Daikin VRV EMERION RXYQ-AATJA Service Manual page 260

Troubleshooting by Error Code
Note(s)
253
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
FXZQ-TB X15A
FXUQ-PA X15A
FXEQ-P X15A
FXDQ-M X8A
FXSQ-TB X15A
FXMQ-PB X15A
FXMQ-TB X15A
YES
NO
2: Drain pump (M1P)
connector
X10A
X25A
X25A
X25A
X25A
X25A
X25A
X25A
SiUS342303E
Check the drain piping for
clogging or upward slope, etc.
Replace the indoor unit control
PCB (A1P).
Replace the drain pump (M1P)
or check for dirt, etc.
3: Drain pump (M1P)
voltage
13 VDC
13 VDC
13 VDC
13 VDC
220-240 VAC
13 VDC
220-240 VAC
13 VDC
Part 6 Service Diagnosis