20
Bin Thermistor:
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. You will typically receive
an assembly with the thermistor and plated tube already assembled.
IMPORTANT
Once the bin thermistor detects to stop making ice, the electronic control will continue in ice production or harvest
until a harvest cycle is complete (see Section 1.11, Operation - Selector Switch in the “ON” Position).
The following will happen in the event of a thermistor failure:
If the bin thermistor fails, all loads will be shut off and the unit will not run.
1.
If the bin thermistor senses temperature outside of 25-140 degrees F, all loads will be shut off and the unit will not run.
2.
The control LED will blink two times every five seconds.
3.
The thermistor can be checked by use of a multimeter with the ability to read resistance. To check the thermistor:
Disconnect and remove thermistor from unit.
1.
Use a reference temperature point that is know (such as an ice bath) and measure the resistance across the wire leads.
2.
Compare the recorded resistance with Table C.
3.
If measured resistance falls outside the resistance given in Table C within 4% of the value, the thermistor is bad and will need to be
replaced.
Removing the Bin Thermistor and Sleeve:
Remove any ice and drain the reservoir by pulling the drain plug.
1.
Disconnect power, water line, and drain line.
2.
Remove the back panel and lower shroud (see Figure 3.3).
3.
Disconnect the bin thermistor connector at the electronic controller.
4.
Remove the escutcheon panel from inside the unit.
5.
Remove the cutter-grid (see Section 6.1, Cutter-Grid).
6.
Remove the ice deflector.
7.
Remove the reservoir (see Section 6.2, Reservoir).
8.
Remove the bin thermistor and sleeve assembly by removing the screws securing it to the bin of the Ice Maker .
9.
Feed the thermistor wire out through the opening in the back of the unit.
10.
Remove the sensing tube from the unit through the opening in the back.
11.
The bin thermistor will slide out of the sleeve.
12.
Installing the Bin Thermistor:
Reverse the removal procedure for installation (see above). Be sure to thoroughly tighten the screw holding the thermistor for
proper bracket to thermistor contact.
SySTEM COMpONENTS
Summary of Contents for RF151
Page 1: ...1 ICE MAker Service manual Models RF15I ...
Page 2: ......
Page 28: ...26 Figure 7 1 Ice Maker Wiring Diagram WIRING ...
Page 40: ...38 NOTES ...
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