Fault Codes / Gree / E1

GR

Gree E1

Critical

GMV6 — High pressure protection triggered.

Gree E1: High pressure protection triggered. This fault typically halts operation and needs immediate attention.

Possible causes

Dirty condenser / outdoor fan stopped.
Overcharge (too much refrigerant).

Check steps

Check/clean outdoor fan & condenser.
Measure high pressure — trips approx. ~4.0–4.4 MPa (R410A).
Check HP switch & sensor.

Affected parts

Druckschalter (HP)
Außenlüftermotor

Safety note

High-pressure side — hot & pressurized. Follow F-Gas.

Related pressure table

Source: Gree North America GMV5 Ultra Heat/Heat Recovery Service Manual JF00303410, Ch.4 Fault Code Table (gree-na.com)

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

Look up in Enthalio →

Related fault codes

PCB EEPROM read/write error.E0 Condenser fan motor malfunction.E2 Insufficient refrigerant in system.E5 Oil inadequately returning to compressor.E6 Outdoor control board internal error.E7 Communication error outdoor ↔ indoor units.F0