Troubleshooting by Indication on the Remote Controller
SiUS28-902_B
112
Service Diagnosis
3.18 Outdoor Unit Fan Motor Abnormality
Remote
Controller
Display
E7
Applicable
Models
RZR, RZQ
Method of Error
Detection
The error is detected according to the revolution speed detected by hall IC when the fan motor
runs.
Error Decision
Conditions
When the fan runs with revolution speed less than a specified one for 6 seconds or more
when the fan motor running conditions are met
When the error is generated 4 times, the system shuts down.
Supposed
Causes
Defective fan motor
The harness connector between fan motor and PCB is left in disconnected, or defective
connector
Fan does not run due to foreign matters tangled
Clearing condition: Operate for 5 minutes (normal)
Troubleshooting
YES
N
O
N
O
YES
YES
N
O
Caution
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.
Connector of
fan motor is
disconnected.
Is the fan
rotata
b
le easily
b
y
hand after disconnect the
connector of fan motor?
Is
there any foreign
matter the fan?
Are the
resistances
b
et
w
een pins
correct?
Connect the connector.
Remo
v
e the foreign matter.
Replace the fan motor of
o
u
tdoor
u
nit.
YES
N
O
Replace the fan motor of
o
u
tdoor
u
nit.
Replace the o
u
tdoor
u
nit
PCB.
CHECK 3
Check on connector of fan
motor
CHECK 3
