ErrorKhoj

Voltas Air Conditioner

Voltas AC E3 error

Low gas / refrigerant leak or blockage / Outdoor air 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

Different Voltas 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.

Possible meaning 1Low gas / refrigerant leak or blockage

Needs a technician

The system has detected too little refrigerant flow — usually a gas leak or a blockage in the pipes.

Common causes

  • Gas leak at a joint, coil or pipe
  • Blocked capillary or expansion valve
  • Service valves not fully opened after installation

Try this at home first

Tick each step as you go

When to call a technician

Call a technician to find and fix the leak before refilling gas. Refilling without fixing the leak only wastes money.

Possible meaning 2Outdoor air temperature sensor fault

Needs a technician

The control board is getting a wrong reading, or no reading, from the outdoor air 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

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 E3 mean on a Voltas Air Conditioner?

Different Voltas 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. Low gas / refrigerant leak or blockage / Outdoor air temperature sensor fault.

Can I fix Voltas Air Conditioner error E3 myself?

You can try a reset first: Switch the AC off — running it short of gas can damage the compressor. If the code returns, call a technician.

Is it safe to keep using the Air Conditioner with E3?

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

Other Voltas AC codes

E0 Memory (EEPROM) error — indoor unit board E1 High pressure / overload protection / Communication error (indoor ↔ outdoor unit) / Indoor room temperature sensor fault E2 Indoor coil anti-freeze protection E4 Compressor overheating / High pressure / overload protection / Indoor room temperature sensor fault E5 Overcurrent / compressor overload E6 Communication error (indoor ↔ outdoor unit) F1 Indoor room temperature sensor fault / Indoor fan motor fault F2 Indoor coil (evaporator) temperature sensor fault / Outdoor fan motor fault F3 Outdoor air temperature sensor fault / Overcurrent / compressor overload

All Voltas Air Conditioner error codes

Same code on other brands

E3 High pressure / overload protectionDaikin AC E3 Outdoor air temperature sensor fault / Communication error (indoor ↔ outdoor unit) / Indoor fan motor faultBlue Star AC E3 Compressor start / rotation faultLloyd AC E3 Low gas / refrigerant leak or blockageGree AC 3C Motor / drum rotation faultSamsung Washing Machine E-02 Cooking time set too longSamsung Microwave E3 Unbalanced load / Motor / drum rotation faultIFB Washing Machine E3 Door / lid not closed or not locking / Unbalanced loadGodrej 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