Drain Level Above Limit - Daikin REYQ-TA Series Service Manual

Troubleshooting by Error Code

3.14 Drain Level above Limit

AF
Error Code
Applicable
FXFQ, FXZQ, FXEQ, FXDQ, FXMQ
Models
Method of Error Water leakage is detected based on float switch ON/OFF operation while the compressor is not in
Detection operation.
Error Decision When 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
Causes
Troubleshooting
191
Humidifier unit (optional accessory) leaking
Defective drain pipe (upward slope, etc.)
Defective indoor unit main PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Field
drain piping
has a defect such as
upward sloping.
NO
A
humidifier
unit (optional
accessory) is installed
on the indoor
unit.
NO
YES
YES
SiUS371614E
Modify the drain piping.
Check if the humidifier unit is
leaking.
Defective indoor unit main PCB
(A1P).
Service Diagnosis