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    Vaillant Combi: Red neon lock-out problem

    It's either a VCW GB 242EH or 282EH - Have only got the book that came with the house and it covers both models. can't find the model number on the boiler itself. Last serviced winter 2001.
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    Vaillant Combi: Red neon lock-out problem

    Boiler (~10 years old) has developed random problem. Ignition lock-out (black) button pops out after period of normal operation. Adjacent neon comes on, boiler has shut down. Can only get it to re-start if left for at least 30mins (sometimes much longer). Typical failed re-start attempt is...
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    Boiler pressure dropping

    I have a similar problem but cannot find any visible leak site. Does anyone have any views on one possible explantion:- There is at least one location where a leak would not be visible/obvious. If general hot water tank (HWT) is also heated by the boiler CH circuit then there could be a leak...
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