Alliance Laundry Systems SWT520*M - No Fill Analysis

64 39201
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Troubleshooting (EDC Models)
35. No Fill Analysis
(#) Numbers next to voltage checks
correspond to the locations marked
on the wiring schematic.
Turn on water.
Replace inoperative
coin drop.
NONO
NO
After checking for
correct wiring,
replace inoperative
lid switch.
If the problem still exists, refer to
these other troubleshooting guides:
"Electronic control has no visible display",
or "Coins ignored when entered".
NO
YES YES
Are
the water
lines turned
on?
YES
Is
the display
on?
Is the
coin counter
counting down
as coins are
entered in
the drop?
YES
YES
Check
voltage at
the lid switch
pnk/blu "COM"
to "H3-3",
is there
voltage?
(1)
Replace inoperative
wiring.
NO
Check
voltage at
the pressure
switch "1" PNK/BLU
and to "H3-3",
is there
voltage?
(2)
On mixing valve check and replace:
– Inlet screens.
– Wiring and connections.
– Replace coils or mixing valve.
– Check thermal protect and wiring
from thermal protect to "H3-3"
Open
control
panel
Replace pressure
switch or
pressure hose.
Replace electronic
control board.
NO
NO
YES
Voltage
check off
electronic control
board hot - ORG "H5-1"
to "H3-3" cold - GREY,
"H5-4" to "H3-3" warm -
"H5-1" and "H5-4"
to "H3-3",
is there
voltage?
Check
voltage at
the pressure
switch "2" BLU/WHT
and to "H3-3",
is there
voltage?
(3)
(5)
Temps
listed are
determined
by what water
temps have been
selected
YES
Replace inoperative
wiring.
NO
Check
voltage
at control
"H3-1" to "H3-3",
is there
voltage?
(4)
When checking
voltage to
neutral, check
between source and
"H3-3" since neutral
for mixing values is
through the thermal
protect on the motor.
YES
Washer is
not filling.
W370S