Drain Level Above Limit - Daikin SkyAir RZR-TA Series Service Manual

Troubleshooting by Error Codes

4.17 Drain Level Above Limit

AF
Error Code
Applicable FCQ-TA, FBQ-P
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
 Error in the drain pipe installation
Causes  Defective float switch
 Defective indoor unit PCB
 Defective connector connection
 Defective drain pump
Troubleshooting
236
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the drain
NO
pump kit
connected ?
YES
Is the
NO
drain pump
normal ?
YES
Is the
quantity of
YES
condensed water after
the drain pump is
stopped too
much ?
NO
Does
drain water flow
YES
backwards while
drain pump is
stopped ?
NO
SiUS281811EA
Check the connector X15A.
Check the drain pump piping.
Check the drain water discharge
system.
Check if drain-up height and
horizontal pipe length exceed
specifications.
The trap of the drain water
discharge system is not installed
correctly.
Replace the indoor unit control
PCB(A1P).
Part 6 Service Diagnosis