Check code
1302
High pressure trouble
●Diagnosis of defectives
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
Continued from the previous page
Is there a resistance detected?
Is there a resistace detected?
Replace the TH7.
Replace the indoor LEV.
Disconnect the indoor LEV wiring to check
the resistance.
Continue to the next page
41
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