Troubleshooting for FDMQ, FFQ Series
SiUS092230EA
152
Part 6 Service Diagnosis
Troubleshooting
Correct the power supply.
Replace the outdoor
unit PCB (main PCB).
Check for such factors for a
long term.
(R22445)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
NO
YES
YES
YES
YES
Reconnect the harness.
Check the power supply voltage.
Check the connection of the
compressor harness.
(Precaution before turning on the power again)
Make sure the power has been off for at
least 30 seconds.
Disturbance factors
Noise
Power supply distortion
Turn on
the power. System
restarted? (Repeat a few
times.)
Loose or disconnected?
NO
NO
Replace the outdoor fan motor
and the outdoor unit PCB
(main PCB).
Does the
outdoor fan rotate
smoothly?
Is the
voltage fluctuation
within ±10% from the
rated value?
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 ...