Error code

Mitsubishi Electric PQHY/PQRY code 6843

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

Meaning

A control communication start bit detection error: Indoor/heat source unit communication error (Signal receiving error) Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on. Abnormal if indoor controller board could not receive any signal normally for 3 minutes. Consider the unit as abnormal under the following condition. When 2 or more indoor units are connected to a heat source unit, indoor controller board could not receive a signal for 3 minutes from heat source controller circ

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) Contact failure, short circuit or miswiring (converse wiring) of indoor/heat source unit connecting wire (2) Defective transmitting receiving circuit of heat source controller circuit board. (3) Defective transmitting receiving circuit of indoor controller board.

Solution

Solution steps are available to members and are not shown on this page. Answer the questions to open the solution.

Remote technician support

Get help from a technician over a video call.

Send a message Voice call Video call