Most of the auto air conditioner models have a sensor or switch for sensing temperature. It comes as part of the car's air conditioner system and detects the temperature of the AC evaporator. You will find the switch right next to the evaporator for accessibility. It monitors the temperature of the evaporator and reacts when the car experiences an adverse change. Your car AC will start malfunctioning when you have problems with the evaporator temperature sensor. You can tell that the system is about to fail and that it needs mechanic repairs by observing these telltale signs.
The AC Stops Blowing Cold Air
A failing AC sensor typically fails to blow cold air into the car. When the switch fails, it cannot sense the correct temperature of the evaporator. Therefore, the entire system cannot detect the ambient temperature and align with the operation to cool them down. Consequently, you will have a hot and stuffy car when you need it to be cold. Look for an auto mechanic to fix it.
The Temperature Is Not Constant
When the sensor is efficient, you will have a constant temperature. The temperature depends on the message transmitted to the unit's computer system. If the sensor is behaving inconsistently, it will send erratic signals to the computer. As a result, your temperatures will switch from comfortable and cool to hot and bothersome constantly. The fluctuation is not good for the car. The fluctuation puts additional strain on the air conditioning system, and failure to have a mechanic address it might shorten its lifespan.
When the Thermostat Has Issues
A faulty thermostat can lead to issues with the temperature sensor. Thermostat issues are apparent when the unit cycles on and off intermittently during the periods of activation. For example, when your car is too hot or too cold, the AC will start acting strange by either turning itself on or off before achieving the desired temperature.
When the Sensor Is Displaced
Displacement is another common cause of trouble with the sensor. Often, this happens when a mechanical issue displaces the sensor from its original location. The sensor gauges the temperature of the air getting into the coil to determine whether to heat or cool the interior of your car. If the sensor is displaced, it will not have the needed data to set the machine for the needed function.
An auto mechanic can help you check the state of the sensor and determine whether it needs repairs. With their help, you will maximize your unit efficiency.