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Radiant heating resetting itself

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dermy22
dermy22 Member Posts: 8
in Radiant Heating

I turned on my radiant heat this fall to get ready for winter. Upon turning it on, the system resets itself constantly and doesn’t come out of the loop. These control boards seem to be the issue. It almost sounds like they all had circuits tripped in them and make a loud tripping sound when they reset every few seconds. I purchased the house with this system in place. It worked fine last winter (first year we were here) now it’s giving me trouble. It’s also hard to find a company in southern Massachusetts (Taunton area) who will work on this. Struggling where to go from here and would appreciate any guidance. Unfortunately I can’t upload a video to show the loop and the noise but this image showcases the beginning of the fault.

IMG_3738.jpeg

Comments

  • mattmia2
    mattmia2 Member Posts: 15,628

    look at the power supply to the controllers. that is kind of the classic symptom of a failed switching power supply, it can supply enough steady state current but it can't supply enough current at start up because the capacitor has failed. Either there is one central supply that is bad or the supply in all of them failed last year and when you powered them off and tried to power them back on this fall they couldn't supply the startup current.

    dermy22Alan (California Radiant) Forbes
  • dermy22
    dermy22 Member Posts: 8

    I can check. The weird thing was they would occasionally work for a few days before falling back into the loop. Now the loop won’t break at all. Would this be an electrician or an HVAC to repair this in your opinion?

  • mattmia2
    mattmia2 Member Posts: 15,628

    hvac. need to find someone that is good at controls. it looks like those controls are pretty inexpensive, try changing one and se if the problem goes away.

  • Sol_Brother
    Sol_Brother Member Posts: 34

    Why do two of your controls show -55 degrees? Since that is the lowest temp these controls can display, wouldn't that imply disconnected sensors? I don't see how that would lead to cycling, though.

    Sol Brother
    Alan (California Radiant) Forbes
  • dermy22
    dermy22 Member Posts: 8

    Hey @Sol_Brother -55 is the beginning of the loop. It’s a video but I can’t upload that here. I can only upload a still. It’s only on -55 for a second before it going to the next part of the cycle up. I just happened to catch the screenshot when both were at -55 by chance.

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