13 possible reasons why ac switches off automatically

Your samsung air conditioner turns itself off? Or your panasonic aircon turns off by itself? You come to the right place. We will show you 13 possible reasons why aircon turns off by itself.

1. Short Cycling

It happens when something inside the system keeps it from finishing a full cooling cycle. It makes it impossible to remain agreeable in your own home, and because the unit kicks on and off so oftentimes, it can likewise drive up your vitality charges altogether and diminishing your system’s life span.

At the point when this occurs, it causes it about impossible for your home to remain agreeable and it to can be a major channel on your vitality bills. Moreover, continuous on-and-off cycling can get your air conditioner through a great deal of pressure that can prompt breakdowns.

The most significant thing you can never really short-cycling is to consistently keep up your HVAC system with semiannual examinations and cleanings. During this cycle, a prepared specialist can spot likely issues and right them before you experience short-cycling issues.

Why is short cycling an issue?

You may not think that your AC starting up, running in brief, and then cycling back down, just to repeat the process before long, is that big of a deal. After all, you do not want your AC working all of the time, right? And your system should not wait for temperatures to get too high.

The fact of the matter is, anyway, that your AC should still be running in full ac short cycling. It is starting up and shutting down quickly, the short cycling is going to have a number of different bad effects. When advise checking a few items and contact for service if you see this problem with your system, and it can lead to increased cooling costs, aircon compressor short cycling, and full reduced performance standard.

What causes short cycling?

There are a number of serious causes of short cycling, as tend to be the case with most AC system problems. You could just have a system that is too big for your house, which is likely the case if it has forever short cycled. Unfortunately, there is not truly much to do about this instance other than to change the system with a more right one for your home.

Another general source of short-cycling is a malfunctioning thermostat. When thermostat notices false temperatures, it will cut the cooling cycle. An HVAC expert can repair this or put in a new thermostat.

If the filter is too dusty, it can create a lot of airflow struggle in the system. That, in turn, can lead to the system overheating and shutting down in order to save itself from damages. The blocked filter may have caused too much worry on the blower motor and forced the system to turn off and on.

Finally, and more dangerous, you could have a system that is leaking refrigerant. Refrigerant is important to the work of your AC, and this is the fluid that permits for heat transfer to take place. If your system does not have the needed amount of refrigerant due to leaks, ice can develop on the evaporator coil, the unit can overheat, it will create ac cycles on and off every 10 minutes, and eventually could break down fully.

2. Thermostat failure

Most thermostats work incredible for quite a while. They’re a dependable bit of innovation. On the off chance that your thermostat isn’t working, it will most likely be replaced. A typical thermostat issue that normally brings about the temperature never reaching what you have it set for.

Grime can develop inside a thermostat. At the point when this occurs, the thermostat doesn’t effectively measure your home temp. It can be caused if your thermostat isn’t placed correctly. You don’t need your thermostat to be in direct daylight, and it ought to be close to 5 feet from the entryway.

You can utilize this gadget to build up the favored indoor temperature, and the system ought to promptly consent accordingly. On the off chance that the room keeps on feeling the equivalent after some time has gone, there is likely an issue.

For example, it could be in direct daylight because of the thermostat area close to a window or entryway. The introduction to daylight will make the thermostat give a bogus perusing by warming it up. This is additionally obvious if your thermostat is excessively near a warmth wellspring of any sort. Ensure that the thermostat is midway found and away from heat sources and direct daylight. On the off chance that it isn’t, contact an HVAC expert to have it moved.

Related article: Aircon thermostat problem

3. Dirty air filter

Even though obstructed air filters are one of the most widely recognized issues influencing the usefulness of air conditioner systems, the filter is normally the most disregarded thing of the entire system, that needs the most consideration.

Stopped up air filters cause your AC to work at a lower proficiency which implies it doesn’t cool your home in the right way. At the point when the power charge begins to crawl higher, it can at times be hard to decide the reason.

It could be a flawed apparatus or an ineffectively working AC system. In Florida, we expect higher electric bills throughout the late spring months since we depend so intensely broadcasting in real-time molding when the warmth strikes.

At the point when your HVAC system filter is stopped up or dirty, this may make your air conditioner overheat. Your air conditioner should cycle on and off at times for the day. At the point when the filter is obstructed, your AC needs to stir more earnestly to keep up. This squeezes the unit and can make it become overheated and can lead it to kill your ac on and again and again.

