Well, other than the obvious- the thermostat is turned up high and it is being satisfied and turning off ;-). But I doubt that is what you are saying.
An A/C can trip due to low voltage, low freon, high compresser head
pressure and probably others.
Low voltage can be checked with your panel meter, but I doubt that is the problem.
Low freon can be checked by feeling the return freon line to the compressor
. It should be cold and sweating. If it is at room temperature then it may be low on freon.
pressure is usually due to heat exchanger
fouling. Check that you are getting a good stream of water
out of the hull
thruhull fitting. If not then clean your heat exchanger
. If that is your problem, post and I will outline a procedure.