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How to get hot water at taps only?

When I turn the selector on my Potterton Combi Promax to 'hot water only' the radiators still get hot. Will I need to turn off every radiator in the summer??
Markwood, March 2009
Come on Dan this is a combi. There isn't a cylinder.
Sounds like your diverter vale is at fault.

m, April 2009
I had the same exact problem.

How old is your emmersion heater? and is it a 'Indirect Cylinder'?

please see the link below:

http://www.diydoctor.org.uk/projects/domestic_hot_water_systems.htm

Dan, March 2009
link Click here to see other fixes for Potterton.