ErrorKhoj

Daikin Air Conditioner

Daikin AC E1 error

Control board (PCB) fault

Needs a technicianCross-checked from 2+ sources

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

What it means

The control board has detected a fault in its own electronics or settings.

Common causes

  • Power surge or unstable voltage
  • Moisture or insects on the board
  • Failed part or wrong setting on the board

Try this at home first

Tick each step as you go

When to call a technician

If the fault repeats, a technician must check or replace the board.

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 E1 mean on a Daikin Air Conditioner?

Control board (PCB) fault. The control board has detected a fault in its own electronics or settings.

Can I fix Daikin Air Conditioner error E1 myself?

You can try a reset first: Switch off at the MCB for 10 minutes and restart. If the code returns, call a technician.

Is it safe to keep using the Air Conditioner with E1?

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

Other Daikin AC codes

A1 Control board (PCB) fault A3 Drain / water overflow protection A5 Indoor coil anti-freeze protection A6 Indoor fan motor fault C4 Indoor coil (evaporator) temperature sensor fault C9 Indoor room temperature sensor fault E3 High pressure / overload protection E5 Compressor start / rotation fault E6 Compressor start / rotation fault E7 Outdoor fan motor fault E8 Overcurrent / compressor overload EA 4-way (reversing) valve fault

All Daikin Air Conditioner error codes

Same code on other brands

E1 Indoor room temperature sensor fault / Indoor coil (evaporator) temperature sensor fault / Indoor fan motor fault / Memory (EEPROM) error — indoor unit boardSamsung AC E1 High pressure / overload protection / Communication error (indoor ↔ outdoor unit) / Indoor room temperature sensor faultVoltas AC E1 Indoor room temperature sensor fault / Outdoor unit overheat protectionBlue Star AC E1 Indoor room temperature sensor faultLloyd AC E1 Indoor room temperature sensor faultHaier AC E1 High pressure / overload protectionGree AC IE Water not filling / water supply problemLG Washing Machine E1 Water not filling / water supply problemIFB Washing Machine E1 Water not filling / water supply problemGodrej Washing Machine Err1 Door / lid not closed or not lockingHaier Washing Machine

Sources

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

Last checked: 2026-10-20