150 Part Number STH034 3/12
Refrigerated Cabinet
TEMPERATURE THERMISTOR - NOZZLE,
CABINET OR DEFROST
Function
Supplies input to control board to indicate nozzle,
cabinet or defrost temperature. The control board
energizes and de-energizes the compressor based on
input from the thermistors.
Specifications
5,000 Ohms ± 2% at 25°C (77°F)
16,330 Ohms ± 2% at 0°C (32°F)
Check Procedure
NOTE: Use a multimeter to check operation.
1. Reboot machine by moving toggle switch off/on.
2. Inspect for correct wiring.
3. Isolate by disconnecting the wiring connectors.
4. Check continuity across the terminals with an
ohm meter.
• Resistance = Thermistor is good
• Open (OL) = Replace thermistor
NOTE: These thermistors are identical. Swapping the
thermistor connections at the IO board can be used for
diagnostics.
To Next Page
Loading...
