Troubleshooting by Error Codes
4.11 Indoor Fan Motor Status Abnormality
A6-20
Error Code
Applicable
FTQ-TA
Models
Outline
The indoor unit periodically receives control status information from the fan motor.
Error is issued when the information shows abnormality.
Error Decision
If the information shows Power Limit or Temp Limit status, it will be deemed a MOTOR LIMIT
Conditions
abnormal operation. (The system can keep operating.)
If the information shows Motor Lost Control or Current Trip status, it will be deemed a MOTOR
TRIP abnormal operation. (The system stops operating.)
Error Reset
If the indoor unit stops receiving abnormal information, the error will be cleared.
Conditions
Supposed
Fan or motor obstruction
Causes
Blocked filters
Power interruption (low voltage)
Incorrect wiring
Blockage in the airflow (ductwork) or ductwork undersized
High loading conditions
Corrective
Check for obstruction on the fan, motor, or ductwork.
Actions
Clean filters.
Check filters, grille, duct system, heat exchanger air inlet/outlet for blockages.
Verify the input voltage at the motor.
Check wiring.
Replace motor.
Reference
CHECK 19 Refer to page 311.
228
SiUS281811EA
Part 6 Service Diagnosis