Haier Air Conditioner

Haier AC E2 error

Indoor coil (evaporator) temperature sensor fault

Needs a technicianFrom brand’s official support

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

What it means

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 E2 mean on a Haier Air Conditioner?

Indoor coil (evaporator) temperature sensor fault. 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.

Can I fix Haier Air Conditioner error E2 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 E2?

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

Other Haier AC codes

E1 Indoor room temperature sensor fault E4 Memory (EEPROM) error — indoor unit board E5 Indoor coil anti-freeze protection E7 Communication error (indoor ↔ outdoor unit) E9 High pressure / overload protection E14 Indoor fan motor fault F1 Inverter board / power module protection

All Haier Air Conditioner error codes

Same code on other brands

E2 Indoor coil anti-freeze protectionVoltas AC E2 Indoor coil (evaporator) temperature sensor fault / Indoor coil anti-freeze protectionBlue Star AC E2 Indoor coil (evaporator) temperature sensor faultLloyd AC E2 Indoor coil anti-freeze protectionGree AC OE Water not drainingLG Washing Machine bE2 Button stuck / keypad faultSamsung Washing Machine E-02 Cooking time set too longSamsung Microwave E2 Water not drainingIFB Washing Machine E2 Water not drainingGodrej Washing Machine E01 Control board (PCB) faultBosch Dishwasher

Sources

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

Last checked: 2026-10-20