Hello, I have a Tempstar, direct vent * & * 90% from - mod NUGS100BH04. On Nov 27th, I replaced the fan control box. It worked perfectly until yesterday morning * 27th, *. It kicked on for an hour, for the morning warm up, then it shut down before achieving the morning temp.
Since then I - replaced the thermostat, switched it to a different breaker, have over-road the safety switch on the side * bi-passed *, have tested the two leads on the fan door switch-power is there. I am mechanically inclined, could wire your house from the ground up, but not good w fine electronics. I have also tested the new thermostat w the fan in "auto" or "on" modes, NOTHING, the fan will not kick * The furnace; is completely quiet, the fan for the combustion system does not come on either, again NOTHING.
Yes, the new thermostat is set for heat at 70 degrees & my house temp is now 50 degrees. Usually, when standing by the furnace, when I flip the side safety switch to on, the furnace clicks internally. But now, NOTHING, it is entirely DEAD - NOTHING. Please I need some help !