Valiant Boiler. Water is hot then cold. Intermitent. Heating ok.

[masterdineen]

Hello everyone.

I have a valiant bolier. The heating is fine.

But when showering or any taps are used. Hot water comes through but then goes back

down to cold. Then goes back up and back to cold again.

What could this be.

Many thanks

Rob

 

[RoryD]

Model of boiler?

 

[masterdineen]

eco TEC plus 937

 

[aggis]

could be thermista or blocked plate heat exch, or various things. Get a Gas safety repair engineer

 

[masterdineen]

what is the best way to diagnose myself. what should i check first?

 

[Steve @ TheHeatingHub]

It's illegal to work on it mate. as others have said get a GSR out 🙂

 

[masterdineen]

o ok then, fair enough.

Thank you everyone for your advice and information.

 

[masterdineen]

could someone tell me what dhw heating exchanger i would need for my valiant eco tech 937

i search for heat exchanger for valiants, and i get all sorts

 

[armourer]

could someone tell me what dhw heating exchanger i would need for my valiant eco tech 937

i search for heat exchanger for valiants, and i get all sorts

Your not really listening are you mate?

 

[hydrotherm]

The 937 is a storage combi, you could spend a lot more money trying to fix it yourself than if you called in an expert

 

[bob the plumber]

lol persistance

 

[masterdineen]

Armourer. You didn't read the question did you. I asked what was the specific part was. I want to source the part instead of being charged over the top. There are so many dodgy B-a-s-t-a-r-d-s. I've already been told i cant do it myself.

 

[nick/matt1]

you will save yourself a lot of heartache if you get a valiant qualified engineer in ... it will save you time and money in the long term...

 

[nick/matt1]

part no can be obtained direct from the manufacturer if you quote model and serial number

 

[mikimac]

Armourer. You didn't read the question did you. I asked what was the specific part was. I want to source the part instead of being charged over the top. There are so many dodgy B-a-s-t-a-r-d-s. I've already been told i cant do it myself.

You might well end up with a new ornament for the mantelpiece by ordering before it's been properly diagnosed. The advice given is possibilities - that's it. Get a GSR engineer in who will check the boiler. They will then diagnose & tell you what & if a part needs replacing.

 

[capitanpugwash]

You might just find that no part is needed as it can be cleaned by a GSR engineer and end up saving you money. Cheers

 

[masterdineen]

all done i sorted it. thank you everyone for you help. nice one

 

[nick/matt1]

and you did what?

 

[masterdineen]

well. I took it off the wall. Then took piece by piece off at a time. Cleaned each part with a tooth brush.

then rebuilt it. Plumbed it backup. Now my water is red hot. :gunsmilie: Bobs your uncle.

 

[mikimac]

well. I took it off the wall. Then took piece by piece off at a time. Cleaned each part with a tooth brush.

then rebuilt it. Plumbed it backup. Now my water is red hot. :gunsmilie: Bobs your uncle.[/QUOTE

Well, my Sunday's now complete :smug2:

 

[masterdineen]

lol, glad you saw the funny side. British gas changed the Heat exchanger and put a filter in. After 3 services from british gas. None of the engineers recommended a filter. How crazy it that. Now they want to charge us £225 for the heat exchanger. GOOD ONE