Humidifier System Abnormality - Daikin VRV RXYMQ-A Series Service Manual

Troubleshooting by Error Code

5.10 Humidifier System Abnormality

Applicable FXFSQ-AR, FXDQ-PD, FXDQ-ND, FXMQ-PB, FXMQ-AR
Models
AF
Error Code
Method of Error
Water leakage from the humidifier system is detected based on float switch ON/OFF operation
Detection while the compressor is not in operation.
Error Decision
The float switch changes from ON to OFF while the compressor is not in operation.
 Error code is displayed but the system operates continuously.
Conditions
Supposed  Humidifier unit (optional accessory) leaking
 Defective drain piping (upward slope, etc.)
Causes
 Defective indoor unit control PCB
Troubleshooting
176
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Field drain
YES
piping has a defect such as
upward sloping.
NO
A humidifier
YES
unit (optional accessory) is
installed on the
indoor unit.
NO
SiME332106E
Modify the drain piping.
Check if the humidifier unit is
leaking.
Defective indoor unit
control PCB (A1P).
Part 6 Service Diagnosis