Gree error code E1
What it means
Midwall: High pressure protection in the refrigeration circuit. CGIF/GCIF inverter cassette: Compressor high-pressure protection (high-pressure switch open for 3 s; unit locks out until power reset).
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.
- CC — Outdoor drive board memory chip malfunction (replace outdoor drive board if persistent) (CGIF/GCIF inverter cassette).
- E2 — Indoor anti-freezing protection (evaporator temperature below protective value; compressor and outdoor fan stop) (CGIF/GCIF inverter cassette).
- E3 — Midwall: Low pressure protection. CGIF/GCIF inverter cassette: Compressor low-pressure / refrigerant-lacking protection (also shown during refrigerant recycling mode).
- E4 — Compressor high discharge temperature protection (locks out after 6 occurrences) (CGIF/GCIF inverter cassette).
- E5 — Overcurrent protection on compressor or main circuit.
- E6 — Communication failure between indoor and outdoor main boards (or display board and indoor unit) (CGIF/GCIF inverter cassette).
- E7 — Mode conflict between indoor and outdoor units.
- E8 — Indoor fan motor malfunction (no fan signal for 30 s; locks out after 6 events in an hour) (CGIF/GCIF inverter cassette).
- E9 — Water-full / overflow protection (water level switch cut off for 8 s) (CGIF/GCIF inverter cassette).