This post shares some great tips on how to repair some of the most common central AC system problems on your own. So, if you want to deal with many air conditioning problems on your own and save big on a service call, read on.
However, before we move ahead, it is essential to know the following four most important components of air conditioning units.
- Evaporator – The fan in an AC unit blows hot air past the evaporator, a component that actually cools the air.
- Condenser – This is perhaps the most important part of a component of a central AC unit. And yes, it is the same box you always see outside the window of your home.
- Expansion Valve – This component takes out the pressure from the liquid refrigerant so as to convert it into vapor form.
- Compressor – It is a pump that is installed to circulate the refrigerant within the air conditioning unit.
A glance at Central AC Malfunctioning and its Fixes!
You can’t stand in front of your refrigerator all day to stay cool! You need to decide if you will wait for the technician or at least try fixing your central air conditioning problems on own. In this post, we’ll see which AC problems can be handled on your own and how we can successfully and safely replace those 3 parts of AC unit that cause most of the outdoor condenser unit failures.
To become a DIYer for your troubled central air conditioning system, you would require a few tools including a standard Multimeter and insulated needle-nose pliers. Now I am assuming that you have inspected your sick AC unit and furnace circuit breakers in the main electrical panel, in addition to cartridge fuses. To fix the problem in your AC system, you may either replace all 3 parts at once or do the replacement one by one.
Step 1 – Check the Furnace
First adjust your thermostat into A/C mode and then lower the temperature. If the furnace fan stars, the problem isn’t in the furnace. But if the fan doesn’t kick in, reset the circuit breaker in the furnace. If the problem is still not resolved, next you may check the outside condensing unit. Your compressor and fan should be up and running by now. But if not, call a pro!
Step 2- Clean Contactor Relay or Replace It
Blow air into contactor relay to clean it completely. If you fail to dig out all debris, you will have to replace the relay and then again try starting the system. The contactor relay rarely fails, but often it gets clogged with insects that trespassed in checking things out.
Step 3 – Replace the Capacitor
Your central AC system has two capacitors – ‘Start’ and ‘Run’ capacitor – that store electrical energy to kick start the compressor and fan motor. Some systems have a single capacitor for this two-in functionality. These capacitors have very high failure ratios, and when this happens, then the compressor and fan won’t start. In this case, you need to replace the old capacitor(s) with new one(s).
Step 4 – Replace the old fan motor with a new one
First of all remove the cover out of the condenser unit. Then take out the fan assembly from your air conditioning system and don’t forget to mark the bottom, so you can replace it in the right direction. Disconnect the motor by loosening the blade-retaining nut and pulling it off from the motor shaft. And fix a new motor.
Warning: Don’t forget to switch off the power supply before you start testing or repairing your AC system on own. And it is strongly recommended to avoid this job on your own, if you have no idea of electrical components and safety rules that need to be followed while working with them.
If the above fixes don’t work, call Cape Coral air conditioning repair pro and leave the rest on their shoulders. AC service Cape Coral is best known for their award-winning customer services, top-quality work and highly reasonable prices across the state of Florida, USA.
Sent to us by Samaira Brown