1302
(UE)
High pressure trouble
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Diagnosis Remedy
Chart 4 of 4
No
No
Yes
Continued from the previous page
Is there a 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 there a resistance detected?
Yes
64
*For the voltage, refer to "8-7.HOW TO
CHECK THE COMPONENTS".
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