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GB142 Question

Mpj
Mpj Member Posts: 109
in THE MAIN WALL
Hello All,

I just had a service call on a GB142/24, it was a 2F code which is switch related.

The boiler had 10PSI, I raised the pressure system turned on, ran though a couple of cycles working fine.

Looking though the manual for guidance I noticed it could have been a safety switch problem. My question is what is the safety switch and what does it do? It is not pressure or hi or low temps.

Thanks,

Comments

  • Ironman
    Ironman Member Posts: 7,550
    Pressure or Flow

    2F code is a flow or pressure issue. Boiler psi must be 15psi min. on boiler display. If that's okay, then look for a flow problem through the boiler.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • Mpj
    Mpj Member Posts: 109
    Buderus

    Ironman,

    Thanks for the reply, it was a pressure problem. I was just wondering what that safety switch is for, its not a limit or pressure. What safety feature does it do?

    thanks
  • JFear
    JFear Member Posts: 3
    Safety Sensor

    The 2F issue is generally flow related. and 2E is a pressure issue.

    The safety sensor you are referring to is essentially a high limit sensor.  It is monitoring water temperature in the heat exchanger.  It will shut the boiler down if the water temperature is too high, if the water temp rises to fast, etc.
  • Mpj
    Mpj Member Posts: 109
    Buderus

    Thanks for the answer
This discussion has been closed.

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