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154 Part Number: 000015430 Rev 02 5/20
The initial numbers displayed are constantly changing
and are greater than 3000.
When the initial reading is 300 or lower and the tap test
reading exceeds the initial reading by 3000 or more, the
ice thickness probe and control board are both operating
correctly.
The initial numbers displayed do not change or initial
numbers did not increase by 3000 during tap test.
• Verify the ice thickness probe connector is properly
plugged into the board and the ice thickness probe
wiring is correct. If the wiring is incorrect replace the
ice thickness probe.
Ice Probe Connector On Control Board
Pin 1 (+) Red
Pin 2 (-) Black
Pin 3 Twisted Wire
10. Unplug the ice thickness probe and set a VOM to DC
voltage scale - Measure voltage across Pin 1 (+) Red
Wire and Pin 2 (-) Black Wire. Refer to “Electronic
.
A. Voltage measures 3.25 to 3.35 VDC = Replace ice
thickness probe.
B. Voltage does not measure 3.25 to 3.35 VDC =
Replace the control board.
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