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Ambient Temperature Sensor / Switch HVAC: Testing and Inspection





HEATING / AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR: INSPECTION

1. INSPECT THERMISTOR ASSEMBLY (AMBIENT TEMPERATURE SENSOR)





(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





HINT
As the temperature increases, the resistance decreases (refer to the graph).

NOTICE:
* Touching the sensor even slightly may change the resistance value. Be sure to hold the connector of the sensor.
* When measuring the resistance, the sensor temperature must be the same as the ambient temperature.

If the result is not as specified, replace the thermistor assembly (ambient temperature sensor).

Text in Illustration





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