Daikin FTX25JVEA9 Service Manual page 266

Si18-201
2.6.2 Malfunction of Drain Water Level System (Float Type)
A3
Remote
Controller
Display
Applicable FHYC
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
"
"
"
"
Service Diagnosis
Failure of drain pump
Improper drain piping work
Drain piping clogging
Failure of float switch
Failure of indoor unit PC board
Failure of short-circuit connector
Troubleshooting - SkyAir Indoor Unit
253