Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 102

Check code
7105
(EF)
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
<M-NET RC (main)>
Check whether the M-NET RC (main)
address is set in 000, or in the range of
101 to 150.
Is the address setting correct?
<M-NET RC (sub)>
Check whether the M-NET RC (sub)
address is set in 000, or in the range of
151 to 200.
Is the address setting correct?
OCH632A
Address setting error
Diagnosis
Yes
Yes
Set the address properly, then turn the
power OFF of indoor/outdoor unit, Fresh
Master, Lossnay and remote controller
No
simultaneously for 2 minutes or more, and
turn the power back ON.
Replace the M-NET RC (main).
Set the address properly, then turn the
power OFF of indoor/outdoor unit, Fresh
Master, Lossnay and remote controller
No
simultaneously for 2 minutes or more, and
turn the power back ON.
Replace the M-NET RC (sub).
102
Chart 2 of 2
Remedy