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Vaillany Combi boiler igniting without hot taps on

Posted: Thu Jul 19, 2007 12:07 pm
by suew
Anyone help there may be a simple solution...I doubt it.

My Vaillant boiler[b] old[/b]!! Has started to ignite without any hot water taps on?
The flame stays on for a few mins then goes off but the (pump or fan?) stays on constanly.

Only started this morning..I have turned it off at power.
Any ideas thanks :?: