Gree error code F3
What it means
Outdoor ambient temperature sensor fault.
Possible causes
Outdoor sensor exposed to mechanical damage Wiring deterioration due to weather Connector issues at PCB
Suggested fix
Inspect sensor housing and leads, compare measured resistance to outdoor temperature; renew the sensor or connector as required to restore accurate sensing.
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.
- F4 — Outdoor coil temperature sensor fault.
- F5 — Compressor discharge temperature sensor fault.
- H1 — Defrost mode status indication (not a fault).