fault code for a centurion heating system

Discussion in 'HVAC Heating & Cooling' started by w1ljm, Dec 15, 2009.

  1. w1ljm

    w1ljm New Member

    Jan 14, 2006
    I have a centurion heating system model gf9s06012up11j that is a couple years old. It just stopped producing heat. I see that there is a fault code of three red flashes. (Pressure Switch stuck open). What does this mean and where is it so that I can unstick it? Also ! the basic info on the sheetmetal cover talks about a reset switch for the history of warning codes. Where should that reset be?
  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego
    Not knowing your system, it sounds like you have a draft inducer blower for the flue. In that type of system, there is a pressure switch to monitor pressure in the outlet of the blower....we don't wan't the gas burner coming on if the blower is not running. Follow a small piece of vinyl tube from the blower volute...it will lead to the pressure switch . Sometimes it can be cleaned. Maybe just replace it.
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