It could be any of several things. It could be that the system doesn't always equalize (usually when the system has a thermostatic expansion valve) and compressor won't start against the pressure difference. Usually a hard start kit will solve this problem. You may already have a hard start kit and it may be bad. You could have a bad capacitor, causing the compressor to have a high amp draw and the windings getting hot and the internal overload in the compressor tripping until it cools off. You could have a bad comprressor drawing high amps and tripping the internal overload. You could have a dirty condenser, causing a high pressure swith to trip. Your fan motor can be bad or running slow and not at full or proper speed. You really need to have this checked out by a HVAC service technician, It's not good for the compressor to let this go on for very long.
Answers & Comments
It could be any of several things. It could be that the system doesn't always equalize (usually when the system has a thermostatic expansion valve) and compressor won't start against the pressure difference. Usually a hard start kit will solve this problem. You may already have a hard start kit and it may be bad.
You could have a bad capacitor, causing the compressor to have a high amp draw and the windings getting hot and the internal overload in the compressor tripping until it cools off.
You could have a bad comprressor drawing high amps and tripping the internal overload.
You could have a dirty condenser, causing a high pressure swith to trip.
Your fan motor can be bad or running slow and not at full or proper speed.
You really need to have this checked out by a HVAC service technician, It's not good for the compressor to let this go on for very long.