![background image](http://html.mh-extra.com/html/daikin/fdmq12rvju/fdmq12rvju_service-manual_501418141.webp)
SiUS091601EA
Troubleshooting for FTX, FVXS Series
Part 6 Service Diagnosis
136
Reference
Troubleshooting
Check No.11
Check No.11
Check the power supply
waveform.
Check the voltage of the
connection wires on the indoor
terminal board between No. 1
and No. 3, and between No. 2
and No. 3.
YES
Blink
Replace the indoor unit PCB
(control PCB).
Locate the cause of the
disturbance of the power
supply waveform, and correct
it.
NO
(R21189)
Continuously ON or OFF
NO
YES
YES
NO
Caution
Correct the indoor unit -
outdoor unit connection wires.
Replace the outdoor unit PCB
(main PCB).
Replace the connection wires
between the indoor unit and
outdoor unit.
Is LED A blinking?
Properly insulated?
Is there any disturbance?
Is there any wiring error?
Check the indoor unit - outdoor
unit connection wires.
Check the LED A on the outdoor
unit PCB.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Before you check the LED A, cancel
the standby electricity saving
function by starting fan operation
with the remote controller.
Wait at least for 7 sec. after turning
on the power.
NO
YES
Check the power supply voltage.
Correct the power supply.
YES
NO
Replace the outdoor fan motor
and the outdoor unit PCB
(main PCB).
Rotate the
outdoor fan by hand.
Does the outdoor fan rotate
smoothly?
Is the
voltage fluctuation
within ±10% from the
rated value?
Summary of Contents for FDMQ12RVJU
Page 18: ...SiUS091601EA 13 Part 2 Specifications 1 Specifications 14 Part 2 Specifications ...
Page 198: ...Check SiUS091601EA 193 Part 6 Service Diagnosis 18 24 class R24538 1 2 3 4 Multimeter ...
Page 201: ...SiUS091601EA Check Part 6 Service Diagnosis 196 18 24 class R24539 DC DC W V U ...
Page 229: ...SiUS091601EA Piping Diagrams Part 8 Appendix 224 RXL15QMVJU RXL18UMVJU 3D100007 3D123368 ...
Page 230: ...Piping Diagrams SiUS091601EA 225 Part 8 Appendix RXL24UMVJU 3D107985A ...