codes
- E2 (evaporator anti-freezing), E9 (anti cold air) and the defrost indication are status codes during normal operation, not faults.
- Write the code down before resetting power; a reset clears it.
- Codes starting with P and U are mostly inverter drive faults; C, L and b codes are boards, fans and sensors.
Codes point to a circuit, not a part. Test before replacing boards or sensors. Inverter boards hold a dangerous charge after power-off; wait and verify DC bus voltage is gone before touching them. Refrigerant work requires EPA 608 certification.
Source: Gree All-Match Floor Standing R32 Service Manual (LIV outdoor), 9.1 Error Code List. The "meaning" column follows the manufacturer's wording; "what to check" is our field summary. Always go by the label on the furnace you're working on.
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