Problems with Vaillant TurboMAX Plus Timer Switch???

Discussion in 'Plumbing and Central Heating' started by Danny9, 25 Jan 2009.

  1. Danny9

    Danny9

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    Vaillant TurboMAX Plus Combi Boiler is not switching off as per the settings on the timer switch. It's working perfectly okay apart from that. Turns on as per timer settings - doesn't turn off.
    Is it anything more than just a faulty / broken timer switch? Is there a simple rectification of the fault? If it needs work, what are the estimated costs?[/i][/b]
    Cheers
    Danny
     
  2. Agile

    Agile

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    New timer probably about £40-£50.

    Cost to fit depends on firms policy. We would charge our standard diagnostic fee if a rapid response is needed as its then a repair. But if it was done later as we could fit it in we would charge it as a service.

    Of course there may be a boiler fault! You could try to be clever and press the "i" button when its unexpectedly on and see what "s" code you get.

    Tony
     
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  4. Danny9

    Danny9

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    Cheers Tony
    Code when 'i' pressed is S.07 - Water pump over run. Normal when pump is on to heat water to rads. S.08 - Anti cycling mode when pump stopped. Also normal.
     
  5. Agile

    Agile

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    The boiler would not give those s-codes if it was firing up!

    When heating times out the boiler runs the pump as shown.

    Are you really saying the burner is fired up when its showing s07 ?

    Are you sure that you are not confusing pump over run with boiler firing?

    Tony
     
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  7. Danny9

    Danny9

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    I got it wrong. The burner is firing up and showing S7.
    Just goes to show how much you need to know before attempting diagnostics.
     
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