Error code

Mitsubishi Electric PUH code A3

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

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.

All emergency numbers and province details

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

Meaning

BUS BUSY 1. Over error by collision damage Abnormal if transmitting is not possible for 8-10 minutes continuously because of collision of transmission. 2. Data could not reach transmission wire for 8-10 minutes continuously because of noise or etc. Note) The address and attribute displayed at remote controller indicate the controller that detected abnormality.

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) Transmission processor could not transmit because short cycle voltage of noise and the like have entered into transmission wire continuously. (2) Transmission quantity has increased and transmission is not possible because there was wiring mistake of terminal block for transmission wire (TB3) and terminal block for central control (TB7) in outdoor unit.

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.