Troubleshooting by Indication on the Remote Controller
49
3.3
A3
Drain Level Control System
(S1L) Abnormality
Remote Controller Display
A3
Applicable Models
R-22: FXC, FXF, FXA, FXK, FXH (Option), FXM
(Option), FXYB
R-410A: FXFQ, FXZQ, FXDQ, FXMQ-P, 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
Proper 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
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