SiUS281117
Troubleshooting by Remote Controller
164
Service Diagnosis
2.44 Check Operation not Executed
Remote
Controller
Display
U3
Applicable
Models
RZQ
Method of Error
Detection
Check operation is executed or not.
Error Decision
Conditions
The error is decided when the unit starts operation without check operation.
Supposed
Causes
Check operation is not executed.
Troubleshooting
Has the
check operation
performed on Outdoor
unit PCB?
Press the BS4 on the outdoor unit
PCB for 5 seconds or more to
execute check operation.
Replace the outdoor unit PCB.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Caution
NO
YES