Shower running cold

Joined
26 Oct 2010
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Location
Leeds
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United Kingdom
My shower has recently started running cold water,it was fine until 2 week ago and it just started flowing with cold water.Any ideas what is stopping the water getting hot.
 
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The shower is just a bar with on/off knob at one end and temp control at the other,i removed the temp knob and manually turned it to hottest temp but no difference.I have an ideal isar boiler (rubbish i know)and live in a ground floor flat.What else do you need please.
 
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Is it only the shower that is cold? if so then it could be the thermstatic cartridge.
Have you checked all valves are on and that the hot filter into the valve is not blocked.

Bodd
 
The water is hot everywhere else,the boiler is working fine and is the correct pressure,the shower just stopped giving hot water
 
try running the shower without the showerhead on the pipe, if it runs hot then its an indication that the flow through the shower is not sufficient to turn the boiler on.
 
No difference with no shower head and the boiler was heating up DHW when shower was on.If it is the cartridge what do i do please.
 
Try turning the hot tap on in the bath, turn the shower on and slowly turn the hot tap off. Does this work ?
 

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