Thermistor; Fan Motors - Vinotemp WM-1500HZD Service Manual

2. Locate the red and white wires going to the electronic controller.
3. Set the voltmeter to the AC 200 scale.
4. Touch and hold one voltmeter probe to one of the wire terminals, then
touch and hold the other probe to the other wire terminal
5. The voltmeter should show a reading of 115 volts.
C. Output Live Voltage
1. In order to test the output of the electronic controller, the WINEMATE
cooling unit must be plugged in and powered up.
2. The input voltage must read at least 110 volts.
3. Set the temperature 5° F above the ambient temperature.
4. Set the voltmeter to the AC 200 scale, and the voltmeter should read 0
volts.
5. Now warm the thermistor by hands for a while.
6. Locate the red and black wires leaving from the electronic controller.
7. Touch and hold one voltmeter probe to the red wire, then touch the other
probe to the black wire.
8. Now the voltmeter should read 115 volts.
9. If the readings are both correct the electronic controller is good.

5) Thermistor

1. Disconnect the thermistor connector from the electronic controller.
2. Set ohmmeter to the R x 10K scale.
3. Immerse the tip of the thermistor into ice water for five minutes
4. Touch the ohmmeter probes to the wire terminals on the connector. The
meter should indicate 27.3 below ± 10%.
5. Reconnect the thermistor.

6) Fan Motors

The WINEMATE 1500 & 2500 uses four fan motors to pull air across the
condenser and evaporator coils. The safest way to check one of the motors is
doing a resistance check. An alternate method is checking with live voltage.
A. Resistance
1. Unplug WINEMATE cooling unit or disconnect power.
2. Disconnect the fan motor wiring from the terminal block, remove one wire
at a time, and carefully label each wire.
3. Set the ohmmeter scale to the lowest setting. Touch and hold one
ohmmeter probe to one of the wire terminals, then touch and hold the
other probe to the other wire.
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