Drain System Abnormality - Daikin 2MKS40G2V1B Service Manual

Troubleshooting for SA Indoor Unit - FFQ Series
6.4

Drain System Abnormality

AF
Remote
Controller
Display
Method of Water leakage is detected based on the float switch ON/OFF changeover while the compressor
is not operating.
Malfunction
Detection
Malfunction When the float switch changes from ON to OFF while the compressor is OFF
Decision
Conditions
Supposed
Causes
Troubleshooting
227
Error in the drain pipe installation
Defective float switch
Defective indoor unit PCB
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
SiBE12-816_D
The float switch may be
defective. Check to see 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 to see if the
drain-up height and the
horizontal pipe length
exceed the specifications.
(R14222)
Service Diagnosis