Recent content by NoNoNotDIY

Yep! New APS solved the problem. Now I have to put the cupboard back together; the previous DIYer built the cupboard such that the door frame had to come off to get the cover of the boiler off. Thanks again.

Cheers guys, you've all been a great help. I'll let you know as soon as I've replaced the APS, which is likely to be after the weekend.

Sorry, didn't mean to sound critical. I should be asking more specific questions. So, at the risk of askign dumb questions... What should be happening during a Pump Over Run? Should the pump be running? What causes a Pump Over Run? Where does this "residual heat" get dissipated to? Why is...

At that price I'm hoping the APS is going to fix the boiler, install itself and make its own tea. :) To kick off the debate, the boiler was installed in March '02. So the Vaillant part has an average lifespan of 4 years (okay, only one sample). Could a cheaper part be any worse? By the...

The "not particularly expensive" post put me in mind of a few quid, under a tenner. I just got quoted £49.64. Found one on the net for just under £30. Any advances? I don't mind paying this, if it works. I just wanted to check that it's what you pros would pay.

Chrishutt - thank you for your quick response and apologies for my terminology. I was working on the basis that any status where a boiler is not boiling, must be erroneous. :) Any more information on pump over run? Why is there residual heat, when the boiler has only just fired up? How long...

I have a Vaillant TURBOmax Plus. Both the HW and CH are intermittently cutting out with error S.33, check air/flue system. I powered it up and watched the air pressure switch signal, D.24, it was not changing state, i.e. D.24 = 0. I can hear the fan going and the fact that the problem is...