Boiler relay board making noises

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• Docfletcher Posts: 475Member

  January 28 edited January 28

  First thing I'd do is swap the relays to see if the problem moves to Zone A. If it does the relay is the problem. I would replace both relays as a matter of course. I am not a pro.
  

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• Jamie Hall Posts: 11,460Member

  January 28

  Also check all the connections and wiring -- and thermostat. If you are losing signal voltage anywhere along the line that can cause the problem.

  Br. Jamie, osb
  
  Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.
  
  Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch

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• hot_rod Posts: 12,038Member

  January 28

  what's the brass looking dohickey at the bottom?

  Bob "hot rod" Rohr
  trainer for Caleffi NA
  The magic is in hydronics, and hydronics is in me

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• rick in Alaska Posts: 906Member

  January 28

  Current relay??
  Rick

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• klin816 Posts: 2Member

  January 28

  @Docfletcher I can try swapping the relays but I did change a new relay for Zone B but it didn't do anything.
  
  @Jamie Hall Do I call an electrician or a heating repair guy to check the wiring? I don't have any knowledge about a boiler.
  
  @hot rod_7 I have no idea tbh. This is the setup when I bought the house.
  
  @rick in Alaska What do you mean by "Current relay"?

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• Jamie Hall Posts: 11,460Member

  January 28

  That's a good question, @klin816 . Ideally, either one should be able to check that you are getting the correct voltage at the relay -- probably but not certainly 24 VAC -- and then, if you are not, track down which wire or connection or other device is causing the problem. Ideally. In practice... perhaps a really good electrician with some imagination is the better bet, but I wouldn't want to lay odds on it either way

  Br. Jamie, osb
  
  Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.
  
  Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch

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• Docfletcher Posts: 475Member

  January 28 edited January 28

  If you get chattering when both zones are calling you can try...
  Turning zone A off and have zone B call for heat. Does it chatter now?
  
  

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• HVACNUT Posts: 2,635Member

  January 29

  Is the thermostat for zone B heat only, or A/C also?
  Nest thermostat?
  On the Argo board does the zone B thermostat wire go directly to the thermostat or to an air handler or relay first?
  With the slot screw terminals you can tell it's an old Argo and the problem could be internal.
  Most times I get a call for a chattering cube relay, its usually a separate 24v source butting with the transformer in the zone board.

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• JUGHNE Posts: 6,217Member

  January 29

  Could the circulator wiring run thru the current relay?
  Seems to be the only thing to draw enough current to activate it.
  T-stat does a relay to start pump, current relay starts boiler??
  Seems pretty strange if that is the case.

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• EBEBRATT-Ed Posts: 6,115Member

  January 29

  Turn zone A stat down so it does not call and try zone B by itself and see how it works.
  
  If it still chatters, Disconnect both thermostat wires for the offending zone B. Connect the two thermostat terminals with a short jumper wire and see if the relay chatters then.

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