Vaillant EcoTEC Boiler Issue

[jtsplumbing]

Cheep pump ! not doing what its ment to.

 

[Harvest Fields]

The pump is definitely spinning

Does it stop easly with a screw driver inside the cap?

 

[BbrrrrrrItsCold]

I haven't tried to stop it, but will give it a poke next time I'm there.

Forgive my ignorance, but what would that show?

 

[Harvest Fields]

If it is circulating properly or it is worn out

 

[BbrrrrrrItsCold]

Ah, I see what you mean now. So if it stops easily, then the pump is worn and therefore not circulating the water correctly?

The pump is less than 18 months old, so I would hope it is still going strong, but I suppose you can't be sure!

 

[dan_the_plumber]

Is your cylinder downstairs with the boiker upstairs? If not it seams to be plumbed in upside down.
Also are there manual air vents in the airing cupboard? If so open them to get the air out. Also bleed all rads.
Tip: sometimes running system in heating only then hot water only whilst venting can help to chase air out

 

[jtsplumbing]

Is your cylinder downstairs with the boiker upstairs? If not it seams to be plumbed in upside down.
Also are there manual air vents in the airing cupboard? If so open them to get the air out. Also bleed all rads.
Tip: sometimes running system in heating only then hot water only whilst venting can help to chase air out

Says its his Mothering laws place bet its a bung-a-low with pipe work running in loft !! Still think its the cheep pump that's been fitted or an air lock in loft, Proberly AAVs in loft.

 

[BbrrrrrrItsCold]

Thanks for your replies, everyone.

The boiler is in the cupboard with the water tank below (the tank can be seen to the right of the pipework in the photos).
Dan, what do you mean when you say it looks as if it’s been plumbed in upside-down?
There is a vent valve above the boiler, which had a very small amount of air in, and there is a valve attached to some pipes in the loft which had air in. I bled these but it has made little difference.

What is an AAV?