Mitsubishi Electric PUMY-P36NKMU4 Technical & Service Manual page 62

Check code
1302
(UE)
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Continued from the previous page.
Is the resistance detected?
Disconnect the indoor LEV wiring to check
the resistance.
Is the 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.
Continue to the next page.
OCH811A
High pressure trouble or thermal protector trouble
Diagnosis
Yes
Yes
*For the voltage, refer to "8-8.HOW
TO CHECK COMPONENTS".
Yes
No
No
No Replace the indoor controller board.
62
Chart 3 of 4
Remedy
Replace the TH7.
Replace the indoor LEV.