YES
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
YES
NO
NO
NO
NO
YES
Connect the connector
accurately.
NO
Connect the connector
accurately.
YES
Short circuit X8A.
YES
Replace the harness.
YES
Eliminate the external factor.
NO
Normal operation.
Check the panel PCB and
indoor unit PCB.
Turn OFF the power supply and turn
the power ON.
↓
Press the power switch on the remote
controller.
Is the connection of
connector X70A on indoor unit
PCB (A1P) normal?
Is the connection of
connector X7A on adaptor PCB
(A2P) normal?
Is the connector X8A on
adaptor PCB (A2P) not short
circuited?
Is the harness disconnected?
Is there an external factor
(noise, etc.) except for a fault?
Error is displayed again?
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