I've never had the oppertunity to install one of these until the other day.
American standard 90% furnace with a A/S heat pump attached to that. The wiring actually went pretty easy, came with a great schematic.
Anyway the problem... When I run it in cooling or heating (when the heat pump is running) the blower comes on right away as it should. But when switched to Em heat when only the furnace should be running, the blower comes on at the same time as the draft inducer. The outside unit doesn't come on, so I'm pretty sure everything is wired right. I'm just stumped why the furnace doesn't do it's normal startup.
I also can't recall what fossil fuel kit it was, but I'm pretty sure it was a BAY#### if that helps any.