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How can I fix my Ariston EuroCombi A/23 MFF1 boiler?

When hot water is running the boiler switches off for a number of seconds and then re-ignites. This on and off is continuous whilst running the hot water causing the water to heat and cool continuously. Has anyone any ideas?

Ray G
July 2013
AristonHeating, Home Heating SystemsAriston Eurocombi Water
change NTC if problem is gone if still ,change divert motor both are on left side of boiler ,to change NTC shut cold water inlet ,to change motor pull out clip and three wire connection shut boiler off ,you can buy both on E Bay NTC 6 pound motor 10 pounds

ltd
July 2013

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