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Relay clicking at shutdown....

ThurmanThurman Member Posts: 5
I have a small Utica basic gas steamer going on its second season.  The Honeywell gas valve is click-click/ stagger/  clackle-clicking on shutoff for 30-45  seconds of unwelcome and irritating regularity.  The question is: Is the relay cleanable, and/or replacable by the above average mechanically inclined?  Thanks for any and all suggestions and really love the site.  Checked all wiring, everything is tight. 


  • RobbieDoRobbieDo Member Posts: 131
    Gas valve "clicking"

    Is the proper voltage getting to the valve? Need more info on this, gas is dangerous if you don't know what your doing.
  • Tim McElwainTim McElwain Member Posts: 4,362
    Give us some Model numbers

    and Make on the control making the clicking noise.
  • ThurmanThurman Member Posts: 5
    More info on the relay/control.....

    Thank you for the reply and needed to find my magnifier for the model numbers to magically appear.  The boiler is a Utica PEG150CDE gas steamer and the gas valve is Honeywell VR8200H calling for 3.5 regulated pressure/3-5 range, needing a class 2 transformer/ 24volts.  Measuring output at the transformer I get 27V and measured V at the relay with unit idle I found 3v at the switch.  Was expecting more like 24 and 0V here.  Please comment.  The unit works flawlessly, it just stumbles at the relay when the T signals shutdown.    
  • Tim McElwainTim McElwain Member Posts: 4,362
    What is this relay you are talking

    about? Or are you saying the clicking noise is coming from the gas valve? There is no relay in the gas valve, that valve is a dual seated valve and the valve that clicks when power is applied is the first valve in the gas flow which is a solenoid.

    With a call for heat you should have 24 volts across the coil in the valve and the valve should open and the burner come on. When the thermostat is satisfied there should be no power at the gas valve. If there is then wiring is messed up.
  • ThurmanThurman Member Posts: 5
    Thanks Tim, one more quick question plz.....-7

    Ok, no relay,,,,The solenoid at the gas valve is suspected. I will get a schematic in front of me with the magnifying glass and figger this one out.  If I am getting 27V output from the transformer, does that indicate failure of the transformer?
  • RobbieDoRobbieDo Member Posts: 131
    24 volts

    Here is a link to the wiring schematic for the gas valve.

    It depends on how your is wired but you should not get any voltage at the gas valve solenoid with the thermostat not calling for heat. If you get 24v out of the transformer its good, you need this control voltage to operate the circuit. If you don't understand let me know. Thanks
  • ThurmanThurman Member Posts: 5
    Thanks Robbie

    Thanks for the link.  I really am wondering though why I get a 27V read at the transformer, Don't think my multimeter is off that much, and realize that voltage at the valve is not kosher during off cycle. Will recheck everything and get back to you, thank for taking the time.     

  • Tim McElwainTim McElwain Member Posts: 4,362
    A NEMA rated class II

    transformer under standard DC20-92 will put out between 20 to 27 volts from the secondary of the transformer. I would check polarity and phasing to ensure both are correct, do you understand what that is?

    If you are getting voltage back feed somehow it may not be enough to keep the valve open and hence the chattering of the solenoid.
  • ThurmanThurman Member Posts: 5
    Polarity yes, phasing not so much

    Thanks Robbie and Tim, Your professionalism is unquestionable, and The Wall is just a site about heating without guys like you....taking time to point the (sometimes) dangerously inexperienced readers and doers out there in a safer and more informed direction.  As one who has lived through many DIY experiences in deeper water than most would consider prudent, financial issues forced me to do my own boiler install 2 years ago.  Nursing an ancient coal conversion gas steamer through twenty winters without the benefit of Heating Help got me only so far.  Research on this site gave me the confidence and information to pull off a correct near piping install with drop header and all the bells and whistles (isolation valves..etc.)  I would not recommend this to anyone that didn't have great plumbing skills and a strong back.  Big, big job.  Perhaps I should have checked around for a site called ElectricityHelp, as this is my weakness in the trades.  I can only assume that you have had a long winter responsibly answering questions from guys like me that are seemingly clueless in the heating field.  For all of us fearless, non professional DIYers with limited, but above average skills in several fields, I thank you for providing the solid and trustworthy information that gets us through one unknown and on to the next challenge. I'm calling my electrician in the morning......Thanks for the clues.  Learned a bunch here and still learning.  Reversing the polarity only works in Godzilla movies.   Now on to the next phase. 
This discussion has been closed.


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