Combi boiler shower going cold

Johnking · 13 Nov 2020

The flow rate through my shower is a bit low, resulting in the boiler cutting out from time to time. The shower doesn't have a restrictor, but I wondered about trying to find a high flow shower head. Do they exist, will it work?

(Boiler had diverter replaced, taps produce hot water fine, it's just the shower).

oilhead · 13 Nov 2020

Has it always been like that? Take off the shower head and see if it still stutters. Try descaling the head, otherwise. get a bigger head. The more holes, the more water will pass.

Johnking · 14 Nov 2020

I've modified the head by breaking of the little rubber nipples that create each individual jet. Much more water flows and it seems better, but the jets have no oomph. Guess I need something between what I had and what I broke.

gas112 · 14 Nov 2020

what boiler ?

CBW · 14 Nov 2020

Check the shower hose for a restriction/collapsed inside

terryplumb · 14 Nov 2020

Check the filters in the showers inlets.

Johnking · 14 Nov 2020

gas112 said:
what boiler ?

It's an old Vailant Turbomax.

Johnking · 14 Nov 2020

terryplumb said:
Check the filters in the showers inlets.

Do you mean remove the Grohe bar thermostat mixer and look at the H&C inlets? We do have very hard water.

Johnking · 14 Nov 2020

Chris_W said:
Check the shower hose for a restriction/collapsed inside

No, not that, and i removed the restrictor before I fitted it.

terryplumb · 14 Nov 2020

Johnking said:
Do you mean remove the Grohe bar thermostat mixer and look at the H&C inlets? We do have very hard water.

Yes ,that's how to do it. The filters are within the bar mixers inlet ports.

durhamplumber · 14 Nov 2020

Johnking said:
The flow rate through my shower is a bit low, resulting in the boiler cutting out from time to time. The shower doesn't have a restrictor, but I wondered about trying to find a high flow shower head. Do they exist, will it work?

(Boiler had diverter replaced, taps produce hot water fine, it's just the shower).

Take the shower head off..What is it like with hose alone?Sorry.been said

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Combi boiler shower going cold

durhamplumber

Similar threads