Daikin RXYQ96PYDN Service Manual page 357

R-410a heat pump 60hz, r-410a heat recovery 60hz
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Troubleshooting by Indication on the Remote Controller
A6
Indoor Unit: Malfunction of Indoor Unit Fan Motor
A6
Remote
Controller
Display
Applicable
FXHQ, FXDQ
Models
Method of
Malfunction
Detected by no fan motor revolutions.
Detection
Malfunction
Decision
Conditions
No fan revolutions
detected even at
maximum voltage.
Supposed
Causes
Troubleshooting
342
Faulty indoor fan motor
Broken wires
Faulty contact
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Are the
X4A and X27A
connectors securely
connected?
YES
Is the
power of approx. 12VDC
supplied between the Pins1 and 3 when
the X27A is disconnected and the
power supply turns
ON?
NO
NO
YES
SiUS34-801A_b
Properly connect the connectors.
(At this time, check for any
faulty connector contact or
broken wires.)
Check the indoor unit fan motor
and the wiring circuits of the
motor.
Replace the indoor unit PC
board.
Troubleshooting

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