140 Part Number 80-1230-9 10/10
SN012/SN020/SF0400/SN0450/SF0600/SN0650/
SF0900/SN0950/SF1200/SN1250
Diagnosing An Ice Machine That Will Not Run
The following sequence describes the normal start up
procedure for the ice machine when line voltage is
disconnected then reconnected to the ice machine.
1. Power is supplied to the control board.
2. The control board lights race (energize/de-
energize in sequence) to indicate the ice machine
is in a 5 minute delay mode.
3. When the 5 minute delay ends the ice machine
starts. The following lights are energized:
• Nugget or
Flaker depending on type of evaporator
• HES #1
• HES #2
• Water OK
The HES #1 light will de-energize and re- energize as
ice passes beneath the ice damper.
When the ice damper lifts approximately 45 degrees
HES #2 de-energizes and the ice machine shuts off
immediately on full bin. A 5 minute time delay is
initiated, which prevents the ice machine from
immediately restarting.
High (line) voltage is applied to the control board
(terminals #39 and #90) at all times. Removing
control board fuse or moving the toggle switch to
OFF will not remove the power supplied to the
control board.
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