Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
145
2.31 Outdoor Unit Fan Motor Signal Abnormality
Remote
Controller
Display
H7
Applicable
Models
RZR, RZQ
Method of Error
Detection
Detection of abnormal signal from fan motor
Error Decision
Conditions
In case of detection of abnormal signal at starting fan motor
Supposed
Causes
Defective fan motor signal (circuit error)
Broken, short or disconnection connector of fan motor connection cable
Inverter PCB abnormality
Troubleshooting
Note:
1: Disconnect connector and measure the following resistance.
Is the fan
motor connector
X106A or X107A connected
to PCB correctly?
The
resistance
of fan motor read
wire connector pins
between Vcc-UVW and
GND-UVW
balanced?
Turn power OFF.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
Check connector of fan motor.
(
∗
1)
Replace the fan motor.
Replace the outdoor unit PCB
(A1P).
Connect correctly.
NO
YES
NO
YES
X106A (or X107A)
PG
Measure the
resistance
1 White
Vsp
Vcc
GND
Vm
2 Orange
3 Brown
4 Blue
5 Red