Gree error code C5
What it means
Configuration jumper or PCB setup error.
Possible causes
Missing jumper after PCB replacement Incorrect jumper position Mismatch between jumper configuration and unit model
Suggested fix
Compare jumper layout on the current PCB with the original board and technical documentation, then correct jumper placement or install the required jumper; retest system communication and operation after reconfiguring.
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
- 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.
- H1 — Defrost mode status indication (not a fault).