Daikin Super multi NX E Series User Manual

SiBE121135_A Troubleshooting for RA Indoor Unit
Service Diagnosis 174
Troubleshooting FTXG, FTXS35/42/50K, FTXS-J, FTXS-G, ATXS, FVXG, FVXS Series
Check No.02
Refer to P.231
Turn off the power supply 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 remaining power supply.
(Turn off the power supply before
connecting the connector also.)
Caution
Replace the indoor
fan motor.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Does the fan
rotate smoothly?
Does the fan
rotate?
Is the motor
power supply voltage
310 ~ 340 VDC
generated?
Is the motor
control voltage 15 VDC
generated?
Turn off the power supply
and rotate the fan by hand.
Turn the power on and start
operation.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check No.02
Check the output of the fan
motor connector
(R18469)
NO
YES
YES
NO
YES
NO
Replace the indoor
fan motor.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Replace the indoor
fan motor.
Replace the indoor
fan motor and the
indoor unit PCB.
Is the rotation pulse
generated?
Is the
rotation command
voltage 1 ~ 5 VDC
generated?
Is the
rotation pulse
generated?
Stop the fan motor.
Correct the power
supply.
NO
YES
Check the power supply
voltage.
Is the
voltage fluctuation
within ±10% from the
rated value?

Daikin Super multi NX E Series Specifications

General

Brand	Daikin
Model	Super multi NX E Series
Category	Air Conditioner
Language	English