No Visible Display On Control - ALLIANCE HWF561*E1102 Service

Section 3 Troubleshooting (NetMaster Models)

29. NO VISIBLE DISPLAY ON CONTROL

The electronic control has no
LED or VFD functioning on
the control board.
Is the power cord
plugged in?
Yes
(1)
Is there 24 Volt AC
across terminals "H1-1"
and "H1-3" control
board?
Yes
Make sure "H1"
connector is
seated properly.
Replace control.
64
Control Has No Visible Display
Plug unit into an
No
outlet and check
for proper supply
voltage.
Is there 24 Volt
No
AC at the output side of
the transformer?
Correct wiring
transformer and
control board.
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(2)
No
Yes
between
(3)
Is there
Check wiring to
120 AC to the
No
the primary of the
primary of the
transformer.
transformer?
Yes
Replace
transformer.
FLW298S
800168