Daikin VRV - WII, Service Manual

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Troubleshooting by Indication on the Remote Controller SiUS30-604
158 Troubleshooting
2.4
“
A6
”
Indoor Unit: Fan Motor (M1F) Lock, Overload
Remote
Controller
Display
A6
Applicable
Models All indoor unit models
Method of
Malfunction
Detection Detection by failure of signal for detecting number of turns to come from the fan motor
Malfunction
Decision
Conditions When number of turns can’t be detected even when output voltage to the fan is maximum
Supposed
Causes
„
Fan motor lock
„
Disconnected or faulty wiring between fan motor and PC board
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connect the wiring and turn on
again.
Fix the wiring and turn on again.
YES
NO
NO
NO
YES
YES
Replace the indoor unit PC board.
Replace the fan motor.
Is the
wiring from the fan
motor securely connected
to connectors on the
indoor unit PC
board?
Wiring
between the
indoor unit PC board and
fan motor is
disconnected.
Does the fan motor run?
(V2779)