Ice Machine Cycles Into Harvest Before Water - Koolaire STH045 8/15 Technician's Handbook

Ice Machine Cycles Into Harvest Before
Water loses Contact with the Harvest
Float Switch
Step 1 Disconnect power to the ice machine, remove
the electrical panel to allow viewing of the control
board lights and disconnect the harvest float switch
from the control board.
ICE THICKNESS FLOAT
SWITCH
Step 2 Reapply power and move the toggle switch to
ice to bypass the freeze time lock-in feature. Wait until
water flows over the evaporator, then refer to chart.
Result
The harvest light does not
come on and the ice
machine stays in freeze.
10 seconds into the freeze
cycle the ice machine cycles
from freeze to harvest and
the control board harvest
light energizes.
Part Number STH045 8/15
HARVEST FLOAT SWITCH
Correction
The ice thickness float
switch, connectors or wiring
are causing the malfunction.
Refer to float switch
diagnostics.
Replace the control board.
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