Ambient Temperature Sensor / Switch HVAC: Testing and Inspection

HEATING / AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR: INSPECTION





1. INSPECT AMBIENT TEMPERATURE SENSOR
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:





If the result is not as specified, replace the ambient temperature sensor.
NOTICE:
- 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).