aircon troubleshooting

How to Troubleshoot Common Aircon Problems

Air conditioners keep us cool, but sometimes they have problems. Problems like when an aircon does not start doesn’t make the room cold enough, drips water, makes weird sounds, turns off and on too much or its outside fan stops working.

If your aircon has these issues, don’t worry! There are ways to fix them by checking simple things such as the plug and fuse or cleaning parts like filters and coils.

Sometimes people do not put in their aircon right or take good care of them. This can cause trouble. When an aircon leaks water it might mean that the part which gets rid of water is blocked.

Weird noises often come from dirty parts inside the machine. Giving your air conditioner a chemical wash can help it work better and last for 15 years—that’s longer than what most brands say!

It is also smart to fill up your aircon with gas so it can perform at its best. However, fixing important pieces inside can cost a lot of money; this is why having experts check on your machine now and then is a good idea.

It could save you money because fixing small problems early costs less than big ones later.

Read on for some great tips on how to spot common issues with your cooling buddy and learn easy ways to solve them before calling in the pros!

Identifying Common Aircon Issues

When your sanctuary from heat starts betraying you with issues, it’s key to pinpoint the culprit swiftly. From an aircon that stubbornly refuses to come alive to one that operates with more stops than a city bus, understanding these common gremlins is the first step towards reclaiming your cool oasis.

Failure to turn on

Your air conditioner might not start for a few reasons. First, check if it’s plugged in properly. Sometimes the plug can come loose from the outlet. Next, look at your circuit breaker or fuse box; maybe a switch flipped or a fuse blew.

If these are okay, the issue could be with your aircon’s inner workings like bad wiring, or a faulty compressor or motor.

For these more complex problems, you may need to speak with an expert. Fixing internal parts like the PCB (printed circuit board), condenser unit or evaporator coils is often costly and requires professional skills.

Always ensure that power issues and failing components are handled safely to keep your air conditioning unit running smoothly.

Inadequate cooling

If your air conditioner isn’t making the room cool, there might be a few reasons why. One common issue is dirty filters. These block the airflow and stop the system from working well.

You can fix this by cleaning or changing the filter. Check for dirt on the evaporator coils too; these need to be clean to absorb heat properly.

Another thing to look at is the thermostat. Make sure it’s set right and working as it should. If not, it might not tell your AC to cool down the room enough. Also, check if there’s enough gas in the compressor because, without it, your system can’t make the air cold enough.

Take care of these things and you’ll likely feel cooler soon!

Water leaks

Water leaks in your air conditioner might mean the drainage system is blocked or not put in right. If water drips from your unit, first look at the drainage channel for blockages. Clear any dirt or debris you find to let water flow away properly.

Sometimes ice inside the AC can melt and cause a leak if the room’s very hot, so clean those filters!

Still, got leaks? This could be a sign of bigger trouble that needs an expert’s help. Leaky air wastes energy and can harm your home, so it’s important to fix them fast. Acting quickly on these signs helps keep your air conditioning system running well and stops minor issues from turning into big problems that cost a lot to repair.

Unusual noises

Air conditioners should run smoothly and quietly. If you hear strange sounds, your aircon might have a problem. Loud noises can come from dirty evaporator coils or loose parts inside the unit.

Grinding, squealing, or rattling suggests something’s wrong with the motor or other internal components.

Check your air conditioner if it starts making noise. Turn it off first for safety. Look for any signs that parts are not tight or secure. Clean the coils to see if that stops the noise.

If things still sound bad after checking and cleaning, it may be time to get help from an expert who knows about aircon. They can find what’s causing the trouble and fix your AC so it runs quiet again.

Frequent cycling on and off

Frequent cycling can mean your aircon works too hard. It turns on and off more than it should. This often happens when dust blocks the way air moves in the system. The block stops cool air from flowing out smoothly.

You’ll need to clean out this dirt or any other things that are in the way.

To fix this, first, check if your air filters are dirty. A clean filter lets air pass freely and stops short cycling. Dirt makes it tough for the aircon to breathe, causing it to switch off quickly after starting up.

If cleaning doesn’t help, look at your thermostat sensor position and wiring issues that might confuse the system into thinking it needs to turn on and off all the time.

External fan malfunctions

The external fan on your aircon has a big job. It moves heat from inside your home to the outside. If this fan stops working right, heat transfer is slowed or stopped. This can make the air conditioner overheat or harm the compressor, leading to more trouble like a refrigerant leak or total system failure.

Fixing an outside fan can be costly. But, good care can prevent problems and save money in the long run. Make sure you clean around the unit and keep plants and debris away from it for proper airflow.

