Some of the most common repairs are usually simple electrical problems which can make the outdoor condensing unit trip the breaker or blow the fuse in the electrical disconnect. It is important to have the electrical components tested at the beginning of each season to avoid further damage from what was just a simple problem. It could save you the cost of grounded compressor.
Also many air conditioners are low on refrigerant (Freon) in which case the most common area for a leak would be at the service valves. It is also Common for freon leaks to form at the indoor evaporator coil. If your system is low on refrigerant, you will need to have a proper leak search performed in order to find the source.
If you continue to run an air conditioner while it is low on freon, the compressor will overheat eventually causing a “Grounded Compressor”.
Clogged Condensate lines are caused by lack of Air Conditioning Maintenance. The seasonal routine of clearing the air conditioner drain can save your basement from flooding and even worse dripping through an attic ceiling.
It is a good idea to have a water protection device installed on your system especially if your unit is in the attic. There are many different types, and they are design to shut the system down when a back up occurs.