What do I do if my aircon stops working suddenly?

Author: Brindha SEO

Aircon Repair

In Singapore’s hot and humid climate, a well-functioning air conditioner is more of a necessity than a luxury. When your aircon suddenly stops working, it can be frustrating and uncomfortable, especially during peak hours of the day or in the middle of the night. Whether it’s at home or in the office, a sudden aircon breakdown requires quick attention. Fortunately, there are steps you can take to troubleshoot the issue — and if needed, the professionals at LetsCool Aircon and Services are just a call away.

With over 25 years of experience, LetsCool is a trusted name in aircon installation, servicing, and repairs across Singapore. Here's a comprehensive guide on what to do if your aircon stops working suddenly, along with how our team can assist you with expert solutions. View more.

1. Stay Calm and Check the Basics

Before jumping to conclusions, start with the simplest checks:

  • Is the Power Supply Working?

    Ensure the aircon is plugged in properly and the power socket is functioning. Try plugging another appliance into the same socket to test.

  • Check the Remote Control

    It might be a simple battery issue. Replace the batteries and try turning the unit on again. Also, ensure the remote is set to the correct mode (e.g., "Cool" instead of "Fan" or "Dry").

  • Reset the Circuit Breaker

    Sometimes, a tripped circuit breaker can cut power to your aircon unit. Locate your circuit breaker panel and reset the switch for your aircon.

2. Inspect for Common Warning Signs

If the aircon still doesn’t work, look for any of these warning signs:

  • Blinking Lights

    Many modern aircon units show error codes through blinking LED lights. For example, Daikin, Mitsubishi, and Panasonic units display different blinking patterns when there's a problem.

  • Unusual Noises or Smells

    A burnt smell or rattling noise could indicate a more serious electrical or mechanical fault. In this case, switch off the unit immediately and avoid using it until it is checked by a technician.

  • No Airflow or Warm Air

    If your unit is running but not blowing cold air, it could be due to a dirty filter, refrigerant leak, or compressor issue.

3. Check and Clean the Air Filters

Dirty filters can restrict airflow and cause your aircon to malfunction or shut down completely. Try removing and cleaning the air filters:

  • Turn off the power.

  • Remove the front cover and gently take out the filters.

  • Wash them with mild soap and water.

  • Let them dry completely before reinstalling.

Pro tip: LetsCool recommends cleaning your air filters once every two weeks for optimal performance, especially in homes with pets or heavy usage.

4. Let the System Rest and Restart

Sometimes, simply letting the aircon rest for a few minutes can help. Turn off the unit, unplug it from the power source, wait for 10–15 minutes, and then restart it. This can sometimes reset the internal electronics and resolve minor glitches.

5. Don’t Attempt Complex Repairs on Your Own

If you've checked all the above and your aircon still won’t turn on or function properly, it’s time to call in the experts. Trying to fix internal components like the compressor, circuit board, or gas top-up by yourself can be dangerous and may void your warranty.

6. Contact a Trusted Aircon Technician in Singapore

This is where LetsCool Aircon and Services comes in. Our team of trained technicians can quickly diagnose and repair all kinds of aircon problems. Whether it’s a blown fuse, sensor failure, refrigerant leak, or compressor issue — we’ve got it covered.

We support all major aircon brands, including:

  • Mitsubishi Electric and Mitsubishi Heavy Industries

  • Daikin

  • Panasonic

  • Midea

  • Hitachi

  • York

  • Sharp

With 25+ years of experience and islandwide service, we guarantee professional support, affordable pricing, and fast response times.

7. Emergency Services Available

Aircon emergencies don’t wait for office hours — and neither do we. LetsCool offers prompt, reliable emergency services for sudden breakdowns. Just give us a call at +65 9862 3678, and we’ll send a technician to your location.

8. Prevent Future Breakdowns with Regular Maintenance

Prevention is always better than cure. Regular maintenance ensures your unit runs efficiently and helps identify minor issues before they turn into major faults.

LetsCool Aircon and Services offers:

  • One-time servicing

  • Annual Contractual maintenance packages (monthly, quarterly, yearly)

  • Chemical wash and overhaul services

  • Full-system overhauls

Our services come with a 90-day workmanship warranty, giving you peace of mind and reliable cooling.

Conclusion

A sudden aircon breakdown can disrupt your comfort and routine, but knowing what to do makes all the difference. Start with basic checks, inspect for warning signs, and if the problem persists, rely on trusted professionals like LetsCool Aircon and Services.

With prompt service, skilled technicians, and a reputation for excellence, LetsCool is your go-to aircon expert in Singapore. Whether you need a quick fix, detailed servicing, or a brand-new installation, we’re here to help.

Need help fast? Contact us today at +65 9862 3678 for a free consultation or emergency support.

11 Mandai Estate,

#05-15 Eldix,

Singapore 729908

Mail id: info@letscoolaircon.com.sg

Call: +65 9862 3678 (or) WhatsApp us: https://wa.me/6598623678

#AirconRepair #AirconrepairServices #SingaporeAirconRepair #acrepair #airconrepairservicesingapore #acrepairservicesingapore #airconrepairservicing #airconrepairservice #airconservicenearme #airconservicingnearme