Replacement shower valve not working

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6 Jun 2012
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Location
Wolverhampton
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United Kingdom
I have an electric power shower with a three dial two way thermostatic mixer shower valve, in which the thermostatic valve had seized, replaced the whole shower valve yesterday but when I turn it on nothing happens - no water comes out, pump does not start up. Didn't change anything else and checked everything is back on, so at a loss as to what to check, unless pump just stopped working?

Any suggestions much appreciated!
 
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Your pump wont come on until the water is flowing above a certain rate.

Also i believe a lot of these thermostatic valves need both hot and cold water present to work.

How did you isolate the water when doing the change? Did you have isolater valves or did you have to drain down the tank? If the tank has been drained, you may well have airlocks. Do you get water from your bath taps?
 
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Pump is a Stuart Turner Showermate 1.4 bar twin - shower valve has max of 5 bar and min of 0.5 bar.Have checked fuse is okay so assume it is getting power.

I took shower valve off and could not get air to come out when I blew through hot inlet so have changed it with suppliers who confirmed thermostatic valve was not working properly. Have now fitted second valve but still does not work.

I drained water by turning off mains and gate valve from tank and then running taps. After turning waster back on and waiting for tank to fill have water coming from all taps. If have air is the any way of bleeding it out? Tank has self bleeder fitted.

Thanks for you thoughts.
 
Lay the shower head in the bath and turn the shower on/off/on/off/on.

Hopefully it will pull the air out or stick a wet vac on the end of the shower hose and suck the air out.

Andy
 

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