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Slant Fin B200

L_I_John
L_I_John Member Posts: 1
edited April 14 in THE MAIN WALL

My B200 keep timing out with the error codes A01 or A02. I have to keep resetting it. No one knows what the problem is. What can I take out and replace it with?

20250413_195351.jpg

e it with. It has 5 zones.

Comments

  • 109A_5
    109A_5 Member Posts: 2,349
    edited April 14

    Were these things checked ?

    image.png

    https://s3.amazonaws.com/s3.supplyhouse.com/manuals/1282657809967/37801_PROD_FILE.pdf

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • 109A_5
    109A_5 Member Posts: 2,349

    Also understanding where the unsuccessful ignition and/or loss of flame happens in the operation sequence may help.

    image.png
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 17,601

    @L_I-John

    You don't throw away a perfectly good boiler because it won't run. If the technicians can't find the problem its because they haven't looked.

    Check "find a contractor" on this site

    And post your location we may know someone that can help.

    Are you on Long Island?

  • 109A_5
    109A_5 Member Posts: 2,349

    Also if the gas valve seems to randomly close or just not open, The 120V section of the Argus PHC794-S1 control board could have a failing solder joint and/or relay.

    image.png
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System

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