Related article: How to clean aircon filter

4. Compressor issue

On standard private air molding systems, the compressor is normally situated in the outside unit. As its name infers, the compressor’s principle work is pressure. In an air conditioner, it works by packing cool, low-pressure, vaporous refrigerant until it is more sizzling and has achieved a lot higher weight. From that point, the vaporous refrigerant is pressed into the condenser.

Once in a while, the refrigerant lines of your system get cracked or create openings. The refrigerant moving through these lines begins leaking, and your system’s refrigerant charge diminishes. On the off chance that a not exactly qualified individual deals with your air conditioner and accidentally includes an excessive amount of refrigerant or even an inappropriate sort of refrigerant, it tends to be a dangerous slip-up for the compressor.

If your unit’s effectiveness to cool your home drops and you notice that it isn’t cooling the house according to your necessities, at that point, this implies there is refrigerant spillage. Different pieces of your air molding system accumulate soil, residue, and other such trash while working.

Your condenser curl is one of those parts. This accumulation of soil frustrates the ejection of hot air from the curl and powers your system to work more diligently to reach your characterized temperature. The measure of warmth caught in the system and the weight brought about by it on the system to buckle down overheat the compressor. Furthermore, these issues can make your air conditioner turning on and off repeatedly.

Related article: How to test aircon compressor

5. Condenser issue

The refrigerant or coolant is answerable for eliminating and engrossing warmth inside a room and radiating this warmth into the outside air. It does as such with the assistance of the condenser.

Air molding units are mind-boggling systems that incorporate an evaporator, compressor, and condenser notwithstanding fans, channels, and registers. Most systems comprise of two separate units, one situated inside your home, and the other situated outside. Oppositely, packaged systems remember everything for one unit.

Condenser failure can be brought about by spills inside seals and broken cylinders. The cylinders can get squeezed or may experience the ill effects of wear and break particularly after broad utilization. Tap an expert contractor to determine spill issues. After some time, your AC unit can get impeded by flotsam and jetsam and other undesirable particles, which can prompt condenser failure.

While a portion of these particles could be outside, it’s customarily because of metal particles that penetrated the condenser itself. Legitimate upkeep can assist mortgage holders with forestalling this issue. Your unit’s condenser coils, part of the open-air unit, dispose of the warmth eliminated from the air by ousting it outside the structure. It won’t work as it should. And it’s a very common issue. At the point when it occurs, heat move is hindered, and your unit needs to work more enthusiastically to carry out its responsibility, prompting expanded wear on the parts and even system failure.

Related article: Dirty condenser coil

6. Freon leaking

Refrigerant assumes a critical function in the cooling cycle. It’s the refrigerant’s business to retain the warmth from your home and delivery it outside. If the level of the refrigerant is down, it will take more time to cool your home or business.

One of the most widely recognized issues your air molding system can encounter is a freon leaking. What is aircon freon? Freon, all the more normally known as refrigerant, attempts to cool your home by eliminating warm air from inside your air molding system and moving it outside. Be that as it may, for different reasons, freon can start to spill. Freon is a wellbeing peril.

Freon is a deadly damage substance, and thus, freon breaks ought to be dealt with by a specialist air molding repair professional. Breathing in freon is profoundly noxious and could bring about death. Likewise, freon spills exhaust the ozone layer and are risky for the earth.

Not exclusively can a freon spill cause execution and effectiveness issues, however, it can prompt genuine medical problems for anybody uncovered. The refrigerant is a kind of coolant that assumes an essential part of its capacity to cool your home or office.

All air molding units contain refrigerant inside their copper coils, which is the way it can chill your home off to the temperature you set it to from the thermostat. Much the same as an inflatable bed or youngster pool, the gap regularly begins as a pinhole release and turns into a significantly more serious issue if not halted.

Related article: How to check freon level

7. Evaporator coil freeze

Your air conditioner works by circling refrigerant through two arrangements of coils or copper pipes. The refrigerant beginnings as a fluid and is changed over into a vaporous structure in the evaporator and evaporator coils. As it changes state, it assimilates heat. The vaporous refrigerant goes to the condenser coils where it changes back to a fluid again and deliveries the warmth it contains. This cycle is the way cool air is created in both focal air molding units and warm siphons.

Frozen coils are a major problem if not taken care of sooner. If you don’t recognize these problems sooner, it can turn out to be something dangerous. Interestingly, you might have the option to fix the issue yourself before any costly repairs become essential.

