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
No
Is the voltage normal?
Is it free from any trace of over-
heating or burning?
Replace the indoor controller board.
Check the voltage and appearance of the
indoor controller board.
Check the resistance of SV1.
Chart 3 of 4
No
No
Yes
Yes
Yes
46
OCH634C
Continued from the previous page.
Is the resistance detected?
Is the resistance detected?
Replace the TH7.
Replace the indoor LEV.
Disconnect the indoor LEV wiring to check
the resistance.
Continue to the next page.