Any HVAC experts?

[wingedfish]

Originally Posted by weyburnt

Yes this would make sence except he said this still happens when the t stat is switched off. Also I don't think most t stats jumper the y and g when in auto. I'm pretty sure the furnace board takes care of this.

If you have AC, try this on your furnace. Jump r to g at the furnace and no matter where the tstat mode is placed, if the fan switch is in auto, the AC will come on. It is a well known fact in the trade.

Originally Posted by weyburnt

Or else when the fan switch was in off, and the t stat was in cool, the fan would not run.

There is no off position for any fan switch on any thermostat.

Originally Posted by weyburnt

I do not believe a relay is the way to go.

You are wrong.