Service manual

46 800168
Section 3 Troubleshooting (MDC Models)
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
20. NO VISIBLE DISPLAY ON CONTROL
Control Has No Visible Display
The electronic control has no
LED or VFD functioning on
the control board.
Is the power cord
plugged in?
Plug unit into an
outlet and check
for proper supply
voltage.
No
Yes
(1)
No
Is there 24 Volt
AC at the output side of
the transformer?
Is there
120 AC to the
primary of the
transformer?
No No
(2) (3)
Check wiring to
the primary of the
transformer.
Yes Yes
Correct wiring
between
transformer and
control board.
Replace
transformer.
Make sure "H1"
connector is
seated properly.
Replace control.
Yes
Is there 24 Volt AC
across terminals "H1-1"
and "H1-3" control
board?
FLW298S