A6 " Indoor Unit: Malfunction Of Indoor Unit Fan Motor - Daikin VRV III REYQ8PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
A6
" " Indoor Unit: Malfunction of Indoor Unit Fan Motor
A6
Remote
Controller
Display
Applicable FXHQ32~100MAVE, FXDQ20~63NVET, FXDQ20~63NAVE
Models
Method of This malfunction is detected if there is no revolutions detection signal output from the fan motor.
Malfunction
Detection
Malfunction When no revolutions can be detected even at the maximum output voltage to the fan
Decision
Conditions
Supposed
Causes
Troubleshooting
236
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
Si37-701
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