Ambient Temperature Sensor / Switch HVAC: Testing and Inspection

AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR: INSPECTION

1. INSPECT AMBIENT TEMPERATURE SENSOR





(a) Measure the resistance.

Standard resistance:





NOTICE:
* Touching the sensor even slightly may change the resistance value. Hold the connector of the sensor.
* When measuring the resistance, the temperature of the sensor and the ambient temperature sensor must be the same.

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