Service Section 6
6-8
Diagnosing an Ice Machine That Will Not Run
WARNING
High (line) voltage is applied to the control board
(terminals #8 and #2) at all times. Removing
control board fuse or moving the toggle switch to
OFF will not remove the power supplied to the
control board.
Step Check Notes
1 Verify primary voltage is supplied to ice
machine.
Verify that the fuse or circuit breaker is closed.
2 Verify control board fuse is OK. If the power light functions, the fuse is OK.
3 Verify ICE/OFF/WASH toggle switch
functions properly.
A defective toggle switch may keep the ice machine in
the OFF mode.
4 Verify the bin thermostat functions
properly.
A defective bin thermostat can falsely indicate a full bin of
ice.
5 Verify low DC voltage is properly
grounded.
Loose DC wire connections may intermittently stop the ice
machine.
6 Replace the control board. Be sure Steps 1-6 were followed thoroughly. Intermittent
problems are not usually related to the control board.
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