MOdel NULK100DH03 867.779432 It had been clicking a lot while it was running so I watched it and the flame would go out but the main blower would stay on and then in a couple minutes the flame would re-light. It did that for about a month now it's not heating at all. When you turn it on and it gets heat signal (checking board at C & W terminals I get 24 volts) Nothing happens for a while and then the main blower comes on, but no flame, inducer fan never comes on, no clicking sounds & ignighter never glows. There is no voltage going to inducer motor. There is gas in the tank. Picture included. Thanks!!