Daikin RXQ12AHR Service Manual page 192

Troubleshooting by Error Code
Note(s)
186
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
FXFSQ-AR X15A
FXMQ-PB X15A
YES
NO
2: Drain pump (M1P)
connector
X25A
X25A
SiAF341904E
Check the drain piping for
clogging or upward slope, etc.
Replace the indoor unit control
PCB (A1P).
Replace the drain pump or
check for dirt, etc.
3: Drain pump (M1P)
Note
voltage
13 VDC
13 VDC
Part 6 Service Diagnosis
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