[masraum]

Yep, just checked. The blower does not come on when the heat does.

So then I swapped the high and low blower circuits and kicked the heat on again and the blower still did not come on.

I swapped the blower circuits back and kicked the fan to ON and it's running fine.

So based on the blinking light (that indicates normal based on both the manual an the sticker on the outside of the furnace) and the fact that the blower never comes on by itself with the heat, there is something wrong.

Is it two different blowers or I assume a multispeed blower. Based on the fact that the blower will come on in the ON position, the blower should be good.

When I have the fan set to ON, the house stays warm. The house also stayed cool all summer.

I'm guessing that it's not a replaceable relay, but probably something built into the controller circuit board which means I'll have to get that replaced. Ugh.

Any new thoughts?