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Valliant EcoTec Pro 28 - Pressure tops out

Discussion in 'Plumbing and Central Heating' started by ScoobyG, 5 Nov 2016.

  1. ScoobyG

    ScoobyG

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    Hi, i think i may have the answer from other posts, but nothing specific to my issue so want to confirm before calling a tech.
    • Boiler over 5yrs old
    • Cold Pressure set 1.2
    • Water temp - 60c
    • Heating temp - 60c
    • no noticeable issues with water
    • Heating - comes on and heats up, but soon stops
    • Pressure at 2.9 bar upwards and display flickers between bar reading and temp reading
    • pressing - & + show Sf.h
    • Heating will fire up again after a while when pressure drops
    Can anyone please confirm / advise if this points to a pressure sensor problem? Assume this is an engineer call to fix and not something i can do?

    Thanks for any help given,
    Gary
     
  2. steve32

    steve32

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    Expansion vessel charge see faq
     
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  4. ScoobyG

    ScoobyG

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    Excellent, ordered a pump and gauge to arrive tomorrow. Taken the front off and located the valve. Will update on success or ask another stupid question if needed.

    Thank v much for the swift reply!
     
  5. dreadnoughtheating

    dreadnoughtheating

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    dear Scooby, in theory removal of the front cover of your vaillant (to test/recharge the vessel) is Gas Installer territory, as it forms the room-sealed casing.

    Just saying this as DIY Gas Advice is against DIYNOT.com rules, and the helpful advice from steve32 is contrary to this.

    That is all.
     
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