Humidity Alarm - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller

2.11 Humidity Alarm

F4
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error The condition of the liquid refrigerant returning to the compressor is detected by the
temperature and pressure of any part during the cooling operation.
Detection
Error Decision When the following humidity condition continues for 30 minutes
Conditions
&
Supposed
Causes
120
• Humidity condition in the indoor unit
• Humidity condition in some indoor units
Defective suction pipe thermistor
Defective discharge pipe thermistor
Defective high pressure sensor
Defective indoor unit electronic expansion valve
Contamination of the air filter
SiBE341027
Service Diagnosis