Can you please tell me where I can find the diagram for the intertherm central electric furnace terminal box. The model # is FEH-020HA-03. Can anyone help?

If it is in a mobile home some times they put one on the blower housing for the controls ETC.

I have an intertherm AC/Heat package unit (1996) just the other day the fan turned itself on and ran for about 5 minutes then turned itself off. This has been doing this now on a regular basis. The air it blows is a bit warm. The heat switch is off as is the AC switch, any ideas.

Dan

With this type system if a limit opens on the heating side the blower will run until it resets. Sounds like you have a heat sequencer sticking. Look for a high electric bill this month.