As a result, the system will have difficulty providing dependable cooling to every room in the house. Given its function, when a sensor is dislodged it won’t be able to measure the temperature of the passing air accurately. If this is the case, expect things to go haywire. This erratic cycling can also put unnecessary stress on the unit, shortening its lifespan.ĭisplaced sensor. A faulty sensor could be displaced from its original position. Your AC system, in turn, won’t provide sufficient cooling. Whether the room feels too hot or too cool, the thermostat will turn itself on and off before the room has reached the desired temperature. When you have a faulty thermostat, the sensor inside it could cycle on and off intermittently during proper activation periods. Or, it could simply be because your thermostat is an older model and has already surpassed its lifespan. It could also be a result of improper installation, where the wires are loose and aren’t tightly affixed to your thermostat. One reason for this is the build-up of grime or dust inside it. Here’s how you can tell:įaulty thermostat. Having a faulty thermostat can cause the AC sensor to not work properly. When this occurs, you might be dealing with a faulty or failing sensor. In this case, the system will continue to blow cold air, making your rooms uncomfortably cold. You’ll know something is wrong if your AC doesn’t turn off even when the indoor space has reached the temperature you’ve set. If the air passing the sensor is cooler or at the same temperature as what’s set on your thermostat, the compressor-and your AC unit-will shut off. This is where your system blows cool air into your living spaces. If the air is warmer than the desired temperature, the sensor will activate the compressor. In turn, the sensor reads the temperature and checks if it matches what you’ve set on the thermostat. Indoor air moving toward the return vents passes by the sensor and coils. The AC sensor on your thermostat is located near the evaporator coils. We’ll also touch on the other AC problems you need to watch out for. explains the signs that tell you your AC unit has a sensor issue, and the possible solution to this problem. In this blog, local HVAC maintenance contractor R.A.
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December 2022
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