I have a Fedders 080n3d forced air gas furnace. At first the unit would not shut off and a tech remove the relay to replace. I was unaware he had done so and I turned the power switch on and unit fired up but out after a minute. Relay replaced but the unit will not ignite.Turned the power off then on at the breaker box and now unit does not make a sound but the pilot is still lit. I was wondering if there is reset button because we can't find it.