If the main part gets frozen, it will put additional strain on your system to work efficiently. The coils should be cleaned intermittently for appropriate warmth ingestion to happen; something else, the coils may simply freeze over.

The presence of ice on the coil will in general trigger the development of still more ice until the whole coil may get encased in a square of ice. Damage may happen as the blower fan strains to get air through the ice-hindered coil, regularly overheating, or the compressor is hazardously overemphasized as the A/C runs persistently, failing to cycle off.

Related article: How to make aircon colder

8. Large sized AC

Since a curiously large AC is excessively incredible for your home, it will rapidly chill your home at that point shut, which can raise your vitality bills and destroy your AC. In any case, to dehumidify your home’s air, your AC needs to run ordinary length cycles. like we clarified in the main issue, a larger than usual AC will cycle on and off now and again.

What’s more, if an AC is continually stopping, it won’t run long enough to eliminate dampness from your home’s warm air. Your AC has a few engines that run suddenly. And these engines attract more force when they fire up contrasted with when they’re running. So if your AC is turning here and there oftentimes, the engines in your AC are utilizing more force than they should, which is raising your vitality bills.

If mugginess is now an issue where you live, the exact opposite thing you need is for your air conditioner to produce much more. Because of this expanded degree of dampness created by a larger than average air conditioner, the air quality in your home can fall apart.

This is an issue for anybody with asthma or some other respiratory ailment. At the point when you have the correct size air conditioner in your home, the system runs sufficiently long to eliminate the greater part of the abundance mugginess from the air. Notwithstanding, when you have a larger than usual air conditioner, the system will just run for a couple of moments one after another.

Related article: BTU calculation formula for air conditioner

9. Capacitor issue         

If ac keeps turning off, it might show something isn’t right with your capacitor. The fundamental parts of your air molding system (and most electro-mechanical machines) are the capacitors. Attached to engines, capacitors play out the activity of balancing out voltage and giving the essential shock to turn over the engine in any case.

The capacitors are associated with the three primary engines: the compressor engine, the blower engine, and the open-air fan engine. The AC may likewise require a long time to begin after being turned on and the compressor will make a murmuring commotion. The capacitor may likewise make a discernible clicking commotion.

Rising vitality bills are another sign since the AC system should utilize more vitality to work as the capacitor fizzles. In the long run, the air conditioner won’t remain on or will not work as it should. The most widely recognized issue that terrible capacitors can cause is a “hard beginning.” This is the point at which the compressor of an AC experiences issues firing up, falters attempting to kill on, and afterward close off a short while later.

There are a few distinct reasons for hard beginning (the most exceedingly terrible of which is a compressor approaching an amazing finish), yet an awful beginning capacitor is one of the most well-known. It isn’t in every case simple to analyze that a beginning capacitor is an issue. A specialist will inspect the capacitor to check whether there is obvious damage to it (parting, protruding, leaking oil) and run electrical tests to make certain.

Related article: How do you repair aircon capacitor

10. Loose wiring/cable

A considerable number of electrical issues around the house are traced to various forms of a similar basic issue: wire associations that are made inappropriately or that have loosened after some time. Short circuits can cause even fires if not looked after sooner. Frequently, a wiring issue can be at the part level because of an off base kind of circuit, terrible capacitor, or a broken thermostat.

The new units regularly have an inherent electrical switch in the graceful line, so verify whether that has stumbled. If the graceful string has all the earmarks of being whole you can eliminate the bureau and with a multi-meter, check the terminal strip where the string attaches, to confirm that you have appropriate voltage. You ought to never endeavor to repair or alter the flexible string however replace any that you find imperfect.

If running your AC trips the electrical switch, it is normally because of broken wiring, however, hindered airways may cause stumbling. In some cases, the fan in the outside unit may quit running when it reaches the greatest speed. In outrageous cases, your AC may not begin by any stretch of the imagination. Various electrical wires flexibly flow to various parts of the hardware.

After some time, wires may get ousted and lose contact with the segment or the force source. This disturbs the current stream to the influenced segment and causes breaking down.

11. Timer issue

Essentially, your thermostat may have timer settings – regardless of whether you’ve never utilized them. Check your manual or the menus on the thermostat to check whether you can change the timer. It might sound self-evident, yet check whether anybody in your home or office has set the aircon to turn on without anyone else at a specific time, or undoubtedly off.

