A question about a problem using the Totaltouch (aka Carrier Climatouch) which is 24 vac powered, with an oil heat system and an air conditioning system - a new Trane. I want to be able to use only the heat when I need to run my backup generator, which supplies 240/120 VAC to it and 3 other circuits in my house (emergency power only - no air conditioning), but there's no "common" connection to power the stat from the heating system, and no "common" terminal at the burner's Honeywell control box (6 yrs. old). The stat runs fine controlling the air conditioning and heat when the ac power is on to both, but doesn't work for heat only when the power to the air handler is off and the heating system is on by itself. There is a common connection from the Trane air handler to the stat (5 wire system).
I'm going to contact my heating co. to see what they can do that allows the thermostat to be powered when the electricity is on only for the heating system. While I'm waiting for them to came and take a look, do you have any suggestions about what they might do?
I don't want them to mess up the thermostat or the controls in the air handler!