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  1. G

    Vaillant eco tec 837

    Hi Sorry posted this in the wrong forum I have the above boiler, yesterday it wouldn't fire up, error code either F28 or F29. Today I've replaced the igniter and now have a good spark, but no ignition. Water pressure is 3/4 way up the gauge, Gas on the hob and gas fire is normal. Any ideas please.
  2. G

    Vaillant eco tec 837

    Hi I have the above boiler, yesterday it wouldn't fire up, error codes either F28 or F29. Today replaced igniter now have good spark but still will not fire up. No error code. Water pressure is 3/4 way up the gauge. Gas hob and gas fire work perfectly. Any ideas please
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