Redring Electric Shower - Water coming from main unit

[StephenD]

Hi all

Would be grateful for any help you can give:

Model: Redring Selectronic Premier - 2016 model
Problem: Water spewing from the bottom of the main unit instead of coming out through the hose.

I initially thought this was due to the PRV having activated but upon further investigation I can't see any obvious place for a PRV on this model. I have included some pictures below - the water is exiting the spout (see first picture, located just above the earth wire - and falling into the reservoir below but there seems to be so much that its backing up and just spewing out the sides of the main shower unit.

Can anyone help with what is causing this, and is it possible to solve with a replacement part? From what I can gather this is the correct manual:

08_100191_0 Selectronic Handbook 2019 Rev 02 page by page.cdr (redring.co.uk)

Thanks,
Stephen

 

[Aquarius]

It appears not to be listed in the manual, but would seem that it’s just at the base of tank. Redring Prv Housing Complete (Selectronic) - 93594115 | REDR-93594115 - https://www.showerdoc.com/redring-prv-housing-complete-selectronic-93594115 Maybe just contact them to make sure 100%.

 

[Ben-gee]

Your initial thoughts were right.
The prv is at the base of the tank on the left, just above the earth cable.
Isolate the unit water and electric, remove the prv and inspect. If it has activated then order a new one.

Don’t know that particular one but often they work by forcing out a small plastic/silicone ball - this can often be pushed back through the orifice to give you a working shower until the new one arrives.

HOWEVER: most important thing is attend to the reason that over pressure occurred, or your new prv will just operate almost immediately. ( your temporary reset won’t work either)
The most common reasons are blocked/limescale head, or kinked/herniated hose.

 

[Shower Engineer]

The PRV is circled below in red:

The PRV can be removed by using long nosed pliers on the hexagonal sides of the PRV, it is a tight fit but will come out without having to do any damage.
If you can find the small black rubber ball then it can be pushed back into the PRV and then the PRV can be refitted. If you can't find it then you need to order a replacement.
As above check the hose and handspray, that is most likely what caused the problem.
When you test the shower do not just press the start/stop button! This will cause the elements to come on without water in the heater can and may cause them to fail. Instead press and hold the cooler button for around 5 seconds and that will allow cold water to flow. Once the water is flowing stop the water by pressing start/stop and then start the shower normally.
Hope this helps.