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Chat Area => General Discussion Area => Topic started by: taitinson on 04 December 2012, 15:48:07

Title: Shower question for all you plumbers
Post by: taitinson on 04 December 2012, 15:48:07
Hopefully you wonderful people can give me some help, Our thermostatic mixer shower has started only running luke warm yet the taps are running red hot, does it mean the mixer has had it or can they be adjusted from factory settings, It all runs from a combi boiler if that helps
Title: Re: Shower question for all you plumbers
Post by: aaronjb on 04 December 2012, 15:52:35
Mine's doing that as well.. not a Triton by any chance, is it?
Title: Re: Shower question for all you plumbers
Post by: taitinson on 04 December 2012, 15:57:15
No, Just some cheapo from the bay, we had a new pump fitted to the boiler but as the taps are hot i guess it's nothing to do with that, was hoping i could override the factory settings
Title: Re: Shower question for all you plumbers
Post by: RobG on 04 December 2012, 16:51:11
Diverter valve sticking most likely.
Title: Re: Shower question for all you plumbers
Post by: OOMV6 on 04 December 2012, 16:59:55
A couple of possibilities.

If you live in a chalky area, then the calc may have buggered it.
Normally there is a grub screw adjuster which can be found inside the temperature tap cover. Do not confuse this with the grub screw that actually holds the tap in place. If you loosen that, you'll get very wet. Take off the temp tap cover, and have a look.

Another menthod of adjusting them, is to take off the temp tap cover, turn the inside of the tap a fraction more towards hot and pop the tap cover back on in the same location.

To remove the the cover, normally there is a small cover on the end, about the size of a penny. Pop this off, and you'll find a screw inside

If it has worked well in the past, and the rest of the house is normal, i'd be inclined to think it is fubar.

HTH
Title: Re: Shower question for all you plumbers
Post by: taitinson on 04 December 2012, 17:02:01
Diverter valve sticking most likely.
Cheers for the input guys, i will take it apart and fiddle :o
Title: Re: Shower question for all you plumbers
Post by: martin42 on 04 December 2012, 17:44:48
dont forget that with a combi boiler you need less flow for hot water especially in the colder weather,also try turning up the ater temperature on the boiler  :y
Title: Re: Shower question for all you plumbers
Post by: Lizzie_Zoom on 04 December 2012, 17:50:21
Hopefully you wonderful people can give me some help, Our thermostatic mixer shower has started only running luke warm yet the taps are running red hot, does it mean the mixer has had it or can they be adjusted from factory settings, It all runs from a combi boiler if that helps

Just a thought, but is your shower plumbed in at the start of the cold water flow, and with a pressure balanced hot feed?  Is the temperature changing when someone turns on a hot tap?

The water pressure of both cold and hot feeds must be balanced unless you have a power / electric shower, especially with the cold water into your property now dropping in temperature as the weather changes.

In other words, when was your shower plumbed in, and have you experienced these problems before? 
Title: Re: Shower question for all you plumbers
Post by: cam2502 on 04 December 2012, 18:15:23
Mine's doing that as well.. not a Triton by any chance, is it?


So is mine, and it is a Triton. Only getting hot water at the number 10 setting  :(
Title: Re: Shower question for all you plumbers
Post by: omega3000 on 04 December 2012, 18:20:01
dont forget that with a combi boiler you need less flow for hot water especially in the colder weather,also try turning up the water temperature on the boiler  :y

+ 1  :y
Title: Re: Shower question for all you plumbers
Post by: taitinson on 04 December 2012, 19:15:57
dont forget that with a combi boiler you need less flow for hot water especially in the colder weather,also try turning up the water temperature on the boiler  :y

+ 1  :y
It's on full, just strange that taps are hot and not shower, tried restricting flow on shower but still the same :-[
Title: Re: Shower question for all you plumbers
Post by: aaronjb on 05 December 2012, 10:00:50
Mine's doing that as well.. not a Triton by any chance, is it?


