MXZ-SM48NAMHZ Service Manual

64
OCH789
Check code
1302
(UE)
High pressure trouble
●Diagnosis of defects
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis Remedy
Chart 4 of 4
*For the voltage, refer to "8-8.HOW TO
CHECK THE COMPONENTS".
No
No
Yes
Continued from the previous page.
Is the voltage(*) detected?
Replace the SV1.
Replace the 63HS.
Replace the outdoor controller board.
Yes
No
Is the connector for outdoor
controller board 63H disconnected or
loose?
Reconnect the connector or connect it tightly.
Check the 63HS voltage.
Is the resistance detected?
Yes