Just give me a straight answer...

[secret squirrel]

I expect customers not to be able to give me a straight answer but someone your working with!

My mate whose gas safe reg needed a hand this afternoon done a couple of jobs with him,

The last was changing a PCB on an old baxi, trouble firing, changed led and electrode but still struggling, cleaned gas inlet near electrode still problematic. PCB changed job done.

Customer insists flame was bluer before we repaired it (?), hoovered out etc.

Fan was making an awful racket and was turning but not (IMO) that well. Out of customers ear shot I asked whether the PCB was now at 100% whether changing the fan would help.

Maybe was the answer I got.

Ok, how do we test for that,

The fans working,

Ok, what else can it be.

could be anything.

Now, getting a little aggravated but wanting an answer,

'other than the obvious of getting rid of gases does the fan have any other purpose?' Not really.

My answer to that was

''thanks for the advice, most helpful you tedious tw@@''

I got him to drop me off back at my van, after all I'd done my work for the day.....

Anyway, if someone can answer the question for me.....

What if anything does the fan do other than get rid of unwanted gases?

Because the flame is not 100% blue and the combustion chamber has been cleaned what would now be the likely culprit,

is this normal on a boiler after replacing a major component it shows up other components?

 

[CES]

The fan "pushes" exhaust gases out and "pulls" fresh air in (on a negative pressure room sealed boiler). The reason you get a different flame after "cleaning" is due to disturbed particles within the chamber, the same reason that the CO/CO2 ratio is usually a lot higher. It will settle down eventually.

 

[CES]

no it doesnt.. it pulls the gases out of the chamber... doh!

 

[tamz]

If you have cleaned the burner, unless you took it out and washed it the flame picture will show bits of yellow and orange. This is normal and it will settle down in an hour or so.

 

[secret squirrel]

Thank you both very much.

I work with 2 gas safe chaps (1 now) the one I will not be working with is 26 and I'm 44, I have not got an issue at all with being told what to do by him or learning from him, I do like to ask questions. Having said that sometimes there is no answer it just is, I accept this. I think the he (gas safe chap) has the attitude:

'If I tell you what you need to know, you'll need me less''

Foolish attitude really, I have pushed a lot of work his way, my recommendations from my customer, he does the work, I'm happy to tag along and work for peanuts, (pay peanuts get monkeys)

The other chap, I'll ask him questions and if he is unsure, he'll say 'I need to look that up' or if we're busy 'ask me again later' Much better attitude.

Still no accounting for youth, thanks again chaps