Gree Air Conditioner

Gree AC E6 error

Communication error (indoor ↔ outdoor unit)

Needs a technicianReported by one source — verify

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

We found this meaning in only one secondary source. Confirm it with your user manual or brand customer care before any repair.

What it means

Two parts of the appliance (indoor ↔ outdoor unit) have stopped talking to each other. A loose wire, low voltage or a faulty board can cause this.

Common causes

Loose or damaged connecting / signal wire
Low or fluctuating voltage, or a faulty stabilizer
Water, insects or rust on terminals
Faulty control board

Try this at home first

Tick each step as you go

Switch off at the MCB for 5–10 minutes, then switch on
Make sure the stabilizer is on and working
If the unit was recently installed or shifted, ask the installer to check the wiring

When to call a technician

If it comes back, a technician should check the connecting cable and boards. Do not open the outdoor unit yourself — it has high voltage.

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 E6 mean on a Gree Air Conditioner?

Communication error (indoor ↔ outdoor unit). Two parts of the appliance (indoor ↔ outdoor unit) have stopped talking to each other. A loose wire, low voltage or a faulty board can cause this.

Can I fix Gree Air Conditioner error E6 myself?

You can try a reset first: Switch off at the MCB for 5–10 minutes, then switch on. If the code returns, call a technician.

Is it safe to keep using the Air Conditioner with E6?

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

Other Gree AC codes

E1 High pressure / overload protection E2 Indoor coil anti-freeze protection E3 Low gas / refrigerant leak or blockage E4 Compressor overheating E5 Overcurrent / compressor overload E7 Mode conflict (multi-split) E9 Drain / water overflow protection F1 Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor fault 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

All Gree Air Conditioner error codes

Same code on other brands

E6 Outdoor coil (condenser) temperature sensor faultSamsung AC E6 Communication error (indoor ↔ outdoor unit)Voltas AC E6 Compressor start / rotation faultDaikin AC E6 Communication error (indoor ↔ outdoor unit)Blue Star AC LE Motor / drum rotation faultLG Washing Machine E-06 Heating faultSamsung Microwave

Sources

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

Last checked: 2026-10-20