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Boiler LWCO

On restart red and green are on. red blinks and goes off. There is one click then no hum and no boiler fire. Ideas?


  • Fred
    Fred Member Posts: 8,542
    Based on the sight glass, does it look like the water is low in the boiler? Have you checked the LWCO to make sure it is functioning? Has the probe for the LWCO been cleaned replaced lately? Have you checked the wiring between all of the safeties?
    Is there a delay on any of the safeties and are you waiting long enough for that delay to expire?
  • hoodster
    hoodster Member Posts: 2
    No. How would I do that? No. Yes.
    Yes. Yes.
  • Fred
    Fred Member Posts: 8,542
    edited January 2019
    Post a couple pictures of the boiler nd the controls and let us see how it is set up and what type of safeties are on it.