Troubleshooting by Error Code
5.8
Humidifier System Abnormality
Applicable
FXFSQ, FXMQ-PB
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
Causes
Defective drain piping (upward slope, etc.)
Defective indoor unit control PCB
Troubleshooting
198
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
SiAF341904E
Modify the drain piping.
Check if the humidifier unit is
leaking.
Defective indoor unit
control PCB (A1P).
Part 6 Service Diagnosis