Mitsubishi Electric MXZ-SM72TAM-U1 Service Manual page 41

1302 (UE): High pressure trouble
Diagnosis of failure
Continued from the previous page.
Is the resistance detected?
Is the connector for outdoor multi
controller circuit board 63H discon-
nected or loose?
Check the 63HS voltage.
Is the voltage(*) detected?
*For the voltage, refer to "How to check the components".
OCH800A_41
No
Yes
Yes
No
No
Yes
Replace the SV1.
Reconnect the connector or connect it tightly.
Replace the 63HS.
Replace the outdoor multi controller circuit
board.
Chart 4 of 4