SiUS28-902_B
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
93
3.4
Indoor Unit Fan Motor Abnormality
Remote
Controller
Display
A6
Applicable
Models
FCQ, FHQ, FAQ, FTQ
Method of Error
Detection
Detection by failure of signal for detecting number of turns to come from the fan motor
Error Decision
Conditions
When revolutions cannot be detected even when output voltage to the fan is maximum
Supposed
Causes
Fan motor lock
Disconnected or wrong wiring between fan motor and PCB
Troubleshooting
Is the
w
iring from the
fan motor sec
u
rely
connected to connectors
on the indoor
u
nit
PCB?
W
iring
b
et
w
een the
indoor
u
nit PCB and fan
motor is
disconnected.
Does the fan
motor r
u
n?
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
Connect the
w
iring and t
u
rn O
N
again.
Fix the
w
iring and t
u
rn O
N
again.
N
O
Replace the indoor
u
nit PCB.
Replace the fan motor.
N
O
YES
YES
N
O
YES