hi, i just fired up the furnace today and discovered that the heat will not blow thru the vents....i checked and the burner on the furnace is coming on and when the temp gets too hot the high limit control is cutting it off, without the fan ever coming on..... I had the fan relay replaced this past summer after an electrical power outage and it blew when the power came back on...... the fan comes on fine when i place the t-stat in the cool mode..... possible that the high limit control is bad? If so how do you go about checking one of them??? I have extensive know how in the use of a volt ohmeter. any advice would be greatly appreciated.
P.S. it is a Rheem furnace Model # RGAA-0800 Serial # EN3D104 F2777 6301