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SiUS092230EA
Troubleshooting for FTXR Series
Part 6 Service Diagnosis
137
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
(R21193)
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.
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 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 ...