Shower hot n cold

[goofy gorilla]

Hi guys I've had this thermostatic bar shower fitted last year, got a baxi combi boiler, boiler working perfectly fine...when I have a shower the water runs hot and cold and keeps doing it..any ideas what it could be ...else where around the house the hot water is fine?..whst shower is this?
Ta

 

[Stadan20]

Depends if you live where scale is a problem . Could be lime scale in the shower head . Remove the small shower head and try it . If it still goes hot and cold it could either be a blockage where the shower feed goes into or your shower thermostat has a fault

 

[goofy gorilla]

Shower is not even a year old doubt it would be limescale build up in such a short time. I was thinking more like the the thermostat or ceramic discs could be faulty...any idea what that shower is?
Ta

 

[bernardgreen]

Maybe the designed flow through the shower is too low to keep the combi boiler fired up.

 

[gas112]

baxi combi ? 105 e by any chance if so its the venturi in boiler that has broke

 

[goofy gorilla]

Boiler is working perfectly nothing wrong with boiler, not sure on the model, defo baxi, recently serviced by bg. I'm thinking the pipe are connected wrong way round..will check when I'm there later in week..

 

[gas112]

Boiler is working perfectly nothing wrong with boiler, not sure on the model, defo baxi, recently serviced by bg. I'm thinking the pipe are connected wrong way round..will check when I'm there later in week..

if its a baxi 105e the boiler will work perfectly well on heating and hot water to all other taps but will show exact symptoms you have described on the shower if the venturi in it has gone ,

 

[goofy gorilla]

It's the baxi duo tech combi 24 hea..