Britony Combi SE 80 DHW Problem

[RichieRich73]

I have a problem with the above boiler. You have to turn the taps on full to get the hot water to come out. When the tap is turned on low, the actuator moves, but does not go down enough to operate the microswitch that starts the burner and pump. Water is not as hot as it should be suggesting to me that the 3 way valve us not opening fully. Could this be a dodging actuator, or could it be the valve sticking and not allowing the actuator to operate properly? Can the valves be cleaned or just be replaced?
Thanks,
Richard

 

[Gas1976]

Sounds like domestic hw diaphragm is worn

 

[RichieRich73]

Thanks for the response. Where is the diaphragm located? I guess in the actuator above the valve?
Richard

 

[RichieRich73]

I replaced the whole actuator and diapragm unit, On inspecting the old one, it looked OK, and the valve is still not pushing down enough to operate the microswitch.
Now I want to remove the 3 way valve to inspect and clean, does anyone have experience of how to do this? The manual says to twist off after the actuaotr has been removed, but it looks more complicated than that to me.
Thanks,
Richard

 

[ollski]

Clean and lube the water control valve under the diaphragm housing. (61301952)

 

[markmoriarty]

Did cleaning the water control valve work? I have the same problem - thinking of just replacing the unit.

 

[Gees]

Did cleaning the water control valve work? I have the same problem - thinking of just replacing the unit.

It would be worthwhile removing and examining the flow regulator assembly ( look for a worn/broken plastic part within the unit ) this assembly is in the water path between either side of the diaphragm and when it failes ( like mine did ) the result was EXACTLY as is described here.

Untitled

• Gees
• 9 Oct 2010
• 2

This was the culprit when I had this problem. Unfortunatly you will have to get the unit as a whole... Its very easy to replace.