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NTI legacy boiler AOS

siasia Member Posts: 3
edited October 13 in THE MAIN WALL
Turned on my boiler and getting an AOS error code. Any tips?

Comments

  • IronmanIronman Member Posts: 5,805
    The flue pressure switch is not closing.

    Check the intake and exhaust pipes for blockage. Checked the condensate drain line for blockage.
    Bob Boan


    You can choose to do what you want, but you cannot choose the consequences.
  • siasia Member Posts: 3
    If the vent fan won’t run will it cause this error?
  • siasia Member Posts: 3
    Thanks I’ll check for blockages 
  • IronmanIronman Member Posts: 5,805
    sia said:

    If the vent fan won’t run will it cause this error?

    Yes.

    Bob Boan


    You can choose to do what you want, but you cannot choose the consequences.
  • HenryHenry Member Posts: 973
    Call a licensed professional. This is not a DYI fix.
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