I am having a problem getting my gas furnace running. It is a package unit and the AC works. The blower motor runs when I turn it from auto to on on thermostat. When I switch thermostat to heat and call for heat nothing happens. I have 26 volts between the red and white wires from thermostat where they connect to the control board. All the limits are closed and the centrifugal end switch on inducer motor is open. It has a Honeywell Smart Valve gas control with a hot surface igniter. I have 26 volts going to the smart valve but only getting 13 volts out to the igniter/flame rod pilot assembly. My question is with the voltage being low out of the smart valve enough to prevent the sequence of operations from beginning with the inducer motor running? That voltage being low is about all I can find but just not sure if it will stop the sequence.