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Before Calling for Service
Problem
Ice machine produces shallow or
incomplete cubes, or the ice
fill pattern on the evaporator is
incomplete.
Low ice capacity.
Safety Limit Feature
In addition to the standard safety controls, your
Manitowoc ice machine features built-in safety limits that
will stop the ice machine if conditions arise which could
cause a major component failure.
Before calling for service, re-start the ice machine using
the following procedure:
1. Move the ON/OFF/ WASH switch to OFF and then
back to ON.
A. If the safety limit feature has stopped the ice
machine, it will restart after a short delay.
Proceed to step 2.
B. If the ice machine does not restart, see "Ice
machine does not operate" on the previous
page.
2. Allow the ice machine to run to determine if the
condition is reoccurring.
A. If the ice machine stops again, the condition has
reoccurred. Call for service.
B. If the ice machine continues to run, the condition
has corrected itself. Allow the ice machine to
continue running.
5-2
Possible Cause
Ice thickness probe is out of adjustment.
Water trough level is to high or too low.
Water float valve filter screen is dirty.
Water filtration is poor.
Hot incoming water.
Water float valve is not working.
Incorrect incoming water pressure.
Ice machine is not level.
Water float valve filter screen is dirty.
Incoming water supply is shut off.
Water float valve stuck open or leaking.
The condenser is dirty.
High air temperature around ice machine.
Inadequate clearance around the ice
machine.
Objects stacked around ice machine,
blocking airflow to condenser.
To Correct
Adjust the ice thickness probe.
Check the water level.
Remove and clean the filter screen.
Replace the filter.
Connect the ice machine to a cold water
supply.
Remove the water float valve and clean it.
Water pressure must be 20-80 psi (137.9 -
551.5 kPA).
Level the ice machine.
Remove and clean the filter screen.
Open the water service valve.
Remove the water float valve and clean it.
Clean the condenser.
Air temperature must not exceed 110°F
(43.3°C).
Provide adequate clearance.
Remove items blocking airflow.
Part Number 000001774 07/08
Section 5
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