Potterton suprima 60l heap

[Riley]

Evening chaps wonder if you can help me

Was called out tonight to look at one of these boilers. Boiler would not light.

Traced to a goosed aps. Happen to have one on the van for a job tomorrow so replaced it.

Now boiler will only light with the cover off. I am leaning towards fan also being goosed but wondered if any of you had any experience of this model.

All suggestions appreciated as ever.

Matt

 

[bigads28]

It's certainly possible, you could try oiling the fan to see if that helps and give the blades a brush off. Connecting a digital gauge to the venturi will tell the pressure the fan is putting out. If it's close to what the APS operates at then you have found the problem. Is there a flue restrictor fitted, taking that out will fix it for a while.

If you need to order the fan make sure you order the gasket where it connects to the flue as it will be knackered.

 

[Millsy 82]

Blockage in the flue? Damaged flue?

 

[Atouchofgas]

Split in aps tubes at venturi, had that one before

 

[villa_tom]

What pressure is the fan kicking out??

it might not be giving out enough to activate the air pressure switch.

 

[Riley]

Thank you all for your answers really really helpful

I will go back armed with a fan as I'm pretty sure that's the issue

 

[Billy Bob Bob]

does the suprima use the same flue as the prima they rot at the end

 

[dave1]

I've had quite a few suprima flue rot, sometimes hard to spot shine a torch down the flue terminal if you can.

 

[Riley]

It's a vertical so very difficult. Will try

 

[dave1]

Not seen one with a vertical flue, are you sure the flue hasn't come apart can you see the whole flue length?

 

[wattsie1987]

Hoses or venturi my moneys on.

 

[dmheat]

Could be anything mentioned above. Flue,fan,Venturi,pressure tubes or even blocked flue ways on the heat ex

 

[gasmanrob]

Fan cups are filled with dust and the turret seal is either split/missing/out of position it's a common issue with them new turret seal clean the fan cups replace and all should be well.

if not remove the lug that seals the stat cables through the case and measure your O2 from there that'll tell you if you are re circing POC