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Hydrolevel 450 Probe

I just replaced the EL1214 probe on my Weil McLain 85k boiler. I used only a spit of dope on the brass threads of the probe-no Teflon tape. I've got full meter deflection on conductivity between the probe' s 1 1/8" fitting and the boiler.

No matter how much water is in the boiler, the Amber low water light on the 450 stays lit and the LWC continues to ask the autofill for water.

What am I missing?

Thanks, fellows.


  • ChrisJ
    ChrisJ Member Posts: 14,113
    edited September 2016
    Maybe the probe wasn't bad in the first place.

    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
  • ratio
    ratio Member Posts: 3,377
    Just FYI, I had to replace the EL-1214 probe on my lwco last year, it was fouled with a layer of minerals over 1/4" thick before it failed to sense the water in the boiler. It doesn't sound like the probe is the problem to me either.
  • BoilerAl
    BoilerAl Member Posts: 2
    I've emailed to Hydrolevel, too. Someone must have run into this situation in the past. You guys probably right: not the probe.