ariston eurocombi doing what it wants

Postby temps » Mon Nov 09, 2009 11:33 pm

Hi Guys,
Wacky ariston eurocombi a23. boiler will stay on for up to 15 mins constantly firing and doesn't look like it's modulating down.
Then it will switch off and start cycling on and off for about ten mins, then go back to full burner mode again. It does all this regardless of what I do ie switch on/off at the clock or turn the CH temp right down, it just keeps going. DHW fine.
What you reckon lads apart from a new boiler !!!!!!
Could do with a few tips before I start throwing parts at it.

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