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The bin thermistor is made up of a soft copper tube body and placed inside a plated
copper sensing tube. This plated tube is then secured to the side of the ice maker's bin to
detect the ice bin level. The bin thermistor gives voltage input to the electronic control.
This input is processed through the electronic control to switch the ice maker into stop
making ice or start making ice. The thermistor must be fully inserted into the plated
sensing tube for proper detection.
Once the bin thermistor detects a stop making ice, the electronic control will
continue in ice production or harvest until a harvest cycle is complete.
The following will happen in the event of a thermistor failure:
1.
If a bin thermistor fails, all loads will be shut off and the unit will not run.
2.
If the bin thermistor senses temperature outside of 25-140 deg. F , all loads will be
shut off and the unit will not run.
The thermistor can be checked by use of a multi-meter with the ability to read resistance.
To check the thermistor:
1.
Disconnect and remove the thermistor and sensing tube from the unit.
2.
Use a reference temperature point that is known (such as an ice bath) and measure
the resistance across the wire leads.
3.
Check the recorded resistance with that in the table 5.1>
If measured resistance falls outside the resistance given in the table 5.1 within 4% of the
value, the thermistor is bad and will need to be replaced.
Bin thermistor and sleeve removal:
1.
Remove any ice and drain the reservoir by pulling the drain plug.
2.
Disconnect power, water line, and drain line.
3.
Remove the access panel and rear panel from the rear of the unit (see figure 3.3)
4.
Disconnect the red and black wires to the "BIN THERMISTOR" terminals on the
electronic control (there should also be a tag on the gray wire insulation with the
part number 41006204 for the bin thermistor).
5.
From the inside the unit, remove the escutcheon panel.
6.
Remove the grid-cutter (see section6.1).
7.
Remove the ice deflector.
8.
Remove the reservoir.
9.
Remove the bin thermistor and sleeve assembly by removing the screws securing it
to the icemaker's bin.
10. Feed the thermistor's wire out through the opening in the rear of the unit.
11. Remove the sensing tube from the unit out the opening in the rear.
12. The bin thermistor will slide out of the sleeve.
See section 1.11
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