Service manual

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Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2830)
Is indoor - outdoor
and outdoor - outdoor
unit transmission
wiring normal?
Replace indoor unit PC board.
Test operation may not have
been carried out successfully.
After fixing incorrect wiring,
push and hold the RESET
button on the master outdoor
unit PC board for 5 seconds.
YES
NO
YES
NO
NO
YES
Is the test operation
(Wiring check
operation) carried
out?
Is indoor -outdoor
and outdoor-outdoor
unit transmission
wiring normal?
Open stop valve.
YES
NO
Are the stop valves
opened?
* The unit will not run for up to
12 minutes.