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
Chart 2 of 4
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Is the indoor unit fi lter clogged? Clean the fi lter.
(Clogged fi lter)
(No clog)
Continued from the previous page
Is there dirt on the indoor heat
exchanger?
Is the outdoor unit short-cycled?
Is there dirt on the outdoor heat
exchanger?
Are the pipes clogged or broken?
Wash the indoor heat exchanger.
Solve the short cycle.
Wash the outdoor heat exchanger.
Defective pipes.
(dirty)
(dirty)
(short-cycled)
(no dirt)
(no dirt)
(no short-cycle)
Continue to the next page
Disconnect the TH7 wiring and check the
resistance.
40
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