I would like the manual for a Nordyne Furnace Model #C3BA-024C-A. The furnace stopped working, the fan runs when thermostat fan switch is set to Auto, but it will not ignite and heat. It buzzes quietly until the power is turned off, then it returns when switched back on. There is a red LED light on inside - on a circuit board that stays on all the time. Can you help?? thank you