Part Number 80-1505-3 6/11 133
DIAGNOSING AN ICE MACHINE HEAD SECTION
THAT WILL NOT RUN
1. Verify primary voltage is supplied to ice machine
and the fuse/circuit breaker is closed.
2. Verify control board fuse is okay. If the bin switch
or water level probe light functions, the fuse is
okay.
3. Verify all bin switches function properly. A
defective bin switch can falsely indicate a full bin
of ice.
4. Verify ICE/OFF/CLEAN toggle switch functions
properly. A defective toggle switch may keep the
ice machine in the OFF mode.
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.
High (line) voltage is applied to the control board
(terminals #55 and #56) at all times. Removing
control board fuse or moving the toggle switch to
OFF will not remove the power supplied to the
control board.