The air conditioner will run for approximately 5 to 10 minutes and then shut off for about 5 to 10 minutes and come back on. I checked all the safeties and none of them are causing the issue. From that point I tested continuity in the thermostat wire and had no continuity, indicating a break or several breaks and thermostat wires Y1 and G. Also the thermostat connection pens are not making site connection. I will need to come back and install new seven wire thermostat wire and a new non-programmable to heat to cool thermostat. I have a verbal agreement for parts and labor. I told him will come back as soon as possible hopefully tomorrow.