Error code

Mitsubishi Electric PUHZ code UL

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.

All emergency numbers and province details

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

Meaning

Low pressure (63L operated) Abnormal if 63L is operated (under -0.03 MPa) during compressor operation. 63L: Low-pressure switch Compressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.

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) Stop valve of outdoor unit is closed during operation. (2) Disconnection or loose connection of connector (63L) on outdoor controller board (3) Disconnection or loose connection of 63L (4) Defective outdoor controller board (5) Leakage or shortage of refrigerant (6) Malfunction of linear expansion valve (1) Decrease of power supply voltage (2) Looseness, disconnection or converse of compressor wiring connection (3) Defective fan of outdoor units (4) Short cycle of indoor/outdoor units (5) Defective input circuit of outdoor controller board (6) Defective compressor (7) Decreased water flow (8) Clogged filter of water pipe (9) Clogged plate heat exchanger (0) Locked water pump (1) Malfunction of water pump

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.