![]() Refrigerant travels through the lines, running to the outdoor unit. To cool a home, hot air passes over the indoor evaporator coil and heat is extracted. Resetting the limit switch located near the blower fan will stop the fan from blowing unless directed by the thermostat. This can happen if the fan limit switch is stuck in the override position. Faulty Fan Limit SwitchĮven when the correct fan settings are selected, the fan motor may continue running even when the air conditioner isn’t cycling. In households with multiple people making thermostat adjustments, the setpoint may be adjusted lower than usual, so the air conditioner will keep running to achieve this temperature even though you expect the system to turn off sooner. ![]() You will hear the indoor components running and feel hot air blowing from your vents, because the air conditioner isn’t on to produce cool air.Īlso, it may seem as though your air conditioner is constantly running because the set temperature is different than expected. Selecting the ON fan setting at the thermostat powers the blower motor and fan continuously instead of only when the cooling system cycles. It may appear that your air conditioner constantly runs when only the system fan is on. Electrical wiring can be damaged and wiring connections loosen, which disrupts communication between the thermostat and the air conditioner. Over time, thermostat sensors gather dirt, which prevents them from accurately reading the room temperature. Thermostats need to be replaced about every 10 years. Sometimes a stuck switch can be fixed, but typically you’ll need to have a technician replace the problematic switch. The compressor contactor can fuse in a closed position, allowing the condenser unit to keep on running with constant power. A stuck relay switch allows an electrical circuit to remain closed, constantly providing power to the air conditioner. Electrical IssuesĪir conditioners have a number of electrical components. If your air conditioner doesn’t shut down as expected, the following issues may be present within your HVAC system. Why Is My Air Conditioner Not Turning Off? If you allow your air conditioner to keep running, electrical power is wasted and your system sustains excessive wear and tear, which causes damage to components and malfunctions which creates the need for parts or the entire system to be replaced. If your cooling unit is constantly running for hours on end, immediate attention is needed. Once the set temperature is detected by your thermostat, the air conditioning unit should power down, ending the cooling cycle. Cooling cycles should occur about two to three times per hour, lasting around 15 to 20 minutes each. Is It Ok for an Air Conditioner to Run All Day?Įven when the temperature outside is extremely hot, your air conditioner should not keep running around the clock. If your air conditioner requires repair services from a professional technician, contact us to schedule an appointment or request emergency cooling repair. Williams Comfort Air explains the reasons why your air conditioning unit doesn’t turn off and what you can do to correct the problem. ![]() If your air conditioner won’t shut off, the issue likely stems from one of the following categories. When your air conditioning system keeps running and never seems to shut off, the problem could be linked to a number of malfunctioning components – frozen evaporator coils, a clogged air filter, a bad electrical relay switch that needs to be replaced, the fan blowing constantly, dirty condenser coils, a bad thermostat, or other problem with your HVAC system. When your air conditioner won’t shut off, it’s natural to worry about wasting electrical power as temperatures become too cool for comfort.
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