shoer is cold

[blondieb]

hi can any one help. my shower has started to run cold, even tho its fed by the combi boiler, all my rads heat up as normal with heating on, kitchen taps hot and cold work fine and hot water to bath and basin upstairs is fine too, shower is a mixer on wall bristan make, fed by combi in kitchen feroli domi compact, boiler is 2 year old and serviced shower heats up runs hot then gos ice cold , this happend 2 year ago and plumber said it was limescale in shower blocking the pipes etc so we had a new shower exactly the same make bristan it looks like a silver bar on wall on of at one end ad temp switch on other end riser rail and showwer head argh its driving me mad

[AlBags]

Hiya
Have you found a temp control on the boiler for the hot water?
Many have them. Run it high for the winter.
Have you a thermostatic device on the shower control? It will be a temp lever around the front of the main valve. Does it allow control of the temperature as normal .. or has it changed?
If it IS thermostatic .. there is a canister inside that can fail.
What shower make/ model/ rating in Kw?

[blondieb]

hi boiler is feroli domi compact and has been set to eco it enables hot water in system as soon as tap turns on, or u can turn of eco in summer and have comfort ie water only no heating, its been ok up till this week, when for no apparent reason shower started to go cold, if u run shower for approx ten mins it gets hot again, and so on, shower is bristan no idea what lake etc as only words bristan visible

[blondieb]

shower has a nob to turn with a button that if u press in and turn u can take temp high to 55 degress were temp before the press of button isusually at 30 to 35 degress ,

[AlBags]

Can you get a good steady hot flow from a hot tap without the 'gradually running cold' problem with the shower?
(This is beginning to sound like a shower thermostatic unit problem)
http://www.bristan.co...ce/techadvice/Showers

[blondieb]

yes had abath tnite water scalding hot out of tap, rinsed bath afta with shower and shower freezing then started to warm then cold again,

[blondieb]

ooh just had a look on website im sure its the one on a large picture utility showers, and im pretty sure i filled out a guarantee thingy , ill have a look tomorrow for it,

]

[blondieb]

Home page >> Showering >> Utility Showers

[blondieb]

thanks for all the help im of to look for the bristan guarantee thingy it may take a while i can remeber seeing it , hmmm

[AlBags]

OK ... will look back later or tomorrow .. Let me know how you get on.
Sounds like the shower thermostatic control 'might' be going up the duff.
Al x

[carrust]

Does blondieb speak Klingon? I couldn't understand a 'king word of what she was on about! lol

[AlBags]

She's alright .. I can tell .. : )

[ann_h]

I also have a ferroli, that does instant hot water - so my shower is basically a giant mixer tap...it does not have a thermostat, just a lever where you choose how much hot/cold.

Maybe the temp of the water coming from the boiler is hotter than the Bristan's stat, and the shower unit is trying to block it and going a bit wrong?

[AlBags]

Nice try Ann : )
In practice .. the thermostatic unit collapses internally, resulting in temp control problem .. often cold output.

[blondieb]

woo thanks for helo, seems to be the thermostat , so gotta find me guarantee as its probs still under the warranty time,
thanks

[AlBags]

Nice job ... no freezing bits now : )

A x

[blondieb]

cant find the guarantee, if the tehrmostas bust can it be fixed or could i buy a thermostaic shower from argos and just fix it to the same fittings etc they all seem to be the same distance apart

[AlBags]

Blimey .. girl ..!
You been looking for that guarantee for 10 days? : )

Yes .. It probably needs a replacement cartridge.
Can you find 'exactly' which model and rating/size on the web?

You need a local plumber or handyman to fit it. Pretty easy job.

Al.

[blondieb]

its just the basic straight chrome bar with a temp dial on the right and the on of dial on left with small grey button on temp dial to depress to go over the high temperature there was a pic on the bristan web site but mine has no model no any were on it just bristan in small lettters, were do i prise it apart to look at the inside workings is it when it gets unscrewed form the pipework that stick out on the wall were the hot and cold fill in
,

[blondieb]

and were would i get a cartridge from, somewere like b n q or plumbworld, or even bristan do they do spares

[blondieb]

can i replace my shower with another shower bar as long as the distance between pipes is the same 150 ml as this bristan is proving to be a bugger to get the cartridge out, bristan as a co are useless money grabbers