• Welcome to PlumbersForums.net (formerly UKPlumbersForums.co.uk). Please login with your usual username and password. Or register for free if you haven't already done so.

Discuss Bath Tap Temperature in the Plumbing Forum area at PlumbersForums.net

Leaky123

New Member
Messages
8
Reaction score
0
Hi All, I have an odd problem, we moved into our house about 5 years ago and have always had a problem where the bath tap runs from scorching hot to luke warm after it's been running for a minute, despite the heating being on all day, this process can be repeated after switching off for about a min. I think the whole heating system is the original one from about 30 years when the house was built. It's a conventional gas boiler (not combi) and for some reason we have a large combination hot water cylinder, despite it being a 4 bed house with loft (no separate cold water tank). The other taps, en-suite shower, around the house all seem to run hot water continuously with no problem. Any suggestions regarding the problem would be welcome, thanks.
 

Riley

S. Mod
Trusted
Plumber
GSR
Messages
10,622
Reaction score
3,449
Is your bath panel removable? I suspect that you have a thermostatic mixing valve under the bath which potentially is not working correctly or is set too low. This is a safety device installed avoid people scalding themself
 

Harvest Fields

S. Mod
Trusted
Plumber
GSR
Messages
9,346
Reaction score
2,043
What make and model of boiler do you have and what make and model of cylinder?
 
OP
L

Leaky123

New Member
Messages
8
Reaction score
0
Is your bath panel removable? I suspect that you have a thermostatic mixing valve under the bath which potentially is not working correctly or is set too low. This is a safety device installed avoid people scalding themself
Hi, I don't think that's the case because we had the bath and taps replaced about 2 years ago.
 

Riley

S. Mod
Trusted
Plumber
GSR
Messages
10,622
Reaction score
3,449
I don’t understand why if the installer was installing to regulations he should’ve installed one ??
 

Riley

S. Mod
Trusted
Plumber
GSR
Messages
10,622
Reaction score
3,449
Failing that do you have a thermostatic mixer on the bath? That could’ve failed
 

CBW1982

Plumber
GSR
Messages
1,125
Reaction score
215
I don’t understand why if the installer was installing to regulations he should’ve installed one ??
I don’t think he needs to as they usually only apply to new builds or a material of change, which from my interpretation is like a barn conversion etc.
 

Riley

S. Mod
Trusted
Plumber
GSR
Messages
10,622
Reaction score
3,449
Shouldn’t make it run like warm though. Are you actually going to check for a TmV or just assume there isn’t one
 

Riley

S. Mod
Trusted
Plumber
GSR
Messages
10,622
Reaction score
3,449
So I’d you don’t know what you’re looking for how can you say it’s not there. May need a pro
 

Forum Sponsors

Corgi - Plumbing Supplies for Professional Plumbers

Plumbase - Plumbing Parts for Plumbers

Underflor Heating Systems by uHeat

Wetroom Supplies by Wetroom Store

Nicobond - Wetroom and Tiling Supplies

Corgi - Plumbing Supplies for Professional Plumbers

Top Bottom