Gree error code E1
What it means
High pressure protection in the refrigeration circuit.
Possible causes
Dirty or obstructed outdoor coil Service valves not fully open System overcharged with refrigerant
Suggested fix
Clean the condenser coil and confirm outdoor fan performance, verify service valve positions and measure high-side pressure; adjust charge or correct mechanical faults strictly following Gree service guidelines.
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.
- 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).