When I measure the watts being used in heat mode and the system is not heating, there is 0 watts being used. Once put into cooling mode and cooling is not in effect, there is voltage on the solenoid, but the wattage varies vastly every second. It can go from 0 to 1 to 5 to 10 to 3 .. pretty much anywhere, mostly in the 1 to 3 range. Is this normal ? I would have thought it would just pull a set number of watts, but this seems to change every second. The geo operates just fine, this just confuses me. Any ideas on if a solenoid is constantly charging at different rates ?