Plus AND Minus 12v from AC to Thermostat
I have a Dometic A/C and a Dometic single zone thermostat. The thermostat requires plus AND minus 12 volts. The schematic of the A/C control box indicates that the plus AND minus 12v come from the pow...
Forum Discussion
hiker108 wrote:Because the control box supplies the 12v (+ & -) to the thermostat.
If I unplug the plus and minus 12v connector to the A/C control box, the voltage at the thermostat drops out. Why?
