144 Part Number Preliminary 6/11
Diagnosing an Ice Machine That Will Not Run
1. Verify primary voltage is supplied to ice machine
and the fuse/circuit breaker is closed.
2. Verify the high pressure cutout is closed.
3. Verify control board fuse is okay. If the micro or
display lights on the control board are energized
the fuse is okay.
4. Verify all bin switches function properly. A
defective bin switch can falsely indicate a full bin
of ice.
5. Perform control board, display board and touch
screen diagnostics. Be sure steps 1-6 were
followed thoroughly. Intermittent problems are not
usually related to the control board.
High (line) voltage is applied to the control board
(terminals #55 and #56) at all times. Removing
control board fuse or pressing the power button will
not remove the power supplied to the control board.
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