Hot and cold connected the wrong way round on a 3 way shower valve

[dancypo]

Hi, I'm new to the forum, i really need some help, i had a GR-AZ-34C high quality BRASS body cartridge in-wall thermostatic concealed valve shower mixer faucet fitted and the plumber has attached the hot and cold backwards, so, i only get freezing or boiling water!!!
Is it possible to turn the thermostat cartridge round to avoid having to smash off the tiles and switch the pipoework?

Thanks very much, the plumber knows what has happened and is now bumping my calls, he was supposed to be round yesterday but didn't turn up

Thanks you

Dan

 

[Ch4 plumbing]

Do you have the Manufacturers instructions?
Is this the valve?

 

[dancypo]

Hi, thanks for the reply, yes that looks like it, i have the instructions the thermostat has guo ten written on it.

Thanks

Dan

 

[dancypo]

Hi and thanks for the reply, yes that looks like the valve, the thermostat has GUOREN written on it, i have the instructions but it doesn't mention the hot and cold connected the wrong way round or spinning the thermostat.

Thanks again

Dan

 

[solutions]

As far as I am aware there is no way of correcting the incorrectly piped hot and cold supply without switching the pipes over. Where do the pipes enter the wall from? Do they drop inside the wall from the ceiling/ loft above? Or perhaps enter the wall below a bath or below the shower tray?

 

[dancypo]

They run under a screed floor and up a concrete wall, i do however have a cupboard in the bathroom where the pipes enter the bathroom, i have a hot 22mm pipe there and a 15mm cold, could i switch the pipes there?

Thank you
Dan

 

[Chalked]

Cartridge inside only goes one way.

Looks like a swap round! Is it on a pump?

 

[dancypo]

no it runs off a combo boiler
thanks

Dan

 

[Chalked]

They run under a screed floor and up a concrete wall, i do however have a cupboard in the bathroom where the pipes enter the bathroom, i have a hot 22mm pipe there and a 15mm cold, could i switch the pipes there?

Thank you
Dan

probably not, as this will feed the basin too.

 

[dancypo]

could i not just switch the flexi hoses on the basin taps?

Thanks

Dan

 

[Ch4 plumbing]

If it's a screed floor then that's not too bad, break a bit of the floor up and switch there.

 

[dancypo]

The bath is on a mixer too and the same thing applies there too

Dan

 

[dancypo]

If it's a screed floor then that's not too bad, break a bit of the floor up and switch there.

unfortunately the spot where the pipes enter the room under the floor is right under a freestanding bath, i suppose i could whip the bath off and do it there, pain in the arse but it would solve the bath and shower in one go

Dan

 

[Ch4 plumbing]

Is the cold fed by the cold main and the hot water gravity fed? If so they could be the right way round but the cold main pressure could be forcing the hot back.

 

[dancypo]

Is the cold fed by the cold main and the hot water gravity fed? If so they could be the right way round but the cold main pressure could be forcing the hot back.

its all run from a combo boiler

Dan

 

[dancypo]

Is the cold fed by the cold main and the hot water gravity fed? If so they could be the right way round but the cold main pressure could be forcing the hot back.

Also, the water goes boiling when turned to cold and freezing when turned to hot

Dan

 

[dancypo]

Hi, no, its combo boiler fed, plus when switched to cold the water is boiling and when switched to hot its freezing

Dan

 

[Ch4 plumbing]

Is your w/c in the bathroom?
If not then I would go with altering the pipe work in the cupboard and switching the basin hot/cold around behind the pedestal, probably less work then taking the floor up.
Its really not upto you though if you have already paid someone to do it in the first place! Get the original plumber back to sort as the shower is useless at the moment!

 

[ne1ls0n]

Have you paid plumber fully?

 

[dancypo]

Paid for work completed but he was supposed to come back for a second fix, once i told him of the problem its all gone silent

Thanks for your help

Dan