Skip to content
RemFixitSearch fault code

Error code

Mitsubishi Electric PQHY code 1302

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

Meaning

Abnormal high pressure 1 (heat source unit): 1. If the pressure of 3.87MPa [561psi] or higher is detected by the pressure sensor during operation (the first detection), the heat source unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically. 2. | Abnormal high pressure 1 (heat source unit): 1. If the pressure of 3.87MPa[561psi] or higher is detected by the pressure sensor during operation (the first detection), the heat source unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically. 2.

Member details

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

View details as a member

Possible causes

(1) LEV failure on the indoor unit -> Heating (2) Heat source unit LEV1 malfunction -> Cooling (3) Solenoid valve malfunction (SV4a-4d) (4) Closed ball valve (5) Short cycle on the indoor unit side (6) Clogged filter on the indoor unit (7) Reduced air flow due to dirty fan on the indoor unit fan (8) Dirty heat exchanger of the indoor unit (9) Indoor fan (including fan parts) failure or motor failure Rise in high pressure caused by lowered condensing capacity in heating operation for (5) - (9). (10) Insufficient heat source water supply (11) Heat source water supply cutoff (12) Dirty or clogged water heat exchanger (13) Solenoid valve (SV1) malfunction (The by-pass valve (SV1) can not control rise in high pressure). (14) Thermistor failure (TH6). (15) Pressure sensor failure (16) Failure of the thermistor input circuit and pressure sensor input circuit on the controller board (17) Faulty mounting of thermistor (TH6) (18) Disconnected male connector on the pressure switch (63H) or disconnected wire (19) Melted fuse (F1 or F2) on the controller board (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 cable (6) Failure of the pressure sensor input circuit on the controller board (1) LEV failure on the indoor unit (2) BC controller LEV malfunction Heating only or heating main :

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.

Remote technician support

Get help from a technician over a video call.

Send a messageVoice callVideo call