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Discuss EcoTec Plus 424, VR66, VRT350F - Y system 3 port valve problem in the Central Heating Systems area at ElectrciansForums.co.uk.

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  1. Peterppp
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    Peterppp EF Member

    Location:
    telford
    Hello, I am new here but desperate for help as this is first time I am stuck on regular boiler Y system wiring. I have installed EcoTec Plus 424 with clipped on VRT350F and control centre VR66. I have wired all as requested in manual and get problem with 3 port valve. It get's stuck in either HW (standard) or CH, i cannot get the valve to go to mid position even when calls for both water and heating. Firstly i thought it was something wrong with the valve - replaced, nothing. Can this be an issue with the control box itself or the programmer?

    I hope someone's here had "pleasure" with both these as this is my first time with them. I usually use Honeywell wiring centre which works just fine - but customer grrrr
     
    Last edited: Jul 22, 2017
  2. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    Seek advice from the manufacturer, perhaps not helpful on a Saturday night. Is it Valliant?
     
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  3. davesparks
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    davesparks Forum Mentor

    Location:
    guildford
    What do all those numbers mean?

    Is it a diverter valve or a mid position valve?
    Does it give priority to DHW and change over to heating once the cylinder stay is satisfied
     
  4. snowhead
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    snowhead Respected Member

    Location:
    Mildlands
    • Like Like x 1
  5. Peterppp
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    Peterppp EF Member

    Location:
    telford
  6. Peterppp
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    Peterppp EF Member

    Location:
    telford
    tried - no luck on Sat :(
     
  7. Peterppp
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    Peterppp EF Member

    Location:
    telford
    I did set the rotary switch to 1 but i guess this is not the thing
     
  8. Peterppp
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    Peterppp EF Member

    Location:
    telford
    just quick update - 3 phone calls to the manufacturer and 3 different opinions - engineer is going to be out tomorrow to check
     
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