Vailliant EcoTec 637 losing pressure

[kelbriggs]

So we topped up yesterday (see above) and the pressure stayed at at steady 2.1/2/2 bar all evening. The heating then went off with the timer at 10pm. This morning there is no pressure in the system again. It only happens when the heating is off. If it is a leak would it lose pressure when the heating was on too?

Thankfully, Diamondgas is coming out to look at it tomorrow so we should know one way or another soon.

 

[happyflyer]

Worry no more Diamond Geezer is on is way, he will be back on this channel Monday night with the job fixed, I have no doubt, Diamond your are on your mettle. This is a 42 post and we got nowhere, the guessing is nearly over, BTW Diamond clean that Magfilter out whilst you are there, Kelly will never do it, our Doris does ours I have shown here, Diamond take the camera.

Here's mine at home, accessible

 

[happyflyer]

So we topped up yesterday (see above) and the pressure stayed at at steady 2.1/2/2 bar all evening. The heating then went off with the timer at 10pm. This morning there is no pressure in the system again. It only happens when the heating is off. If it is a leak would it lose pressure when the heating was on too?

Thankfully, Diamondgas is coming out to look at it tomorrow so we should know one way or another soon.

Kelly,

He will sort it for you now, good luck with it.

Tony

 

[diamondgas]

No pressure there then ... excuse the pun 🙂

 

[kelbriggs]

In the words of Diamondgas, it was a 'gooshed' heat exchanger all along! Hurrah to solving the mystery (and to no Trace and Access).

A big thank you to Diamondgas and to everyone who posted, particularly Happyflyer. I really, really appreciate your help.

 

[diamondgas]

In the words of Diamondgas, it was a 'gooshed' heat exchanger all along! Hurrah to solving the mystery (and to no Trace and Access).

A big thank you to Diamondgas and to everyone who posted, particularly Happyflyer. I really, really appreciate your help.

There was a constant drip coming from the condensate pipe and further investigations internally verified the source, Main heat engine 🙂 --- An expensive piece of kit to replace. Thankfully Vaillant are footing the bill I believe ... I'll let Kelly tell you that story if she so wishes 🙂

 

[happyflyer]

Diamond,

Your last guess was spot on, pity we have to go to all that trouble, had the condense pipe been visible we would have know earlier, suppose at least it won't freeze where it is.

Good Luck with it Kelly, it least you know what wrong now

Tony