Ice-O-Matic CIM2046 Technical & Service Manual page 42

ELEVATION SERIES CIM CUBER
when the contacts are open. The Thermistor is used to measure the temperature of the water in
the Sump during the Freeze Cycle. During the first 3 cycles following a full bin shut down or being
turned on (initial start‐up), the unit will perform an "Anti‐slush" shutdown of the Water Pump
for 20 seconds when the water temperature reaches 36 degrees F to reduce the possibility of
the water in the Sump slushing. The unit will perform an anti‐slush shut down of the Water
Pump any time the water temp reaches 28 degrees F.
Troubleshooting
When the High and Low Floats are in the down position, the contacts for the switches are closed
and the LED's on the Board should be illuminated.
As the water level rises, the floats rise with it and the contacts of the switches will open and the
LED's on the Board will go OFF. This can be verified by removing the Sump and checking first the
LED's on the Board. Without the presence of water, both floats should be in the down position
and the LED's on the Board should be illuminated. If one or both LED's are OFF, disconnect the
Float Switches at the connectors along with the Thermistor and remove the Float Housing by
gently pulling down on it from the ice drop zone.
Open the housing and examine each float for movement of the float and cleanliness. With a
meter set on continuity, verify the contacts on the float open and close with movement of the
float. If float is clean and contacts do not change with float movement, replace Float Switch
Housing Assembly. If one or both of the LED's remain OFF with Float Switches that are known to
be good, the Board or Wiring Harness may be the issue.
HIGH AND LOW FLOAT SWITCHES AND HOUSING
Low Float Switch LED
High Float Switch LED
Thermistor Connector
High Float Switch Connector
Low Float Switch Connector
40