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Wallstar burner wont switch off

Discussion in 'Plumbing and Central Heating' started by booner, 7 Jun 2020.

  1. booner

    booner

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    So, as the title says, i noticed last night that house was getting hotter, turned thermostat to zero, switch everything to off on the main control but still it wouldnt switch off, ended up taking out photocell and fuse in an attempt to stop it, not sure which worked but thankfully it stopped, any ideas on the problem? Cheers
     
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  3. oilhead

    oilhead

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    Stuck actuator on a zone valve or three port valve, depending on what system you have. Can you identify the valve controls, usually around the pump and cylinder?
     
  4. booner

    booner

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    Yes, drayton valve control actuator
     
  5. booner

    booner

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  6. booner

    booner

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    One actuator has been off for years, i think that meant i cant do c/h only?? Which isnt a big problem
     
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  8. booner

    booner

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    And the pipe with no actuator is still pretty hot from last night, is that normal? Thanks for responding btw
     
  9. booner

    booner

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    So, the burner wont fire up now, and on closer inspection, the actuator cant turn the valve when its asked to, lastly, is this valve position on or off.....
     
  10. booner

    booner

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  11. booner

    booner

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    Actuator turns about a third when its off of the valve, wont move at all when its on the valve
     
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