Gree error code H5
What it means
IPM (intelligent power module) protection.
Possible causes
IPM detecting overcurrent or overtemperature DC bus voltage instability Compressor electrical fault being limited by IPM
Suggested fix
Evaluate power supply and DC bus values, check compressor windings and ensure adequate cooling of the IPM; replace the IPM or outdoor inverter board when testing confirms module failure and verify the compressor is not the root cause.
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.