54
70291301
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Electronic Control Troubleshooting
32. Will Not Start/Continue Running – OPL Microprocessor Control
T099D
Gas, steam and
electric heat.
Single and three phase
supply.
Is power supplied to
unit?
Is there voltage to
output of primary
fuse(s)?
Is there voltage
across terminals 1 & 2
on primary of
transformer?
Is there voltage
across terminals 2 & 3
of transformer
secondary?
Is there voltage to input
of secondary fuse?
Is there voltage to
output of secondary
fuse?
Is there voltage to
N.O. terminal of door
switch?
With door closed is
there voltage to COM
of door switch?
Is there voltage to
N.O. of lint panel
switch?
Is there voltage to
COM of lint panel
switch with lint panel
closed?
Is there voltage at
terminal 8 of OPL
Micro?
Change primary
fuse.
Correct wiring
between transformer
and primary fuse.
Replace
transformer.
Correct wiring
between secondary
fuse and
transformer.
Replace secondary
fuse.
Correct wiring
between N.O.
terminal of door
switch and
secondary fuse.
Check for proper
operation, replace
door switch if
necessary.
Correct wiring
between N.O. of
lint panel switch
and COM of
door switch.
Check for proper
operation and
replace lint panel
switch if necessary.
Correct wiring
between terminal
8 of OPL Micro
and COM of lint
panel switch.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Continued on next
page.
Reference voltage to
supply neutral.
Note: Reference voltage to
transformer secondary neutral
terminal 3.
Connect supply
and run unit.
Is there voltage to input
of primary fuse(s)?
Correct wiring
between primary
fuse and supply.
T0
99
D