Service manual

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YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Diagnosis Flow 7
Diagnosis Flow 8
Correct the connection wiring.
Replace the BS unit PC board
concerned.
Is
the wiring
between the BS units
correct?
Check 3
Check 3
Check 4
Check 4
YES
NO
Correct the connection wiring.
Replace the indoor unit or BS unit
PC board.
Is the
connection wiring
between the indoor unit and
the BS unit correct?