Ambient Temperature Sensor / Switch HVAC: Testing and Inspection

INSPECTION




1. INSPECT AMBIENT TEMPERATURE SENSOR




a. Measure the resistance.

NOTE:
- Touching the sensor even slightly may change the resistance value. Hold the connector of the sensor.
- When measuring the resistance, the sensor temperature must be the same as the ambient temperature.

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

If the result is notes specified, replace the ambient temperature sensor.