SiUS30-1301
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
153
3.3
Drain Level Control System (S1L) Abnormality
Error Code
A3
Applicable
Models
FXFQ, FXZQ, FXDQ, FXMQ-P, FXMQ-M (Option), FXHQ (Option), FXAQ (Option)
Method of Error
Detection
By float switch OFF detection
Error Decision
Conditions
When rise of water level is not a condition and the float switch goes OFF.
Supposed
Causes
208~230V power supply is not provided
Defective float switch or short circuit connector
Defective drain pump
Drain clogging, upward slope, etc.
Defective indoor unit PCB
Loose connection of connector