Daikin SUPER MULTI NX G Series Service Manual

Troubleshooting for Indoor Unit SiUS12-928_B
151 Service Diagnosis
Troubleshooting
Check No.02
Refer to P.192
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.
Caution
Replace the indoor
fan motor.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
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
(R14970)
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.
Turn off the power supply
and rotate the fan by
hand.
Does the fan rotate
smoothly?
Turn the power on and
start operation.
Does the fan
rotate?
Stop the fan motor.
Is the rotation
pulse
generated?
Is the rotation
pulse generated?
Is the
rotation
command
voltage 1 ~ 5
VDC
generated?
Is the motor
control voltage 15
VDC generated?
Is the
motor power
supply voltage 310
~ 340 VDC
generated?
Turn off the power supply
and disconnect the fan
motor connector, then
turn the power on.

Daikin SUPER MULTI NX G Series Specifications

General

Brand	Daikin
Model	SUPER MULTI NX G Series
Category	Air Conditioner
Language	English