Gree error code H3
What it means
Compressor overload protection.
Possible causes
Compressor overheating Refrigerant charge abnormal Overload protector or its wiring defective
Suggested fix
Allow the compressor to cool, then verify refrigerant pressures, running current and the overload protector circuit; identify and correct the root cause rather than repeatedly resetting the unit.
Safety first. Isolate the power supply before inspecting any unit. Refrigerant-circuit
and electrical repairs must be carried out by a qualified, registered technician.
Other Gree codes
- C5 — Configuration jumper or PCB setup error.
- E1 — High pressure protection in the refrigeration circuit.
- E3 — Low pressure protection.
- E5 — Overcurrent protection on compressor or main circuit.
- E7 — Mode conflict between indoor and outdoor units.
- F1 — Indoor ambient (room) sensor fault.
- F2 — Indoor evaporator temperature sensor fault.
- F3 — Outdoor ambient temperature sensor fault.
- F4 — Outdoor coil temperature sensor fault.
- F5 — Compressor discharge temperature sensor fault.