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DIY Guide: How to Fix a Broken Air Conditioner – Troubleshooting Tips and Tricks

The last thing you want in the middle of a heat wave is for your air conditioner to fail now that summer has arrived. But if it happens, don’t worry; you can try a few things before contacting a specialist. Here is a quick guide on how to fix a broken air conditioner.

  • Examine the thermostat. Verify that it is set at the appropriate temperature and mode (heat/cool), and that the battery is not dead. Make sure your smart device is online if your thermostat is controlled by one.
  • Look for error codes. A fault code can be shown on the controller or, in the case of hi-wall units, by flashing lights on the indoor unit if the device has stopped functioning. Before performing any power resets, record the error code to help with troubleshooting.
  • Inspect the air filter. Your air conditioner may have to work harder than necessary if an air filter is unclean since it can limit airflow. As a result, the unit can use more energy and last less time overall. Every three months, it’s a good idea to check the air filter. If necessary, clean or replace the filter.
  • Check the outside unit. Look for any obstructions to the airflow, such as leaves or dirt. Remove any obstructions and cut any plants or trees close by. The compressor may malfunction if the outside unit is dusty or blocked, which will lead to overheating. If your air conditioner is placed next to a fence or other obstruction, this could result in air recirculating, which would lower performance. This issue can be solved with an air deflector.
  • Investigate the circuit breaker. Check to see if the breaker has tripped. In that case, try resetting it to see whether the air conditioner turns on. A power surge or an overloaded circuit may be to blame for a tripped breaker. Call a professional if the breaker keeps tripping because it can be an indication of a more serious issue.
  • Switch off the power. After you have made sure everything is in order, a power reset can help fix any intermittent problems. First, turn the circuit breaker off, a fter five minutes, turn the circuit breaker back on. While it won’t resolve any serious problems, it can correct errors brought on by temporary problems like overheating or power outages.

It is preferable to contact a professional air conditioning repair company if none of these solutions work to resolve the issue. A professional can identify the problem quickly and safely, and then fix it. They will be equipped with the skills and knowledge needed to identify any issues, address them, and look out for any possible risks to safety. Try to stay cool in the meantime by using fans or spending time in air-conditioned areas such as shopping centres or public libraries.

To prevent further malfunctions, keep your air conditioning system in good working order with regular maintenance. The longevity and efficiency of the device can both be improved with routine maintenance. In the long run, this can help you save money on expensive repairs and running costs.

In a Nutshell

  • Check the thermostat and make sure it’s set correctly and the battery isn’t dead
  • Check the air filter and make sure it’s not clogged or dirty
  • Check the outside unit and make sure there’s no blockage of airflow
  • Check the breaker and make sure it hasn’t tripped
  • Check fro fault codes and record them to assist with diagnostics
  • Reset the power to the unit, if  the unit still doesn’twork, call a professional to handle it

Need Help?

T&K Airpower has been working to keep homes and businesses comfortable and efficient for over 25 years. Is your air conditioner not working correctly? Can’y get your AC to turn on? Give us a call, and we will be more than happy to help.

H L-B
H L-B
September 28, 2023
Mitch, the technician that came out to inspect our unit was excellent. He arrived promptly and conducted a thorough service. The unit on the property was about 15 years old but he found major faults that required it to be immediately shut down at the mains. Drainage tubes propped up on cardboard boxes, sagging in the middle. The fan axle wrapped in electrical wires, and rubber mounts that had delaminated due to friction and heat. He provided photos of everything, and a quotations for repair and replacement. Frankly, Mitch might have stopped the house burning down, and for that, he and T&K get a five star review.
samantha watson
samantha watson
September 14, 2023
The T&K crew are amazing. Special shout out to Nicole for being so friendly helpful, understanding, and a straight up communication Queen. Steve is professional and helpful. We had a few tradies through, because the job wasn't straight forward, they were all friendly, helpful, super polite, and didn't leave rubbish everywhere. 10/10 would recommend.
Evan Hunt
Evan Hunt
September 13, 2023
We have been using TK Airpower now for a number of years to service or repair our reverse cycle aircon. Living out of town you rely on punctuality and professional work. On every occasion our expectations have been more than met. The company offers an annual maintenance service and performance check which in our case has been done by Nathan who has advised of any problems and carried out any necessary repairs in an efficient and cordial manner. We find the service charge when compared to other electrical service companies highly favourable and payable by card on the day. Our trust in the company has been extended to having no hesitation in leaving the service team alone to finish the job when we had to attend to an unscheduled appointment.
Scott “ScottG” Gully
Scott “ScottG” Gully
September 12, 2023
Absolutely fantastic service. I was referred to this business by Mitsubishi as they are an authorised dealer for the brand as I had issues with my WiFi connection. Steve was so accommodating. To the point of after I had contacted them for help he followed up with a phone call and an email with information on how to go about reconnecting the WiFi side of my system. This level of service in this day and age is very rare . I highly recommend this company and will continue to use it in the future for all of my aircon needs. Regards Scott G
Mark Halliday
Mark Halliday
June 14, 2023
Excellent company. Prompt, friendly service.
mike yardley
mike yardley
May 19, 2023
This is the second time we have used TK Air power We find they are professional trustworthy informative and reliable with friendly techs Adam did our job this time and it was a pleasure to have him in our home Thanks Adam and thanks TK Air power Mike Yardley Greenwith
Adam Beecken
Adam Beecken
May 18, 2023
We recently spoke with T&K AirPower about supply and fitting of a new ducted reverse cycle air conditioner for our home, we’ve always had evaporative ducted air-conditioning but never refrigerated. They gave us a few options but we went for the Mitsubishi Electric knowing they’re one of the best on the market, they also advised us adding the Air Touch 5 controller so we can control via an app and also turn on our system prior to getting home. Installation went smoothly, the guys were on time, friendly and communicated well, they showed us how to use the system and cleaned up before leaving. We will definitely tell our friends and refer T&K AirPower to others, Thx Adam and Cindy
Steve Brown
Steve Brown
May 17, 2023
Excellent customer service. Dealt professionally with my insurance company. I would highly recommend. Nicole was a pleasure to deal with!
Grant Cooper
Grant Cooper
April 28, 2023
Very prompt service. Cost less than was quoted originally because the job turned out to be not so difficult.