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Re: suburban furnace problems by BUBBA THE BUS TECH
Post New Message Check the following in this order, this is important as things early in the list damage part later in the list.

Check all floor vents to make sure they are all open and un-restricted, partially closing off just one will cause the furnace to over heat and shut down as in your discription.

CHeck inside furnace compartment to insure all heat ducts are conected. Make sure all the furnace duct conections not in use have the block plates installed.

Check and change the High Limit switch.

Do you have an AC? Is it controled by the same thermostat as the furnace? If so all conections need to be checked in the AC. We see about 5 a year of the AC boxes that conttrol the furnace go bad, But they are expensive enoough you need to prove if they are the problem. We generally wire the furnace to a furnace only t-stat and run a full day od cycles before changing it.

Last suspect is a control board. If thats the problem this symptom will not show up on a test box at the RV Parts store. So this is the last part to change.

Good LUck
All Messages in ThreadAuthorDate
Post New MessageSuburban furnace problems zach 11-30-14  
  Reply to MessageRe: suburban furnace problems BUBBA THE BUS TECH 12-1-14  
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