Worcester combi boiler hot water issue

Joined
13 May 2005
Messages
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Location
Lincolnshire
Country
United Kingdom
I've got a Worcester Bosch Greenstar 28i junior combi. When I have the eco button on so no preheated water it works fine both hot water and heating.

If I run eco I struggle to get any hot water but the heating is always fine. When demanding hot water in eco mode the boiler tries to fire up and I've noticed the central heating pressure gauge fluctuates when it's trying to change over I presume.

Does this point to a faulty divertor valve?

A full shut down and reset seems to cure the problem as well as always having eco turned off.
 
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