So is mine, and it is a Triton. Only getting hot water at the number 10 setting  :(

Mine just has a turny tap side for hot/cold - it's a thermostatic mixer (no pump/heater) off the combi.. I suspect the thermostatic block is shagged (very, very hard water where I live - kettles are furred up within a week) so I ordered a new one last night @ £80. Wish I'd kept the receipt from when I bought the shower, though, as the nice lady at Triton told me there's a 5 year warranty.. d'oh!
Title: Re: Shower question for all you plumbers
Post by: martin42 on 05 December 2012, 16:34:43
ring up triton and tell them whats happened and its still under warranty,ive called mira in the past with warranty problems and they were very helpfull,even when 1 shower had just packed up several days after it ran out :y
Title: Re: Shower question for all you plumbers
Post by: aaronjb on 08 December 2012, 10:56:25
Changed the thermostatic widget in mine today .. probably should have turned the water off first, however, as undoing it's retaining grubscrew and wiggling was an easy way of discovering that it's before the shower's 'tap', not after. Ahem.

Still, running downstairs to the boiler cupboard (directly below the bath) was a good way to discover that I really need to re-seal the bath as there was almost as much water pouring down into there as there was spraying merrily around the bathroom.


I really shouldn't be allowed to work unsupervised.... :-[ :-[ Not sure I want to tackle the brakes on the M3 on my own, today, now, just in case this is a sign of things to come!
Title: Re: Shower question for all you plumbers
Post by: YZ250 on 08 December 2012, 11:39:26
A couple of possibilities.

Another menthod of adjusting them, is to take off the temp tap cover, turn the inside of the tap a fraction more towards hot and pop the tap cover back on in the same location.

To remove the the cover, normally there is a small cover on the end, about the size of a penny. Pop this off, and you'll find a screw inside

If it has worked well in the past, and the rest of the house is normal, i'd be inclined to think it is fubar.

HTH

 :y That's how they tell you to do it in the manual as well. Done it on ours successfully in the past.


Mine just has a turny tap side for hot/cold - it's a thermostatic mixer (no pump/heater) off the combi.. I suspect the thermostatic block is shagged (very, very hard water where I live - kettles are furred up within a week) so I ordered a new one last night @ £80. Wish I'd kept the receipt from when I bought the shower, though, as the nice lady at Triton told me there's a 5 year warranty.. d'oh!

.... and my own experience of Triton is that they are very good at honouring it as well.  :y

5 year guarantee for thermostatic showers, 2 year guarantee for electric showers. They also stock parts for older showers for about five years according to the Triton guy that did the warranty work on ours.  :y

Oh, and don't forget to register the guarantee. It saves a lot of grief in the future.  :y
Title: Re: Shower question for all you plumbers
Post by: SIR Philbutt on 08 December 2012, 14:38:23
From what you say there is obviously a problem with the HW flow to just the shower as the taps etc seem to be ok

Start with the basics. Remove the mixer (turn off mains water first and drain down through ground floor taps) and check there is not any blockage in the filters which are inside the connections to the mixer.

Check the flow to the mixer. You can connect a washing machine hose straight  onto the mixer connections and let water flow through. if you don't have isolation valves on, have some one turn on the mains water (slightly not full on) whilst you direct the water somewhere safe. (bucket, drain)

As previously suggested flow rate of colder water through the boiler can reduce the temp of the outgoing hot but slowing down the flow at the mixer will correct this.

You can get a new mixer and connect up to see if resolves. If not then just get a refund. This is a good way of quick test   

BTW Having the pump replaced has no connection with HW as this is for flow round the CH

HTH
Phil
Title: Re: Shower question for all you plumbers
Post by: Andy H on 08 December 2012, 14:46:50
Probably a blocked filter in the shower hot water inlet.

If you live in a hard water area then you will have little bits of limescale floating about in the hot water pipes. Doesn't take much to block the filter but usually takes years to build up (also happens to the filters on the washing machine inlets).

Edit: must type faster......................
Title: Re: Shower question for all you plumbers
Post by: Kevin Wood on 08 December 2012, 18:58:56
Changed the thermostatic widget in mine today .. probably should have turned the water off first, however....

Got that job to do on ours. :y Might turn the water off, actually. :-\ Yep, probably best. ::)