HVAC Questions? Ask an HVAC Expert for Answers ASAP
Thermostat calls, small fan starts, igniter glows. As far as I can tell the pressure switch which is located on top of the gas valve is not getting any power through the blue and red wire coming from the intergrated furnace control and therefore the gas valve is not opening and no ignition after that. I held my multimeter on the blue and red wire through the whole sequence and the voltage stayed at zero volts.
That's what I was thinking as well but wanted an expert to agree. I was set up for AC voltage in all my measurements. Would you suggest I get a Hvac technician to change it or do you think it is easy enough for a do it yourselfer?