The case might be that the timer is on the wrong setting. More current models, particularly those with an Energy Star rating, have vitality sparing highlights that may automatically kill the aircon system at specific occasions. You need to act quickly if the timer is damaged. And the AC will turn on and off automatically if that happens.

12. Wrong thermostat location

Short-cycling happens when your HVAC system stops too soon and neglects to finish a full warming or cooling cycle. These outcomes in inadequate warming and cooling and implies that your indoor condition won’t be agreeable. While most fresher thermostats utilize some type of an electrical temperature sensor, more seasoned thermostats utilized mechanical switches, regularly a bimetallic strip with mercury or an attractive switch.

With a mercury switch, as the temperature in the room changes, the coil grows or contracts, inclining a glass bulb with mercury inside. Contingent upon where the mercury is inside the cylinder, it will either close or open the circuit by interfacing the positive and negative leads in a single finish of the cylinder.

The best place for your thermostat is on an inside divider, away from all the territories we recently talked about (direct daylight, air vents, your kitchen, passages, windows, and entryways). Preferably, it ought to be placed toward the focal point of your home. You ought to likewise mull over which rooms you and your relatives utilize most of the time.

If your thermostat is in direct daylight, you risk getting bogus readings. The thermostat records the temperature of your home (explicitly the room where it is placed) and utilizes that data to judge whether the warming and cooling system needs to kick on.

On the off chance that the thermostat is situated close to a bay window and warmed by direct daylight, it “thinks” the room is hotter than it actually feels, making your air conditioner kick on when it isn’t required. Your thermostat should have the option to accurately speak to the temperature feel in your home. At the point when the thermostat placement is above or close to an air vent, the temperature readings get slanted because the thermostat is the primary thing to get hit with approaching air.

13. Airflow restriction

Your air conditioner might be completely acceptable at cooling the air, yet that doesn’t mean a lot if it can’t course the air through your home. In unified systems, cool air is conveyed through your ventilation work using a fan to all the sides of your home. In any case, when the airflow is confined, that can’t occur. Your air conditioner hence needs to burn through superfluous effort to appropriately cool your home, and mileage on singular systems builds: raising the odds of a significant breakdown just as expanding your month to month bills.

The thickness of the furnace filter ought to be considered when the ventilation work is planned and the fan speed is set. If the thickness is expanded because the filter is dirty, it changes the weight of the moving air, limiting it and causing lopsided or lacking air appropriation. Air travels through the ventilation work and to its proposed location by keeping up the right static weight. On the off chance that the ventilation work is too large, the weight of the air will drop, never reaching its planned objective.

All the more regularly, however, the ventilation work is excessively little. This will make restriction the point that the deliberate measure of airflow isn’t reaching its expected objective.

A common constrained air HVAC system is intended for a shut circle system. Ideally, it creates a specific measure of air, and that air is conveyed all through the home so a similar measure of air is gotten back from the home, adapted, and afterward redistributed. If the ventilation work is introduced in a way that limits the airflow, at that point the region may never get the air it was intended to get.

The more extended the air needs to travel and the more turns and curves it needs to go through, the more choppiness is made and the more outlandish it is to make it where it is expected to go. Toss in a squashed or mostly squashed run, bowed, or a crimped bit of flex, and you’re not liable to get the air you should.

Related article: Aircon placement guidelines


During the hot months in Singapore, you need your air conditioner to be up and running, and you want it to be doing so at top performance and best levels. Investing in the best equipment, having the equipment expertly installed, and scheduling routine AC maintenance will support you to enjoy the top performance that your aircon has to offer. No air conditioner is perfect, though.

Anyway, your AC system should for cycle for fifteen minutes or more. When you view cooling cycling little than this, something may be wrong. The aircon compressor should not turn for less than ten minutes and then turn back on a little time later and repeat the process. This is a short-cycling, and you would not want it affecting your chilling system.

These are just a few reasons why an air molding unit may automatically turn itself on and off. The most widely recognized reasons for this issue will in general be the development of soil on the compressor or condenser, flaws with the thermostat or timer, or issues with the circuit load up. In any case, an aircon unit turning itself on and off can be extremely bothering for mortgage holders and workers, and now and again just an expert can help. So, if you notice these kinds of problems, don’t delay getting professional help.

I also strongly recommend you read our latest guide, how long should ac stay off between cycles to understand how often should an AC cycle.

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