The Internet is a gold mine of free information. Basically everything and anything under the sun can be found online including tons of instruction manuals and guides for DIY AC repairs. However, among the things that we would highly discourage is for people to play around with appliances, especially the more expensive and complicated ones, with DIY projects.
Proper AC repair requires knowledge, expertise, tools, and a lot of experience. Sure, you can learn more about troubleshooting of your AC and everything about AC maintenance online, but if the repair method requires more than just simple part replacement or switching on and off of a switch, then it would be so much better to call a professional to get the job done.
Truth be told, many would do DIY AC repairs to save some dollars. Of course, calling a professional to get help will cost you money. However, you must be extra cautious about this. Your AC is an expensive piece of home appliance and if you mistakenly use repair methods that aren’t the right methods for your AC, then you might find yourself with a more expensive problem such as calling a licensed repairman with a more complicated AC problem or worse, irreversible damage on your AC.
In addition, there are plenty of tools and materials for DIY AC repair that aren’t usually found in your home. You might find the right solution to repair your air conditioner, but purchasing the materials and equipment to carry out the repair job will also cost you money.
The most important factor to consider is the warranty coverage of your air conditioner. Many times, the warranty covers repairs required for the air conditioner but some people are a little impatient to wait for the repair schedule. And so, they tinker around with their AC thinking they can repair on their own. Usually, this may end up voiding your warranty.