I am having an issue with my thermostat. When the heat is called for (going from 65 to say 70 degrees) the heating word shows and you hear the floor click on as it warms. That last for about 3-4 minutes than it shuts off for about a minute and repeats this pattern while the floor is warming, even thou it has not reached the desired temp. This happens in programmable mode and hold mode and whether its on the floor sensor or the air sensor. You can watch the floor temperature rise on the thermostat slowly and once it reaches the desired temp it shuts off and works fine. This is a 240 volt doing about 190 square feet. I changed thermostats and the same thing happens. I checked all the ohms and all readings are good.
Any idea what's going on??? Am I missing something?