Af Drain Level Above Limit - Daikin R71FUV1 Service Manual

Troubleshooting by Remote Controller
AF
3.13
Remote Controller Display
AF
Applicable Models
FMCQ, FMDQ
Method of Error Detection
Water leakage is detected based on float switch ON/OFF
operation while the compressor is in non-operation.
Error Decision Conditions
When the float switch changes from ON to OFF while the
compressor is in non-operation.
Supposed Causes
Humidifier unit (optional accessory) leaking
Defective drain pipe (upward slope, etc.)
Defective indoor unit PCB
Troubleshooting
Caution
Field
drain piping
has a defect such as
upward sloping.
NO
A
humidifier
unit (optional
accessory) is installed
on the indoor
unit.
NO
Drain Level above Limit
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
YES
Si20-701_B
Modify the drain
piping.
Check if the
humidifier unit is
leaking.
Replace the
indoor unit PCB.
107