I have a reznor udap 60k btu heater that I've used for three heating seasons. Before last season i moved it into a different out building without any issues. I went to start it this season and when the thermostat turns on, the blower fan turns on almost instantly. There is no clicking or heat when the blower fan turns on and the exhaust fan does not turn on either. The green light stays steady green throughout the whole process and the orange light does not light up. Anyone ever have this happen or know what could be going on? TIA