Troubleshooting by Indication on the Remote Controller
SiUS28-902_B
118
Service Diagnosis
3.23 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?
Is the
resistance of
fan motor read
w
ire
connector pins
b
et
w
een
V
cc-U
VW
and G
N
D-U
VW
b
alanced?
T
u
rn po
w
er OFF.
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
the connector or parts may
b
e damaged.
Caution
Check connector of fan motor.
(
*
1)
Replace the fan motor.
Replace the o
u
tdoor
u
nit PCB
(A1P).
Connect correctly.
N
O
YES
N
O
YES
X106A (or X107A)
GN
Measure the
resistance
between Vcc-
UVW and
GND-UVW.
5 Gray
Vcc
W
V
U
4 Pink
3 Orange
2 Blue
1 Yellow
