I have a Coleman 7956a856 mobile home furnace. When the switch on the unit is on "Automatic" the blower keeps cycling on and off continually. If I flip the switch over to continuous of course it runs continually.

Seems like the fan control is out of range needing replacement. Post at this site under Coleman.

Index page (http://www.mobilehomerepair.com/phpbb/index.php)

They will answer your question and they can ship you a part if you need it.