Error code

Mitsubishi Electric PFD/PUHY code 0403

For your safety

This fault is rated critical. No remote repair or do-it-yourself instructions are given; do not use the appliance or try to open or repair it.

Hazard area: mains voltage and refrigerant gas circuit

If there is a risk to life, first move to a safe place, then call 112. Do not follow remote repair instructions.

Call 112

The emergency numbers here are for Turkey. If you are outside Turkey, call your local emergency number.

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No approved translation for this record yet; showing the original text.

Meaning

Serial communication error: Serial communication error between the main board and the INV board on the compressor, and between the main board and the inverter board on the fan Detail code 01: Between the main board and the compressor INV board Detail code 05: Between the main board and the FAN INV board

Member details

Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.

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Possible causes

(1) Faulty wiring (2) Inverter address switch setting error (3) Transformer failure (4) Compressor INV board failure FAN INV board failure.

Solution

Solution steps are not shared for faults that may be dangerous.

No do-it-yourself solution is given for this fault. For your safety, call an authorised service.