Ferroli Modena 102

[combo]

You man the flue fan ?? Not pulling enough air in ??

 

[combo]

or atleast not pushing the gases out so the atmosphere can push the new stuff in...

 

[kris]

I know its a nightmare and a check is a check but the check then becomes a diagnosis when the readings go off the chart, im telling you combo its because its a ferroli, (buckets), diamond said earlier its a bad joint and it prob will be it just wont be accessible,

 

[stevetheplumber]

baxi solos are bad for high co readings from start up they need at least ten minutes to clear

 

[IDCHAPPY]

Initial lighting can give you wayward CO readings on many boilers in my experience. As long as it settles to within the requirements I wouldn't be too fussed personally 🙂

The fact that you're reading minute amounts of co in the air intake could indicate a poor joint and stray POC's as you say. On older boilers the flue connections weren't necessarily as hermetically sealed as modern condensing boilers need to be 🙂

This^ Have you checked the terminal and as much of the flue as possible? was the burner pressure ok?
I've seen the BP being too high and the flames licking the bottom on the HE giving crazy reading before.

 

[Ermintrude]

You checked that the div has fitted correct flue restrictor? If it was a DIY might have shoved wrong one in.

Also check silicone tube back to gas vale is clean and clear of shister.

 

[combo]

I couldn't download the manual on my phone and there was no reference to it on the data label,I relied on the gas rate, which I did a good three times......Im thinking this may be my mistake.

 

[bewsh]

What are the insulation pads like? They often have really bad cracks which the flame impinges on, resulting in high CO readings.