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Does float switch work?
Does drain pump work?
Is circuit wiring normal?
Is power of
drain pump turned on? ∗
Are connector pins 1 and 3
at drain pump unit side shorted
(Resistance value 0)?
Is connection of
float switch connector
(Indoor control board CN34)
normal?
Check the drain pipe, etc.
Replace drain pump.
Check wiring.
Replace drain pump
and indoor P.C. board
(MCC-1403).
Correct connection
of connector.
Check indoor P.C. board
(MCC-1403).
Defect → Replace
Check and correct wiring
and wire circuit.
YES
YES
YES
YES
YES
YES
NO NO
NO
NO
NO
NO
Is there no connection error or
disconnection of CN083 connector?
Connect connector.
Correct the wiring circuit.
Check indoor P.C. board (MCC-1403).
Defective → Replace
Is there no mechanical lock of the fan motor?
Is condenser normal?
Replace fan motor.
Replace condenser.
YES
YES
YES
NO
NO
NO
[P10 error]
∗ Check that voltage of 1 – 3 pin of CN068 on the indoor P.C. board is 220–240V.
[P01 error]