Valiant eco etc pro pressure problem

[Colin omara]

hi, I’m hoping someone can give some advice. My boiler keeps giving a error message of f75. I have replaced the expansion tank and it has been repressurised but what happens is the boiler will work then the red light comes on with error message the only way the boiler comes on is to send more water into the system which makes the pressure higher, the boiler will then work and it goes off again so the boiler ends up with the pressure being too high and I guess it discharges water out of the pressure release I fill it up again too high so the boiler works and round we go again. Anyone got any ideas? The tank is pressurized as I have done this a couple of times just to make sure! Thanks everyone

 

[Riley]

Firstly are you gas safe?? If not you should not be removing that cover as it forms a combustion seal protecting you and your family from anything nasty the boiler could throw out.
F75 is a common fault on these but you are going to need a gas safe engineer to remedy it

 

[king of pipes]

As above not a expensive fix but you will need a GSI to carry out the work at worst £300 . Kop

 

[Colin omara]

Hi, no I wouldn’t know what to do, but it cost me a small fortune replacing the tank the engineer said that would be fine which it was for a couple of days. I now keep filling up the system making the pressure too high to make it work and want ideas of what it is before a end up paying another few hundred on something that might not work so am after a list of possibilities so I can go to an engineer to get quotes, don’t want to be ripped off, any ideas would be great!

 

[Riley]

Just get three quotes mate. Or go with Vaillant fixed price repair. I’m afraid you won’t get any specifics here. Not being awkward just safe

 

[ShaunCorbs]

Very common issue and anyone who works with them will know the issue

Fixed price repair from vaillant

Or someone who works with them often

 

[rpm]

Don`t buy the parts or do any work yourself then if it still doesn`t work after a repair you call the man back.

 

[Harvest Fields]

As above.

 

[Colin omara]

Yeah no worries, I got two quotes last time and after paying out it still has exactly the same problem, thought there might have been a specific solution, thanks anyway

 

[Riley]

Well there is a specific solution as we say get someone Vaillant familiar

 

[Stu-B]

It’s a straightforward/common fix for a GS man.

 

[Colin omara]

Didn’t like the last guy so will start again with different engineer thanks

 

[Burger]

Didn’t like the last guy so will start again with different engineer thanks

Depending on where you are, Certain engineers specialise in particular boilers. I recommend as above Vaillant fixed price or engineer familiar with Vaillant boilers.

 

[rpm]

Depending on where you are, Certain engineers specialise in particular boilers. I recommend as above Vaillant fixed price or engineer familiar with Vaillant boilers.

Why does it depend where you live, don`t Vaillant cover everywhere?

 

[Riley]

Why does it depend where you live, don`t Vaillant cover everywhere?

I think what he means is if they don’t go Vaillant fixed price then certain areas of the country are popular for certain brands of boiler. I’m in a very Glow-worm area as an example

 

[rpm]

I think what he means is if they don’t go Vaillant fixed price then certain areas of the country are popular for certain brands of boiler. I’m in a very Glow-worm area as an example

Let him answer or is he your son? 😛

 

[Riley]

Well there’s a question

 

[rpm]

Well there’s a question

There are only 3 possible answers Riley. 😉

 

[Riley]

😵

 

[Burger]

Why does it depend where you live, don`t Vaillant cover everywhere?

What Riley said is a better way I could have worded it 😳

 

[Daljit68]

Hi

Try a diy forum - you might get more expansive answers, then be able to select the tradesman who chimes with advice you receive.

Or call the Valliant technical support line - I’ve always found them v helpful.

 

[Daljit68]

Have u ever tried getting 3 quotes from anyone? Honestly?? How many days would u have to take off work to catch 3 plumbers?