Alliance Laundry Systems SWT520*M - Washer will Not Fill (Pressure Switch Diagnostic)

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Troubleshooting (MDC Models)
43. Washer Will Not Fill (Pressure Switch Diagnostic)
Is the lid closed?
Is there
120 or 240* volts AC
between terminal
"H4-5" on the control
and neutral?
Is there
120 or 240* volts AC
between pressure
switch terminal 2 and
neutral?
Is there
120 or 240* volts AC
between pressure
switch terminal 1 and
neutral?
Close lid and
check switch for
continuity.
Refer to Washer
will not fill (mixing
valve diagnostics)
*Refer to machine serial plate for correct voltage.
Check wiring
between control
board and
pressure switch.
Check for proper
function of
pressure switch,
pressure hose and
accumulator.
Replace if
necessary.
Check wiring
between pressure
switch and lid
switch.
Yes
No
Yes
Yes
No
Yes
No
No
TLW303S
(1)
(2)
(3)
(4)