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Saunier SD623 No HW

Discussion in 'Plumbing and Central Heating' started by paulwilliam, 17 Sep 2006.

  1. paulwilliam

    paulwilliam

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    Read couple of forums and changed diaphragm as recommended (full of holes) Thanks people. Feel confident fitted correct??? However actuating switch still not pushing microswitches 2,3.when hot tap turned on. Can turn on HW by pressing microswitches manually. Heating ok Pressure ok. Any ideas..
     
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  3. croydoncorgi

    croydoncorgi

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    Is diaphragm pushrod moving at all?
     
  4. kevplumb

    kevplumb

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    scale might be playing a part :idea:
     
  5. Agile

    Agile

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    Replacing that part without any leaks on reasembly is quite a task and hardly worth it on such an old and problematic boiler.

    When replacing the diaphragm did you check that the spindle was moving freely ( and dry and grease it ) ?

    Tony
     
  6. galwag

    galwag

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    water valve to this boiler has a built in differential valve
    from memory it is plastic with a small spring attached and goes into inlet side of valve
    if this is missing damaged or reassembled incorrectly then water valve will not activate microswitches
     
  7. paulwilliam

    paulwilliam

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    Push rod slightly moving but little force behind it. Will check spring and my fixing again. Selling house soon don't want expense of new boiler with new regs.
    Cheers Peeps
     
  8. Agile

    Agile

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    A brand new boiler under the manufacturers guaranty is a distinct advantage when selling a house and I usually suggest the advantage is worth £3k to £5k whilst the cost is about £2k.

    I hope you dont remove the light bulbs when you sell a property!

    Tony
     
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