Drain System Abnormality - Daikin RMXS-L Series Service Manual

SiUS181305E
5.4

Drain System Abnormality

AF
Error Code
Method of Error
Water leakage is detected based on the float switch ON/OFF changeover while the compressor is
not operating.
Detection
Error Decision When the float switch changes from ON to OFF while the compressor is OFF
Conditions
 Error in the drain pipe installation
Supposed
 Defective float switch
Causes
 Defective indoor unit PCB
Troubleshooting
Troubleshooting
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Are
the float switch and
the drain pipe
normal?
YES
Is the
water drain system
normal?
YES
NO
NO
Troubleshooting for FFQ Series
The float switch may be
defective. Check if the
drain-up height and the
horizontal pipe length
exceed the specifications.
Clogged water drain
system, clogged drain
pump, or faulty float switch
Replace the indoor unit
PCB. Check if the drain-up
height and the horizontal
pipe length exceed the
specifications.
(R16022)
170