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SiBE041401E
Troubleshooting
Service Diagnosis
62
Troubleshooting
Check No.02
Refer to P.94
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.
Turn off the power and
disconnect the fan motor
connector, then turn the
power on.
Check No.02
Check the output of the
fan motor connector
YES
YES
NO
YES
YES
NO
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
fan motor.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Does the fan
rotate smoothly?
Does the fan
rotate?
Motor
power supply
voltage 310 ~ 340
VDC?
Turn off the power and
rotate the fan by hand.
Turn on the power and
start operation.
Check No.02
Check the output of the
fan motor connector.
(R19750)
YES
NO
YES
NO
YES
NO
Replace the indoor
fan motor.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Replace the indoor
fan motor.
Rotation pulse
generated?
Stop the fan motor.
YES
Is the
voltage
fluctuation
within ±10% from
the rated
value?
Motor
control voltage 15
VDC generated?
Rotation
command voltage
1 ~ 6.5 VDC?
Rotation pulse
generated?
Summary of Contents for FTXG20LV1BW
Page 12: ...SiBE041401E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 14: ...SiBE041401E 3 Specifications Part 2 Specifications 1 Specifications 4...
Page 60: ...SiBE041401E 49 Remote Controller Part 5 Remote Controller 1 Remote controller 50...
Page 113: ...SiBE041401E Check Service Diagnosis 102 50 class Diode bridge R19944...
Page 127: ...Revision History Month Year Version Revised contents 03 2014 SiBE041401E First edition...