SiUS12-928_A
Troubleshooting
Service Diagnosis
108
Troubleshooting
Check No.01
Refer to P.149
Turn off the power supply
and disconnect the fan
motor connector, then
turn the power on.
Check No.01
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 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.01
Check the output of the
fan motor connector
(R11293)
NO
YES
YES
NO
YES
NO
Replace the fan
motor.
Replace the indoor
unit PCB.
Replace the indoor
unit PCB.
Replace the fan
motor.
Replace the fan
motor and the
indoor unit PCB.
Is the
rotation number
command pulse
generated?
Is the
rotation
command voltage
1 ~ 5 VDC
generated?
Is the
rotation number
command pulse
generated?
Stop the fan motor.
Summary of Contents for SUPER MULTI NX G Series
Page 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Page 7: ...SiUS12 928_A Table of Contents vi...
Page 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Page 11: ...SiUS12 928_A List of Functions 2...
Page 17: ...SiUS12 928_A Specifications 8...
Page 23: ...SiUS12 928_A Specifications Specifications 14...
Page 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Page 37: ...SiUS12 928_A Function and Control 28...
Page 69: ...SiUS12 928_A Control Specification Function and Control 60...
Page 71: ...SiUS12 928_A Operation Manual 62...
Page 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Page 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Page 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Page 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Page 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Page 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Page 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Page 99: ...SiUS12 928_A Service Diagnosis 90...
Page 169: ...SiUS12 928_A Removal Procedure 160...
Page 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Page 235: ...SiUS12 928_A Appendix 226...