ErrorKhoj

Samsung Air Conditioner

Samsung AC E407 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 E407 mean on a Samsung Air Conditioner?

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

Can I fix Samsung Air Conditioner error E407 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 E407?

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

Other Samsung AC codes

E202 Communication error (indoor ↔ outdoor unit) E203 Communication error (between control boards) E221 Outdoor air temperature sensor fault E231 Outdoor coil (condenser) temperature sensor fault E251 Compressor discharge temperature sensor fault E403 Indoor coil anti-freeze protection E410 Low gas / refrigerant leak or blockage E416 Compressor overheating E422 Low gas / refrigerant leak or blockage E440 Temperature outside working range E441 Temperature outside working range E458 Outdoor fan motor fault

All Samsung Air Conditioner error codes

Sources

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

Last checked: 2026-10-20