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Mend Ariston Combi Heating Hot Water

Ariston Euro Combi SX 20 MFFICE Problem?

The boiler is 10 years old and recently had the valve replaced for the second time. It now:
1. Makes a "whirling" noise every few minutes when the GCH is on.
2. Also the hot water does not fire up unless the GCH is on.

Tony
March 2007

Ariston Heating, Home Heating Systems Combi Heating Hot Water

where can i get a flue kit as I have to move the boiler to another rooma and need a new flue

jayne
March 2011

Common problem is the rubbish diaphragm on these models. They're made of cheap material and wear away regularly.
Get someone to change this as this is the method used to heat water on demand, the diaphragm does not lift and make contacts meet, so new diaphragm (£15 I think) will sort it.
When the Heating is on a different heating method is used and the broken diaphragm is not used.

Golden
January 2011

Nope
Its Air in the exchanger,,, or partly blocked heat exchanger.

Cooperman
September 2010

I would say the diverter valve is at fault

Tim Short
March 2007

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Ariston Euro Combi SX 20 MFFICE Boiler Repair