Blocked airflow, refrigerant issues, and faulty electrical components are common causes that can lead to your AC compressor shutting off after a short period. Blocked airflow can be caused by clogged air filters or closed air vents, leading to the compressor overheating and shutting off.
If the thermostat is not functioning correctly, it might be misreading the temperature in your space, causing the compressor to shut off prematurely. Another possibility is a clogged air filter. When the filter is dirty, it restricts the airflow, causing the compressor to overheat and shut off as a safety measure.
If the thermostat is not functioning correctly, it might be misreading the temperature in your space, causing the compressor to shut off prematurely. Another possibility is a clogged air filter. When the filter is dirty, it restricts the airflow, causing the compressor to overheat and shut off as a safety measure.
Typically, short cycling can come from an incorrect unit size or programmable thermostat problems. However, it could also be caused by neglected routine maintenance or something that might require a simple repair.
Possible triggers of short cycling include a high ambient temperature, a low oil level, the use of the wrong type of oil, clogged or dirty oil filters, and even a dirty cooler — all factors that overwork and stress the compressor motor.
This can happen due to several reasons, the most common being clogged air filters, refrigerant leaks, and faulty electrical connections. When the air filter becomes clogged, it can restrict airflow, which can cause the compressor to overheat and shut off prematurely.
Thermostat problems, dirty air filters, refrigerant leakage, electrical problems, overheating, and short cycling can all shut down an air conditioner. By identifying and solving these common issues, you can keep your AC running smoothly and efficiently to provide a cool and comfortable home.
Most air conditioners come with a reset button attached to the compressor unit. Typically, it is a red button and is very visible to an onlooker. To reset your air conditioner, all you have to do is press the button, and you won't have to worry about all the heavy lifting.
A miscalibrated, malfunctioning, or poorly placed thermostat can cause your AC to short cycle, as it may not correctly register the temperature. If your thermostat is too close to a supply vent, the cold air coming out of the vent will quickly make it think your home is cooler than it is.
Poor Airflow
If something blocks the flow of air, your AC needs to go into overdrive to make up for it, which could result in it overheating. And when your AC overheats, it shuts off to give the system a chance to cool down. Once cool, it turns back on again, and the vicious cycle of short cycling continues.
If only the pulley is rotating, the compressor clutch is having an issue, which could be stemming from several sources – a blown fuse, bad clutch oil, low-pressure lockout, or an open wire in the oil.
One of the more common causes of an AC breaker tripping is a problematic compressor start-up. If your compressor is having trouble starting up, it can draw too much current and cause the breaker to trip. This problem is usually caused by faulty wiring or parts, such as a capacitor or motor winding.
If your AC unit is low on refrigerant, it can't effectively cool your home, causing the system to overheat and shut down prematurely. Conversely, an overcharged system can lead to similar issues, as excessive pressure builds up, triggering the safety mechanisms to turn off the condenser fan.
As mentioned, one of the more common reasons for an AC unit needing a reset is due to the protection circuit breaker inside the unit kicking in. This usually happens after a power outage occurs, and this failsafe is in place to prevent fires and explosions from occurring from a power surge.
The location of the reset button on your compressor can vary depending on the model and manufacturer. Typically, it is located on the motor or near the motor housing. Look for a small red or black button that is often labeled “reset.”
Reset the AC Using the Isolation Switch
You can find it on the wall beside the unit or at the condenser. The isolation switch looks like an ordinary light switch with a knob. Once you locate it, turn the knob to the off position and leave it for at least 30 minutes up to an hour.
Should I turn my AC off if it is short cycling? No, this is not necessary unless the evaporator coils are frozen, in which case, turn off your air conditioner to let the coils thaw.
Common Causes for AC Short-Cycling
Here are some common issues to watch out for: Clogged air filters. Electrical problems. Thermostat issues.
Central AC Short Cycling
Homeowners spend between $75 and $600 to deal with short cycling issues in their central AC systems.
It often indicates underlying issues such as refrigerant problems, electrical faults, or thermostat malfunctions. Addressing short cycling promptly can save energy and extend the lifespan of your AC system. DIY solutions include replacing air filters and cleaning condenser coils.
AC/ Air Conditioner. Short cycling occurs when your air conditioner shuts off before it can complete its entire cooling cycle. When your AC turns on, it will usually need to run for anywhere from 10 to 20 minutes to cool your home completely.
But if it's subject to overheating or has become worn out, it may indicate this by shutting off frequently. An air conditioner's compressor can break for several possible reasons, such as a blown fuse (commonly caused by the compressor tripping the breaker), a broken motor overload protector, or burnt wiring.