How to Repair a Circuit Board for Your Air Conditioner

If you have an air conditioner, then at some point you're going to need to repair the circuit board. It's a relatively easy process, and this blog post will show you how to do it. So if your air conditioner is giving you problems, don't despair—just follow these simple instructions!

Have you ever been sitting comfortably next to your air conditioner, only to have it go out on you? Does the AC just flick on and off, or does it blow hot air despite being set to a cool temperature? These problems are often the result of a blown circuit board. Circuit boards contain vital boards that control certain areas of your AC unit. In order to fix these problems, you will first need to diagnose the problem with the AC unit's circuit board.

Is Your Air Conditioner Blowing Warm Air Despite Being Set To Cool Temperature?

First check the circuit board again. Here are some signs that your circuit board is not working correctly: The power light is turned on but isn't blowing any air; if you are using a remote to turn on the air conditioner, is it turning off by itself or not working properly? Circuit boards can become faulty without any signs of problems beforehand. Circuit boards sometimes just need to be reset, so hold your circuit board reset button down for five seconds before trying it again.

If that does not work, there might be another problem with the wires in the temperature compartment. First unplug your unit and check all of the wiring leading up to where the temperature is set. Look for any frayed wires or burnt areas on any of them. This would indicate overheating in these parts, which would cause either the motor underneath or the actual heating element inside to stop completely. If this is true then the wires need to be replaced.

If the wiring appears intact, then look for anything that seems loose or disconnected inside of the temperature compartment. This could include any screws that are not holding parts down tightly or are just too loose in general, electrical connectors that have become disconnected, and small circuit boards with crevices where dust might have collected. Clean out all of these areas with a can of compressed air before plugging your unit back in. Then check to make sure everything is put together tightly and properly reconnected before turning on your AC again.

Circuit boards sometimes simply get stuck, so let's say you've done all this and it still blows warm air despite being set to cool temperature- resetting the circuit board and cleaning out all of the wires just wasn't enough. Circuit boards can become stuck due to overheating, so unplug your unit and let it cool down for a few minutes before continuing with these steps.

Once it has cooled down, try turning on your AC again to see if this helps at all. If you are still having problems then move onto the next step.

Check For Physical Damage Around The Circuit Board

When your air conditioner short circuits or overloads from too much work, there is not one but two circuit boards that control the motor speed and the compressor speed separately. Circuit boards can get very hot during use because they work to regulate electrical current which gets converted into heat as it transfers from one wire to another. Circuit boards can overheat if they are overloaded with work, causing internal components to melt and break down the circuit board's connection points.

Circuit boards can also short circuit or overload due to a short in a wire or a loose connection, in which case there will be visible wear and tear on the wires themselves. Circuit boards can even get wet when water is spilled onto them accidentally, which causes serious damage internally that may not be visible from the outside. In all of these cases you need to fix your broken circuit board before it can work again.

Do Not Attempt Repair If Circuit Board Is Wet Or If It Appears Damaged

First check all of your wires for any problems. Circuit boards sometimes short circuit from too much work due to the air blowing when the doors are open, but this is easy to repair by simply turning it off at the breaker box. Circuit boards can also overheat if they go on for too long in a hot room or if a window is left open and a cold breeze comes in. Circuit boards might also need to be reset after going through one of these minor problems, so hold down your circuit board's reset button for five seconds before trying it again.

If you do not see any damage around the temperature compartment, then there might be something wrong with either the motor speed controller or compressor speed controller that will require taking apart your unit just to get at them. Circuit boards should never be repaired when they are wet, because the water will make them impossible to fix and extremely dangerous for you to touch. Circuit boards can also become wet when water is spilled onto them by accident, in which case they need extensive repair that cannot be done by an average person and require professional assistance or a replacement circuit board.

Let's say your circuit board appears undamaged with no signs of wear or overheating, but it still blows warm air despite being set to cool temperature. Plug your unit back in and turn it on again- if nothing changes there might actually be a problem with the programmable thermostat. Circuit boards can get stuck or short circuit due to too much power transfer through them, so unplug your unit and let it cool down for a few minutes before continuing with these steps.

So there is no visible damage and you've reset your circuit board and cleaned around the wires just in case, but none of that has helped. Circuit boards can also become stuck due to overheating, so unplug your unit and let it cool down for a few minutes before continuing with these steps.

Once It Has Cooled Down Turn Back On And Check For Results

When your air conditioner short circuits or overloads from too much work, there is not one but two circuit boards that need to be reset. Circuit boards are not designed to burn out completely, so they will usually correct themselves after a few minutes of cooling down. If that does not work then your problem is more serious than circuit board repair can handle, what you need now is a professional replacement circuit board.

Let's say your circuit boards both reset but the air conditioner still blows warm air despite being set to cool temperature on both speed controllers. Circuit boards can get wet if they are exposed to water by accident, which damages it internally and makes it impossible for an average person to fix without special tools. Circuit boards also short circuit due to too much power transfer through them, so unplug your unit and let it cool down for a few minutes before continuing with these steps.

Conclusion: If you are having problems with your air conditioner, it is best to contact a professional. They will be able to help diagnose the problem and make the necessary repairs. Contact us today for more information on our repair services.

Author Bio:- Robert Wong

Robot is a marketing manager at EZ Eletric. He has an interest in writing articles related to HVAC installation, maintenance, and repairs. The HVAC system has made our life convenient regardless of the climatic changes. Read Robot’s articles to know step-by-step installation guide for ceiling fan, smoke detector, lighting and electrical appliances in California as well as how to repair them in case of malfunctioning or breakdown.