Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Honeywell L408J 1009 Vaporstat Failures

2»

Comments

  • Gordo
    Gordo Member Posts: 857
    I suspect that the diaphragm is not not being sealed around the edges properly and that is allowing pressure to leak away, drawing in non-compressible water into the diaphragm space.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
  • neilc
    neilc Member Posts: 2,855
    how does it matter that water (or oil, or air) is under the diaphram, it still pushes up, right?
    isn't this just like a pressure reducer diaphram doing its same thing?
    or is this that the sensitivity of ounces isn't transmitted well thru the water?
    without a gage there telling us otherwise I'm guessing we're just leaking and not building pressure at the trol.
    known to beat dead horses
  • Double D
    Double D Member Posts: 447
    I just installed a new Honeywell L408J1017, 0-4psi vaporstat today and it makes that popping sound. The last 2 did not make that noise. Should I exchange it or wait and see?
  • dean_20
    dean_20 Member Posts: 16
    Now I'm glad I listened to Steamhead years ago and put a mercury one on my boiler.
    BobC

Categories