Cold showers................

[Alison556]

I have a Mira Excel EV shower. It is barely warm I've got it cranked up as hot as it will go and it's not doing anything to get hot water through.

If you feel the valve at the wall on the hot side, it's barely warm. I've no idea if checking at the boiler would give me an answer, but if I run the hot tap in the kitchen, one of the pipes gets really hot. If I run the hot tap in the bathroom, that same pipe gets really hot. If I run the shower - none of the pipes get hot.

Can anyone throw some possible causes my way please?

 

[terryplumb]

Do you have a combi boiler supplying your hot water to taps and shower ?
If so ,your shower may not be allowing sufficient flow to fire up the boiler.

 

[Alison556]

Yeah, it's a combi boiler. It's worked for years, it's only the last week I've had cold showers. I'll go and turn the shower on again though and check if the boiler is firing.

 

[Alison556]

Boiler is definitely firing up, but the water is only mildly warm. Thermostat on the boiler for water is up full as well.

 

[terryplumb]

Sounds like your thermostatic mixer valve isn't blending properly ,how old is it ?

 

[Alison556]

Err it's about 13 years old

Would that explain why none of the pipework is getting hot though?

 

[terryplumb]

You would need to remove the shower from the wall ,to confirm the hot water pipe is flowing unrestricted, check the shower valves filter for cleanliness. If all good the issue is within the valve.

 

[CBW]

What boiler is it?

 

[Stivino]

Is the water at the hot taps getting hot?

 

[Alison556]

What boiler is it?

It's a Worcester Green Star 28i

 

[Alison556]

Is the water at the hot taps getting hot?

Yeah, water at the taps is hot but not at the shower

 

[HERTS P&D]

Post a picture of the shower.

Andy

 

[Alison556]

 

[HERTS P&D]

You are looking at £160 for a new cartridge plus fitting.

Andy

 

[Alison556]

You are looking at £160 for a new cartridge plus fitting.

Andy

Yeah, I'd had a look and wasn't sure if replacing the cartridge was better than just replacing the shower. For reasons unknown to me, I disconnected the shower hose and then turned the shower on and let it run - and the water was roasting. Is it even possible that a hose could have caused the problem?