How to repair an air conditioning unit yourself

repair the air conditioning unit

It’s a hot summer’s day, everything is warm, sticky and uncomfortable; you think to yourself that you’ll just turn on the air conditioning; to hell with the electricity bill. You turn it on, and you discover that it’s broken. Great. You’ll just have to fix it or suffer an uncomfortable day under the beating sun.

But you don’t know how to fix it and you google it. Well you’ve stumbled across the right article online as that is what we are talking about today.

Please note that before you attempt to make any air conditioning service you must switch off the supply of electricity given to the air conditioning unit and that there is no more electricity In the circuit via switching off the power supply either to the room in which the air conditioning unit draws power from or the air conditioning unit directly.

After switching off the supply of electricity try to switch on the air conditioning unit to try to remove the stored electricity In any capacitors.   Another safety consideration is that you should wear insulating gloves as any electrical current can be dangerous and potentially fatal by stopping the natural electrical impulses to the heart.

    1. Hope it’s a simple fix

For this repair you’ll need a voltmeter (preferably a multimeter) and some condensed air in a can. In this step you’ll identify things such as a blown fuse in the air conditioning unit or even in the main fuse box. Check for signs of a blown fuse, burnt wires and no current flowing past the fuse (caused by the fact that a fuse is essentially a wire and a blown one is a broken wire hence it can’t conduct electricity) is the main identifying features of a blown fuse.

If it is just the case of a blown fuse, simply switch it out for a new one of the same rating and size and simply replace it as soon as you are sure there isn’t electricity being supplied to the unit or elect icy currently still in the circuits via charged capacitors.

If it isn’t a fuse; however, it could also be simply a clogged filter which is common if your air conditioning unit is blowing cold air with a low breeze on the max setting. Simply remove the filters on the unit (both condensing unit and indoor unit) and remove any dust and debris. This should allow for the air to pass through the filters more easily and give the aircon a new stronger breeze.

    2. Refrigerant refill?

This is also another common problem and part of the basic service schedule of the air conditioning unit. To refill the refrigerant, you must use a specialist kit to attach to the low pressure end and the high pressure end to the condensing unit.

The low pressure and high pressure ends can be found in the owner’s manual of the ac unit or conversely can be found via trial and error as the high pressure connector can only connect to the high pressure end and conversely low pressure end with low pressure. You must then make sure that you are filling the ac unit with the correct refrigerant and to the correct pressure as specified with the owner’s manual, manufacturer websites or online form.

These are the most common DIY fixes which you can do at home all of them are complex and will take some time for some one who is inexperienced. You can also risk damaging the ac unit further if you haven’t done everything correctly. This is when you should ask your self if you want to risk damaging the ac after hours trying to fix it or pay for a train professional to do it.  Well if you want some one to carry out a HVAC repair ( air conditioning repair ) you might as well choose an professional, well trusted and competent company to do it.


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