S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice
S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice
S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice
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Section 6 Electrical System<br />
Diagnosing An <strong>Ice</strong> Machine That Will Not Run<br />
! Warning<br />
High (line) voltage is applied to the control board<br />
(terminals #55 and #56) at all times. Removing<br />
control board fuse or moving the toggle switch to<br />
OFF will not remove the power supplied to the<br />
control board.<br />
Step Check Notes<br />
1 Verify primary voltage supply to ice<br />
machine.<br />
Verify that the fuse or circuit breaker is closed.<br />
2 Verify the high-pressure cutout is closed. The H.P.C.O. is closed if primary power voltage is present at terminals<br />
#55 and #56 on the control board.<br />
3 Verify control board fuse is OK. If the bin switch light functions, the fuse is OK.<br />
4 Verify the bin switch functions properly. A defective bin switch can falsely indicate a full bin of ice.<br />
5 Verify ICE/OFF/CLEAN toggle switch<br />
functions properly.<br />
A defective toggle switch may keep the ice machine in the OFF mode.<br />
6 Verify low DC voltage is properly<br />
grounded.<br />
Loose DC wire connections may intermittently stop the ice machine.<br />
7 Replace the control board. Be sure Steps 1-6 were followed thoroughly. Intermittent problems are<br />
not usually related to the control board.<br />
Part Number 80-1634-3 6-27
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