Daikin Aurora Series Service Manual page 184

Troubleshooting by Error Code
Note:
171
A
The drain
pump works when
the power supply is reset for
the indoor unit.
NO
The
voltage
of drain pump
terminals (∗2) is in
accordance to the
criteria (∗3) (within 5
minutes of resetting
the power
supply).
YES
∗1: Float switch (S1L) /
Model
short circuit connector
FXFQ-T X15A
FXFQ-P X15A
FXZQ-TA X15A
FXZQ-M
FXUQ-P X15A
FXEQ-P X15A
FXDQ-M
FXSQ-TA X15A
FXMQ-PB X15A
YES
NO
∗2: Drain pump (M1P)
connector
X10A
X25A
X102A
X8A X25A
X25A
X25A
X8A X25A
X25A
X25A
SiUS341802E
Check the drain piping for
clogging or upward slope, etc.
Replace the indoor unit main
PCB (A1P).
Replace the drain pump (M1P)
or check for dirt, etc.
∗3: Drain pump (M1P)
voltage
13 VDC
220-240 VAC
13 VDC
220-240 VAC
13 VDC
13 VDC
220-240 VAC
13 VDC
220-240 VAC
Service Diagnosis