Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 58

Check code
1302
(UE)
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Continued from the previous page
Is there a resistance detected?
Disconnect the indoor LEV wiring to check
the resistance.
Is there a resistance detected?
Check the voltage and appearance of the
indoor controller board.
Is the voltage normal?
Is it free from any trace of over-
heating or burning?
Check the resistance of SV1.
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OCH632A
High pressure trouble
Diagnosis
Yes
Yes
Yes
No
No
Replace the indoor controller board.
No
58
Chart 3 of 4
Remedy
Replace the TH7.
Replace the indoor LEV.