![background image](http://html1.mh-extra.com/html/daikin/rx-w-series/rx-w-series_service-manual_3662825150.webp)
Troubleshooting for FDMQ, FFQ Series
SiUS092230EA
144
Part 6 Service Diagnosis
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Correct the power
supply.
NO
Check the power supply voltage.
YES
NO
Replace the indoor
fan motor.
Does the fan
rotate smoothly?
Rotate the fan by hand.
Turn on the power on again and
start operation.
YES
Is the
voltage
fluctuation within
±10% from the rated
value?
Check No.02
Check the output of the fan motor
connector.
YES
YES
NO
NO
Note: The motor may break when the
motor connector is disconnected
while the power is turned on.
(Be sure to turn off the power
before reconnecting the
connector.)
Replace the indoor
unit PCB (control
PCB).
Replace the indoor
unit PCB (control
PCB).
Motor power
supply voltage 290 ~ 330
VDC or more?
(R24054)
YES
NO
Replace the indoor
unit PCB (control
PCB).
Replace the indoor
fan motor.
Motor control
voltage 15 VDC
generated?
Rotation
command
voltage 0 ~ 2 VDC
when stopped, 2 ~ 5 VDC
when operated
OK?
NO
YES
YES
NO
Check the connector for
connection.
Foreign matters in or
around the fan?
Correct the
connection.
Remove the foreign
matters.
Turn off the power supply.
(Unplug the power cable or turn
the breaker off.)
Summary of Contents for RX-W Series
Page 1: ... Applied Models Inverter Pair Heat Pump Service Manual SiUS092230EA Inverter Pair RX W Series ...
Page 207: ...SiUS092230EA Check Part 6 Service Diagnosis 201 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 209: ...SiUS092230EA Check Part 6 Service Diagnosis 203 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
Page 239: ...SiUS092230EA Piping Diagrams Part 8 Appendix 233 RX24WMVJU9 3D141502 ...