Hi Robert. Thank you for your quick reply. I guess the best way to see if the switch is working is to install it, and connect a meter to it. When I power the Furnace on, if it's working properly, I should get 24 VAC through it, right? I also may have to face the fact that it's a very delicate switch...

Hi. I have a Coleman DGAA070BDTA, and I'm getting three flashes on the Control Board telling me it's not seeing the Combustion Air Switch close. Being an Electronic Tech by trade, I took this switch off and grabbed my DVM. It appeared to be stuck open because only after I applied pressure, then suct...