Error code

Mitsubishi Electric PUHY code 1302

For your safety

This fault is rated high and involves an area that affects personal safety. 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

Do not use the appliance and call an authorised service. If there is a risk to life, move to a safe place and see the emergency numbers.

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

High pressure fault 1 (Outdoor unit): 1) If the pressure of 3.78MPa [548psi] or higher is detected by the pressure sensor during operation (the first detection), the outdoor stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes automatically. | crease due to clogging of the heat exchanger The fan is not properly controlled as the outdoor temperature cannot be precisely detected by the

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Possible causes

(1) Indoor unit LEV2 actuation failure -> Cooling Indoor unit LEV actuation failure -> Heating (2) Closed refrigerant service valve (3) Short cycle on the indoor unit side (4) Clogged filter on the indoor unit (5) Reduced air flow due to dirty fan on the indoor unit fan (6) Dirty heat exchanger of the indoor unit (7) Indoor fan (including fan parts) failure or motor failure Rise in high pressure caused by lowered condensing capacity in heating operation for (2) - (7). by low pressure drawing for (8) - (10). (11) Solenoid valve (SV1a) malfunction (The by-pass valve (SV1a) can not control rise in high pressure). (12) Thermistor failure (TH3, TH7) (13) Pressure sensor failure (14) Failure of the thermistor input circuit and pressure sensor input circuit on the controller board (15) Thermistor mounting problem (TH3, TH7) (16) Disconnected male connector on the pressure switch (63H1) or disconnected wire (17) Voltage drop caused by unstable power supply voltage (18) Open phase in the power-supply due to improper power-supply wiring (1) Inner pressure drop due to a leakage. (2) Pressure sensor failure (3) Shorted-circuited pressure sensor cable due to torn outer rubber (4) A pin on the male connector on the pressure sensor is missing or contact failure (5) Disconnected pressure sensor ca

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.