You may need help from professionals like Billy’s Aircon Servicing Singapore if things get too tricky. They know how to handle condenser problems and ensure everything works well again.

Troubleshooting Tips for Each Problem

Unpacking the quirks of your air conditioning unit, you will discover straightforward solutions to restore harmony and coolness. Dive into a world where each turn of the screwdriver or tweak of the settings brings you closer to that sigh of relief moment when fresh, chilled air flows once again.

Addressing Air Conditioner Problems

Fixing aircon issues can be simpler than you think. If your AC won’t start, check the thermostat and make sure it’s set right. A blown fuse or tripped circuit could also be the culprit, so look at your electrical panel.

When cooling is weak, cleaning or replacing dirty air filters often does the trick to boost airflow and improve indoor air quality.

Hearing strange noises? They might mean something inside is blocking the normal work of parts or there’s loose ductwork. Stop leaks by clearing out drain lines with a vacuum cleaner; this prevents water from spilling out.

For frequent on-off cycles and fan troubles, clean the condenser coil outside. Keeping an eye on refrigerant levels helps too as they are key for cold air.

It pays off to handle these problems fast! Tackling them early can save cash because you avoid bigger repairs later on. Remember to always switch off power before poking around your HVAC unit for safety reasons.

The Role of Aircon Chemical Wash in Resolving Issues

Aircon chemical wash plays a big part in fixing cooling systems. This deep clean gets rid of dirt and grime that block airflow and harm parts inside your AC. It helps coils do their job better, which can make the room cooler.

A clean machine also stops water from leaking and cuts down on strange noises.

Regular chemical washes keep electrical connections strong and help everything run smoothly. They stop small problems from becoming big ones that are expensive to fix. Aircons can last up to 15 years, but only if they get this kind of care.

An expert should do this wash to make sure it’s done right and your AC works well for a long time.

Importance of Regular Gas Top-Up for Optimal Performance

Regular gas top-ups keep your aircon running smoothly and efficiently. They are a key part of making sure your air conditioner doesn’t develop common problems.

– A proper gas level in your AC helps make cool air come out steadily.

– Without enough gas, your AC has to work harder, which can lead to breakdowns.

– Refilling the gas in your AC can also help prevent leaks from happening.

– Regular checks of the gas ensure that all parts of the system are working well together.

– Keeping up with gas levels means less money spent on power bills because the AC uses energy better.

– A well-maintained system with regular gas top-ups will last longer so you won’t have to replace it as soon.

Remembering these simple steps could mean a cooler home and fewer calls for repairs.

When to Call a Professional

Having an air conditioner that works well is important. If you face big issues, it’s best to ask for help from an expert. Here are times when you should call a professional:

– Your AC won’t turn on: It could be the thermostats, the electrical components, or other parts. A skilled person can find the problem and fix it.

– The cooling is poor: This might happen if your system has not been set up right or needs more gas to work properly. Professionals handle these jobs safely.

– Water leaks inside your house: Leaks can damage your home and may come from a broken part in the air conditioning system.

– You hear strange noises: Sounds like banging or whistling often means something’s wrong inside your AC.

– It turns on and off too much: This frequent cycling might hurt the aircon and need someone who knows how to adjust it correctly.

– The fan outside isn’t working: Fixing this helps prevent further harm to other parts of your central air conditioner.

Experts know how to do a chemical wash which makes sure every part of your AC gets cleaned well. They also understand the right way to top up gas for energy saving and good performance.

Billy’s Aircon Servicing Singapore provides these types of expert services for repairing room air conditioners as well as central air conditioning systems.


Keeping your aircon running smoothly is key. Check if it’s plugged in and the parts work right when it won’t start. Cleaning coils and filters help when it isn’t cooling well. A pro can fix a fan that doesn’t spin outside.

Remember, fixing small issues quickly keeps bigger problems away!


1. What should I do if my aircon is not turning on?

First, make sure it’s plugged in. If it still doesn’t work, check your home’s fuse box for a tripped breaker. You may need to call for an aircon repair service if the problem remains.

2. Can faulty installation cause problems with my AC?

Yes, a bad setup of your AC can lead to issues like leaks or poor cooling. It’s good to get a skilled person to install central air conditioning systems and check the air ducts are correct.

3. Why is regular maintenance important for my AC unit?

Keeping your AC well-maintained stops big troubles before they start. Clean filters and checked parts mean no surprises in the hot months when you need cool air the most!

4. My room isn’t getting as cool as other rooms; what could be wrong?

If one room is warm while others are cold, there might be an issue with the air ducts leading to that room—either they’re blocked or leaking cool air somewhere else.