Service Manual

Troubleshooting by Error Codes SiUS281811E
188 Part 6 Service Diagnosis
4.7 Drain Level Control System (S1L) Abnormality
Error Code A3
Applicable
Models
FCQ-TA, FBQ-P
Method of Error
Detection
By float switch OFF detection
Error Decision
Conditions
When the float switch goes OFF when conditions for rise of water level are not met
Supposed
Causes
 Defective drain pump
 Improper drain piping work
 Drain piping clogging
 Defective float switch
 Defective indoor unit PCB
 Defective short circuit connector on PCB