ErrorKhoj

All Gree Air Conditioner error codes

18 codes Cross-checked from 2+ sources

All Gree Air Conditioner error codes

CodeMeaningAction
E1 High pressure / overload protection Needs a technician
E2 Indoor coil anti-freeze protection You can usually fix it
E3 Low gas / refrigerant leak or blockage Needs a technician
E4 Compressor overheating Needs a technician
E5 Overcurrent / compressor overload Needs a technician
E6 Communication error (indoor ↔ outdoor unit) Needs a technician
E7 Mode conflict (multi-split) You can usually fix it
E9 Drain / water overflow protection You can usually fix it
F1 Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor faultMeaning depends on your model Needs a technician
F2 Indoor coil (evaporator) temperature sensor fault / Outdoor coil (condenser) temperature sensor faultMeaning depends on your model Needs a technician
F3 Outdoor air temperature sensor fault Needs a technician
F4 Outdoor coil (condenser) temperature sensor fault / Compressor discharge temperature sensor faultMeaning depends on your model Needs a technician
F5 Compressor discharge temperature sensor fault / Wired remote temperature sensor faultMeaning depends on your model Needs a technician
H1 Defrosting (normal) Not a fault
H3 Overcurrent / compressor overload Needs a technician
H5 Inverter board / power module protection Needs a technician
H6 Indoor fan motor fault Needs a technician
C5 Control board (PCB) fault Needs a technician

How to see the error code

Most split ACs show the code on the indoor unit display (e.g. E6, CH05). Some models only blink a light — count the blinks, or press the remote’s check/diagnosis button if your manual mentions one.

How to reset

Sources

We write every explanation in our own words from these references.

Last checked: 2026-10-20

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