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Hydrolevel Safgard LWCO's (mod 400)

Anyone experiencing these controls NOT shutting down boiler on low water? So far, I had three in less than a month. Most recent, on a brand new Thermoflo.
Also, some that do work initially aren't "playing well" with water feeders.
thoughts.....?

Comments

  • ChrisJ
    ChrisJ Member Posts: 16,308
    Only thing that comes to mind is I've heard using too much sealer on the threads of the probe can cause problems, but I don't know what kind of problems.

    Single pipe 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • Robert O'Connor_12
    Robert O'Connor_12 Member Posts: 728
    packaged boiler.
    took the probe(s) out & cleaned them. I don't use Teflon tape or paste on them either. I typically use the grey dope when replacing them.
  • gcp13
    gcp13 Member Posts: 122
    only pipe dope on probe, teflon on probe blocks grounding the probe and will not work