Shower Water Pressure keeps going up and down. WHY!?

[jameslawrence1985]

Hi

Before i start, please forgive me for my ignorance.

When my shower is turned on, most times the water pressure drops to a trickle and is boiling hot. After about a minute or two, the pressure picks up again. And then after about 20 seconds, the pressure again drops to a boiling trickle.

The pressure gauge on my Baxi Neta-tec Combi 33 GA boiler, is in the green and has no error codes on the screen.
The shower is of a variety that has one temp leaver and an off/on leave with two pipes going into the main bit. Hope this helps.

Can anyone suggest what might be the problem and best course of action?

If you need anymore info, i'll do my best to answer.

You comments will be much appreciated.

Kind regards
James

 

[buck51]

Is it a new shower?

How old is it?

When did the problem start?

If its new then I think you have plumbed it wrong

 

[jameslawrence1985]

Hi. Yes shower is new from about oct last year when we moved in. Not sure who plumbed it in and we bought a refurbished home.
problem started a good few months ago but it now becoming more frequent.

Any other info, please ask.

thanks for your reply.

james

 

[buck51]

I dont consider last october as new, The answer should be no

Its like pulling teeth some times, trying to get relevant info.

when did the problem start?

Has it ever worked as it should?

 

[buck51]

It sound like its getting very little Or no cold water,

If you turn it to the cold position does the cold water flow ok?

 

[jameslawrence1985]

Alright buck! I'm looking for help not rude comments.

yes the shower worked fine up until a few months ago like I said in my previous post.

 

[buck51]

I am not being rude, I am stating FACTS.

And trying to help you.To get the facts right.

 

[jameslawrence1985]

When I turn the tempuature gauge to hot nothing comes out. Completely stops.

Didnt see your most recent post until I sent mine. Soz.

 

[jameslawrence1985]

So that sounds a bit odd then if you're saying that about the cold water. Could the temp gauge bet set up wrong?

 

[buck51]

and in the cold possitionyou get what?

 

[jameslawrence1985]

In cold position the water is warm for about 20ish seconds before it starts to slow down to a boiling trickle.

 

[buck51]

Then you are not getting any cold water through the shower, checkthe cold supplie to mixer

If its ok then the mixer is faulty.

 

[buck51]

It also need to be the same pressure, Do you have a cold water storage tank?

 

[jameslawrence1985]

No cold water storage tank. The supply seems to be inside the wall. This could be tricky. I may have to bite the bullet and call in the plumber.

 

[buck51]

Are you sure there are no valves anywhere that have been turned off. Maybe in the loft or under the bath