Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
137
2.26 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
NO
NO
YES
YES
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Connector
of fan motor is
disconnected.
Is the
fan rotatable
easily by hand after
disconnect the connector
of fan motor?
Is
there any
foreign matter the
fan?
Are the
resistances between pins
above judgement?
Connect the connector.
Remove the foreign matter.
Replace the fan motor of
outdoor unit.
YES
NO
Replace the fan motor of
outdoor unit.
Replace the outdoor unit
PCB.
CHECK 3
Check on connector of fan
motor
CHECK 3