Daikin REMQ14PY1 [280/491] Caution be su re to t u rn off power s witch b efore connect or di s connect connector or p a rt s d a m a ge m a y b e occ u rred

Daikin REMQ10PY1 [280/491] Caution be su re to t u rn off power s witch b efore connect or di s connect connector or p a rt s d a m a ge m a y b e occ u rred
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(V2778)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
A short
circuit connector is
connected to X8A.
Replace float switch.
Modify the float switch's
connection and turn on again.
Connect the drain pump and
turn on again.
Check the drain piping for
clogging or upward slope, etc.
Replace indoor unit PC board.
Replace the drain pump or
check for dirt, etc.
Connect either a short circuit
connector or float switch and
turn on again.
YES
YES
YES
YE
S
YES
Defect of indoor unit PC board.
Loose connection of connector.
NO NO
NO
YES
YES
NO
NO
YES
NO
YES
NO
NO
NO
Provide 220~240V power
supply.
YES
NO
Is power supply
220~240V provided?
The float
switch is
connected to X8A of the
indoor unit PC
board.
The
float switch
contact is forming a
short circuit (continuity
check with X8A or X15A
disconnected)
Water builds
up in the drain pan.
The
drain pump is
connected to X25A or
terminals Y1 and Y2 of the
indoor unit PC
board.
The
drain pump works
when the power supply is
reset for the indoor
unit.
The
voltage of
terminals Y1 and
Y2 or X25A is 220~240
V (within 5 minutes of
resetting the power
supply).
Becomes
normal when X8A of
the indoor unit PC board is
short circuited
The float
switch functions
normally.

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