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Daikin Air Conditioner

Daikin AC F6 error

High pressure / overload protection

Needs a technicianCross-checked from 2+ sources

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

What it means

Refrigerant pressure or temperature is too high, so the AC stopped itself for safety.

Common causes

  • Very dirty outdoor coil or blocked air flow
  • Outdoor fan not working
  • Outdoor unit in a closed space or very hot sun
  • Overcharged gas or a blockage in the pipes

Try this at home first

Tick each step as you go

When to call a technician

If it repeats, get the outdoor coil cleaned and the gas pressure checked.

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 F6 mean on a Daikin Air Conditioner?

High pressure / overload protection. Refrigerant pressure or temperature is too high, so the AC stopped itself for safety.

Can I fix Daikin Air Conditioner error F6 myself?

You can try a reset first: Switch off for 15–30 minutes. If the code returns, call a technician.

Is it safe to keep using the Air Conditioner with F6?

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

Other Daikin AC codes

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 F3 Compressor overheating H0 Compressor start / rotation fault H6 Compressor start / rotation fault H8 Current sensor (CT) fault H9 Outdoor air temperature sensor fault J3 Compressor discharge temperature sensor fault J6 Outdoor coil (condenser) temperature sensor fault

All Daikin Air Conditioner error codes

Same code on other brands

F6 Outdoor air temperature sensor faultHaier AC

Sources

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

Last checked: 2026-10-20