Air Con Not Working? How to Reset Your Air Conditioner

It’s the age-old question to ask when technology isn’t working – “have you turned it off and on again?”

Simply restarting a device can do wonders when it’s not working right. This rings true, even for an air conditioning system.

Is your air conditioning unit producing warm air when you want cool air? Is your indoor unit slow to start or refusing to start at all? From portable air conditioners to ducted system or window air conditioner, all heating and cooling systems can have their problems.

But how do you reset an air conditioner? We’re running you through exactly how you can reset your air conditioner isolator switch so you can get back to the comfort you deserve.

When Should I Reset My Air Conditioning?

There are a few instances where you will want to try and reset your air conditioner. The first is when your air conditioning unit isn’t heating or cooling effectively out of nowhere.

This could be due to any number of reasons that require professional help. It could also be a thermostat error that is easily resolved with a reset.

If your air con won’t turn on, a reset is often the quick fix you need. Similarly, if your AC stopped working after a power outage, a hard reset might just do the trick. If your air con switches off by itself, resetting it could be the solution.

How to Reset Air Con with the Isolator Switch

Resetting air conditioning units by the isolator switch is simple when you know how to do it. Here are seven steps to reset your air conditioner:

1. Turn off your air conditioner unit with the remote/central controller.
2. Locate the outdoor unit.
3. Locate the isolator switch – a large plastic V-shaped switch, typically located on the wall next to the outdoor unit (see above picture).
4. Turn the isolator switch off.
5. Leave the unit for one hour.
6. Turn the isolator switch on.
7. Check for any errors with the unit.

Resetting your AC in this way can often resolve minor mechanical problems. If the problem persists after hitting the AC reset button, it’s time to call a professional.

This applies even if you’ve got a portable air conditioner. Window air conditioners and reverse cycle air conditioners also require this kind of reset.

The Benefits of Resetting Your AC Unit

Resetting your air conditioner may not be something you think about often, but it can offer several significant benefits for your comfort and your wallet.

Here are some reasons why you should consider resetting your AC unit:

1. Improved energy efficiency: Over time, your air conditioner’s settings may become less energy efficient due to dust buildup or wear and tear. Resetting it can help recalibrate its performance, making it run more efficiently. This means lower energy bills and reduced environmental impact.
2. Enhanced cooling performance: If you’ve noticed your AC isn’t cooling your home as effectively as before, a reset can help restore its cooling power. It clears out any temporary glitches and allows it to function optimally, providing cold air when you need it most.
3. Extended lifespan: Regularly resetting your air conditioner can prevent it from overworking or overheating, which can lead to costly repairs or a shorter lifespan. It’s a simple step that can help your AC last longer.
4. Improved air quality: A reset can also help refresh the air filters and remove any accumulated dust and allergens. This can lead to better indoor air quality and reduce allergy symptoms.
5. Customised comfort: Resetting your air conditioner gives you a clean slate to adjust the settings according to your comfort preferences. It’s a chance to fine-tune the temperature and fan speed to match your needs.

Resetting your air conditioner is a quick and easy way to enjoy a more efficient, cost-effective, and comfortable cooling experience. Make it a part of your regular maintenance routine to reap these benefits and keep your air conditioning unit running smoothly.

You’ll appreciate it when the hot weather hits or the chill of winter sets in.

When to Call a Professional

If you’re still experiencing problems, even after a reset, you need to call a licensed heating, ventilation and air conditioning (HVAC) professional to solve this problem. Some of the most common problems we have come across that a reset won’t fix include:

• Compressor failure
• Fan motor problems
• Faulty wiring
• Faulty outdoor condenser unit
• Clogged air filters
• Blown fuse or another electrical issue

Above all else, if you’re unsure of how to reset your air con at any point, do not continue. One wrong step could make problems worse or even void the warranty on your air conditioning unit.

Or your AC unit may be in trouble and in need of more than a reset. You might even need a new air conditioner.

When you need to get a professional, Metropolitan Air Conditioning has fully licensed and highly experienced HVAC technicians who are available 24/7 to help.

Contact us now and we can have a heating and cooling expert at your door within one hour*.

Please note: This information is provided for advice purposes only. Regulations differ from state to state, so please consult your local authorities or an industry professional before proceeding with any work. See our Terms & Conditions here.