Daikin RXYQ96PYDN Service Manual page 353

Troubleshooting by Indication on the Remote Controller
A3
3.3 Indoor Unit: Malfunction of Drain Level Control
System (S1L)
A3
Remote
Controller
Display
Applicable
FXFQ, FXSQ, FXDQ, FXMQ, FXHQ (Option), FXAQ (Option)
Models
Method of
By float switch OFF detection
Malfunction
Detection
Malfunction
When rise of water level is not a condition and the float switch goes OFF.
Decision
Conditions
Supposed
Causes
338
220~240V power supply is not provided
Defect of float switch or short circuit connector
Defect of drain pump
Drain clogging, upward slope, etc.
Defect of indoor unit PC board
Loose connection of connector
SiUS34-801A_b
Troubleshooting