Drain System Abnormality - Daikin MKS-T Series Service Manual

SiSG121917E
6.5

Drain System Abnormality

AF
Error Code
Method of Error
Water leakage is detected based on the float switch ON/OFF changeover while the compressor
Detection is not operating.
Error Decision The float switch changes from ON to OFF while the compressor is OFF
Conditions
Supposed
 Error in the drain pipe installation
Causes  Defective float switch
 Defective indoor unit PCB
Troubleshooting
Part 6 Service Diagnosis
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
Troubleshooting for MSP Duct Type Indoor Unit
NO
NO
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 (control PCB). Check
if the drain-up height and
the horizontal pipe length
exceed the specifications.
(R24692)
132