Have a quIck Mark III HVAC system question. What might cause the HVAC to cycle on/off whether in automatic or manual mode? Even though the system cycles, it does blow hot or cold dependent on the temperature setting. The cycling occurs about every 20-25 seconds and a slight instantaneous drop in voltagage can seen on the voltmeter. I’ve pulled the connections off the AC compressor thinking the Freon was low but it continues to cycle and blowing hot air.