Daikin FAQ100BVV1B [197/381] Malfunctioning drain system af

Daikin FAQ100BVV1B [197/381] Malfunctioning drain system af
ESIEN05-04 Error Codes
Part 3 Troubleshooting 3–35
4
5
1
3
2.4 Malfunctioning Drain System (
AF
)
Error code AF
LED indications The table below shows the LED indications.
Error generation The error is generated when the float switch changes from ON to OFF while the compressor is OFF.
Causes The possible causes are:
Q Error in the drain pipe installation
Q Malfunctioning float switch
Q Malfunctioning indoor unit PCB.
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Operation HAP (green) HBP (green)
Normal
cc
Malfunctioning
cc
Is
water
drainage system
normal?
Is
drain-up
kit installed?
Is
drain pump
normal?
Does drain
water flow in reverse
during non-
operation?
Is
amount
of circulated drain
water excessive after
pump stops
operation?
Clogged drain water discharge
system
Clogged drain pump
Faulty float switch
Replace indoor unit PCB.
Check to see if drain-up height
and horizontal pipe length
exceed specifications.
Check jumper connector X15A.
Check drain pump and drain
pipe.
Check water drainage system.
Check to see if drain-up height
and horizontal pipe length
exceed specifications.
Faulty trap in water drainage
system
Replace indoor unit PCB.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
In FHQ and FAQ problems can also
occur in the optional drain-up kit.
Possible failure of float switch.
Check to see if drain-up height
and horizontal pipe length
exceed specifications.
NO
Are float
switch and drain
pipe normal?

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