F4 " Outdoor Unit: Humidity Alarm - Daikin RQYQ140-180PY1 Service Manual

Troubleshooting by Remote Controller
F4
2.14 " " Outdoor Unit: Humidity alarm
F4
Remote
Controller
Display
Applicable RQYQ-PY1
Models RQEQ-PY1
Method of The condition of the liquid refrigerant returning to the compressor is detected by the
temperature and pressure of any part during the cooling operation.
Malfunction
Detection
Malfunction When the following humidity condition continues for 30 minutes
Decision
&
Conditions
Supposed
Causes
125
• Humidity condition in the indoor unit
• Humidity condition in some indoor units
Faulty suction pipe thermistor
Faulty discharge pipe thermistor
Defect of high pressure sensor
Defect of indoor unit electronic expansion valve
Contamination of the air filter
SiBE341001
Troubleshooting