Gree Air Conditioner

Gree AC F1 error

Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor fault

Needs a technicianReported by one source — verify

Try a reset once. If it comes back, a trained technician should repair it.

Meaning depends on your model

Possible meaning 1Indoor room temperature sensor fault

Needs a technician

The control board is getting a wrong reading, or no reading, from the indoor room temperature sensor. Usually the sensor, its wire or its plug is loose, damaged or has failed.

Common causes

Loose or rusted sensor plug on the control board
Sensor wire cut, pinched or bitten by rats
Sensor has failed (open or short circuit)
Less often, a fault on the control board

Try this at home first

Tick each step as you go

Switch off at the wall socket or MCB for 5 minutes, then restart
If the code does not come back, no further action is needed
Look for any visible wire damage from outside — do not open covers

When to call a technician

If the code returns after a reset, a technician needs to test and usually replace the sensor. It is a common, low-cost repair.

Possible meaning 2Indoor coil (evaporator) temperature sensor fault

Needs a technician

The control board is getting a wrong reading, or no reading, from the indoor coil (evaporator) temperature sensor. Usually the sensor, its wire or its plug is loose, damaged or has failed.

Common causes

Loose or rusted sensor plug on the control board
Sensor wire cut, pinched or bitten by rats
Sensor has failed (open or short circuit)
Less often, a fault on the control board

Try this at home first

Tick each step as you go

Switch off at the wall socket or MCB for 5 minutes, then restart
If the code does not come back, no further action is needed
Look for any visible wire damage from outside — do not open covers

When to call a technician

If the code returns after a reset, a technician needs to test and usually replace the sensor. It is a common, low-cost repair.

Safety first

Always switch off at the wall socket or MCB before touching any part. Do not open the outdoor unit, control boards or gas pipes yourself — they carry high voltage and pressure.

Frequently asked questions

What does F1 mean on a Gree Air Conditioner?

Different Gree models use this code for different faults. The most commonly reported meanings are below. Check the model number on the sticker of your unit and your user manual to know which one applies. Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor fault.

Can I fix Gree Air Conditioner error F1 myself?

You can try a reset first: Switch off at the wall socket or MCB for 5 minutes, then restart. If the code returns, call a technician.

Is it safe to keep using the Air Conditioner with F1?

Avoid repeated restarts; running with this fault can cause more damage.

Other Gree AC codes

E3 Low gas / refrigerant leak or blockage E4 Compressor overheating E5 Overcurrent / compressor overload E6 Communication error (indoor ↔ outdoor unit) E7 Mode conflict (multi-split) E9 Drain / water overflow protection F2 Indoor coil (evaporator) temperature sensor fault / Outdoor coil (condenser) temperature sensor fault F3 Outdoor air temperature sensor fault F4 Outdoor coil (condenser) temperature sensor fault / Compressor discharge temperature sensor fault F5 Compressor discharge temperature sensor fault / Wired remote temperature sensor fault H1 Defrosting (normal) H3 Overcurrent / compressor overload

All Gree Air Conditioner error codes

Same code on other brands

F1 Indoor room temperature sensor fault / Indoor fan motor faultVoltas AC F1 Indoor room temperature sensor fault / Outdoor coil (condenser) temperature sensor fault / Indoor coil (evaporator) temperature sensor faultBlue Star AC F1 Inverter board / power module protectionHaier AC

Sources

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

Last checked: 2026-10-20