Vailant ecotec pro 28 pressure

[Johns23]

Hello.

I’ve lived in the property for 4 years and anytime the pressure got low (0.8 bar) I would use the fill taps to release more water into the system. Ever since British Gas did their annual boiler check about 3 months ago, I’ve had to do this too up method more and more. My pressure is now 1.8 bar which is too high but seems to lose pressure and need topping up every other day. I can’t see any leaks and the pressure reading isn’t changing so any ideas why I’m losing my hot water and heating until I let some more water into the system and then it fires straight back up?

 

[Scott_D]

If you have British Gas cover you may need to use it and call them out

 

[Johns23]

If you have British Gas cover you may need to use it and call them out

Thanks for the reply. We don’t have that but considering using their repair and cover service.

 

[Scott_D]

Check all radiators and visible pipes including the small copper pipe that goes to outside form your boiler

 

[Johns23]

Check all radiators and visible pipes including the small copper pipe that goes to outside form your boiler

For leaks? I can’t see anything wrong with any of them.

 

[cjg]

run your heating for an hour then check what the pressure gone to.

 

[Johns23]

run your heating for an hour then check what the pressure gone to.

It actually went up to 2.0 now it has the f.75 code again and all off. I’m not going to fill the loop again and call out BG I think.

 

[ShaunCorbs]

Tbh better off calling a local gas safe engy out repair I think would be around £40 plus vat etc

 

[cjg]

its the pump or your flow senser thats playing up. with the sound of things.

 

[Johns23]

its the pump or your flow senser thats playing up. with the sound of things.

Thank you. British Gas are coming to look at it tomorrow so hopefully will be easy to sort.

 

[Deleted member 120897]

Thank you. British Gas are coming to look at it tomorrow so hopefully will be easy to sort.

BG - Don’t count on it. I hope you get it sorted, but would have gone local independent familiar with this boiler.

 

[Johns23]

So BG came round today and said 2.9 bar is ok!??!! I called back afterwards as that’s not what it says anywhere else and they are sending someone else tomorrow.

I drained the radiators and the reading was stuck at 1.7 bar so turned on the boiler without refilling as didn’t want to add more pressure. It made a lot of strange noises and smelled a bit funny but not of gas. I then checked the dial and it had zero pressure at all. I quickly filled it with some water from the full loop and it’s working again but worried I’ve done damage.

 

[ShaunCorbs]

standard bg least they turned up I wouldn’t go off the digi guage go off a mechanical one

As the digi pressure sensor is fecked / blocked

 

[Johns23]

Thanks, definitely a lesson learnt. Is it possible I’ve done damage starting it up with low pressure/hardly any water as believed it was at 1.7 bar? It made a real racket as though trying to flush water through and had a funny smell, not burning or gas though. I then filled with water but still not enough so made the same noise then I ended up filling up and seems ok now but worried it could have caused damage?

I’ve just turned it off now until BG come tomorrow.

 

[ShaunCorbs]

Short term you are fine long term eg overheating sounds like an aircraft going over thumping and banging etc it would cause damage

 

[Johns23]

Short term you are fine long term eg overheating sounds like an aircraft going over thumping and banging etc it would cause damage

Thanks. So as long as I don’t do it again I should be fine

 

[ShaunCorbs]

Yep

 

[king of pipes]

Your expansion vessel inside the boiler needs checking for its correct pressure this needs to be done with the boiler drained it should be between 0.7 to 1 bar any reputable engineer can fix this if it's found to be ruptured it may need replacing and possibly a couple of smaller parts . Kop

 

[Johns23]

Your expansion vessel inside the boiler needs checking for its correct pressure this needs to be done with the boiler drained it should be between 0.7 to 1 bar any reputable engineer can fix this if it's found to be ruptured it may need replacing and possibly a couple of smaller parts . Kop

 

[Johns23]

Thanks for the reply, I will mention it to them tomorrow (they cancelled the appt). I have a feeling that it will be a repeat of the first appt whereby they will turn up, say there’s nothing they can see wrong from a quick visual inspection and leave

Any tips on what I could say to make them stay and fix the actual issue?

 

[ShaunCorbs]

Ask for a senior repair engineer as the fault is still there

Also there in breach of contract as they haven’t repaired the boiler so you would like a refund on the repair and maintenance contract I’m guessing you went for this type

 

[Johns23]

Ask for a senior repair engineer as the fault is still there

Also there in breach of contract as they haven’t repaired the boiler so you would like a refund on the repair and maintenance contract I’m guessing you went for this type

Ok thank you

 

[king of pipes]

BG are not the company they once were I went to a install yesterday they fitted only just over a year ago looked rushed and lacked the finishing touches , the benchmark was unreadable and obviously completed in the van the first service should have been free but they could not service the boiler for the next six months apparently?? Another one I have on my books now . Kop

 

[Johns23]

So BG checked the expansion vessel today and it was totally flat so recharged it and no water was coming out so was convinced it didn’t need replacing. The pressure looks like it’s starting to drop already though but hard to tell as apparently my pressure sensor needs replacing too which they should be doing on weds. What would cause the expansion vessel to do that if not damaged? If it is still dropping pressure, what next? Thanks again.

 

[king of pipes]

Replace the expansion vessel and I'd do the pressure relief valve aswell, give it a proper service not just a safety check take the burner out completely clean inside the heat exchanger clean the electrodes and flush through I've had a failed heat exchanger you will know if it absolutely filthy in there, the flow sensor is a common problem especially on systems without a magnetic filter or badly maintained without a inhibitor they clog up with system debris so if your systems dirty ? then it's likely to happen again . Kop

 

[cjg]

ya but king of pipes, its british gas !!!!!!!! lol.

 

[Johns23]

Replace the expansion vessel and I'd do the pressure relief valve aswell, give it a proper service not just a safety check take the burner out completely clean inside the heat exchanger clean the electrodes and flush through I've had a failed heat exchanger you will know if it absolutely filthy in there, the flow sensor is a common problem especially on systems without a magnetic filter or badly maintained without a inhibitor they clog up with system debris so if your systems dirty ? then it's likely to happen again . Kop

Thank you very much for the detailed reply. I will suggest all of this on weds, probably to a very surprised face

 

[king of pipes]

ya but king of pipes, its british gas !!!!!!!! lol.

I know mate but I'm sick of people getting ripped off they do the bare minimum possible in my book prevention is better and cheaper than cure, service a boiler properly keep the water clean you won't go far wrong I've got over 80+ boilers and very rarely do I get a issue .

 

[ShaunCorbs]

Tbh they should have all these parts on the van

Shrader valve needs changing
Vaillant pressure sensor
Prv

As there common stock items

 

[king of pipes]

Thank you very much for the detailed reply. I will suggest all of this on weds, probably to a very surprised face

Yeh mate he'll choke on his tea

 

[EvilDrPorkChop]

It's alright, all these s*** BG engineers are keeping me in business

 

[Johns23]

Hello. So a quick update…

Had the expansion vessel recharged and now seems ok. PRV ok. Pressure sensor replaced as faulty. Still loses pressure mostly when not in use. If I leave the house for any period it drops more. Have Dynarod coming out at some point next to see if they can detect a leak as British Gas are at a loss.

Thanks again for all the advice.

 

[ShaunCorbs]

Would want the prv changing as they can not seal once opened

 

[EvilDrPorkChop]

Wouldn't be unheard of for the HEX to leak back (Pin ***** inside) and back down the condensate drain, had a couple of Vaillants do this. Although it's quite rare.

 

[king of pipes]

Get em to take the burner out the heat exchanger it will be a mess in there if there's a leak internally in there .