160 Part Number 000014797 Rev02 05/18
DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY
Ice Machine Does Not Cycle Into Harvest when Water
Contacts the Ice Thickness Control Probe
Step 1 Bypass the freeze time lock-in feature by
moving the ON/OFF/WASH switch to OFF and back to ON.
Wait until the water starts to flow over the evaporator.
Step 2 Clip the jumper wire to the ice thickness probe
and any cabinet ground.
Step 2 Jumper wire connected from probe to ground
Monitoring Harvest Light Correction
The harvest light comes on, and
6-10 seconds later, ice machine
cycles from freeze to harvest.
The ice thickness control
circuitry is functioning properly.
Do not change any parts.
The harvest light comes on but
the ice machine stays in the
freeze sequence.
The ice control circuitry is
functioning properly. The ice
machine is in a six minute
freeze time lock-in. Verify
Step 1 of this procedure was
followed correctly.
The harvest light does not
come on.
Proceed to Step 3.
Step 3 Disconnect the ice thickness probe from
the control board terminal. Clip the jumper wire to the
terminal on the control board and any cabinet ground.
Monitor the harvest light.
control board terminal to ground
Monitoring Harvest Light Correction
The harvest light comes on, and
6-10 seconds later, ice machine
cycles from freeze to harvest.
The ice thickness probe is
causing the malfunction.
The harvest light comes on but
the ice machine stays in the
freeze sequence.
The control circuitry is
functioning properly. The ice
machine is in a six minute
freeze time lock-in (verify step 1
of this procedure was followed
correctly).
The harvest light does not
energize.
The control board is causing the
malfunction.
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