Mitsubishi Electric PUMY-P36NKMU3 Technical & Service Manual page 98

Check code
7105
(EF)
Abnormal points and detection methods
The address setting of outdoor unit is wrong.
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
<Outdoor unit>
Check whether the outdoor unit address is
set in 000, or in the range of 51 to 100.
Is the address setting correct?
OCH733
Address setting error
Diagnosis
Yes
Causes and checkpoints
Wrongly set address
The outdoor unit is not set in 000, or in the range of 51
to 100.
Set the address properly, then turn the
power OFF of indoor/outdoor unit, and
remote controller simultaneously for 2
No
minutes or more, and turn the power back
ON.
Replace the outdoor controller board.
98
Remedy