Daikin Super Multi Plus E-Series - Page 347

SiEN18-622 Troubleshooting for SkyAir Indoor Unit
Troubleshooting 335
Troubleshooting
NO
Remove the float switch from
X15A, short-circuit X15A, and
restart operation.
Is the
drainwater level
abnormally
high?
Does the drain
pump turn after restarting
operation?
Is a drain
pump connected to the
indoor unit PCB?
Is there continuity?
Is the
short-circuit
connector connected to
X15A on the indoor unit
PCB?
Is the float
switch connected to
X15A?
Is drain
raising mechanism
connected?
YES
Does
display of malfunction
“A3”appear?
220-240 VAC?
Continuity check of short-circuit
connector
Set to“emergency” and check
the voltage of X25A.
If “A3” is detected by a PC board
which is not mounted with X15A,
the PC board is defective.
(Q0412)
NO NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Short-circuit connector
connection
Short-circuit connector
replacement
Indoor unit PCB
replacement
Connect drain pump
Malfuncton of drain system
Froat switch connection
Float switch replacement
Indoor unit PCB
replacement
Drain pump replacement
Indoor unit PCB
replacement
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.