Baxi solo 2 40pf burner keeps cutting out

[Anil777]

Hi all.

My parents baxi solo 2 boiler keeps cutting out. The fan runs and the pilot light lights up. Then the burner kicks in for 2-3 seconds then cuts out. Was working fine couple weeks ago but they came back from holiday yesterday and it never fired back up properly. The pump seems fine.
I dunno what it could be, I recently posted a problem regarding my boiler on this website and found a result. So I thought I'd try my luck again.
Could someone please help and thanks in advance.

 

[bazdaman]

RGI time im afraid not a diy fix.

 

[neiltheplumber]

Could be the fan Venturi, ntc, or gas valve. No point guessing though so get an engineer in and let him find the fault.

 

[AngelesPlumbing]

Check on the on flue might be blocking the airway or call gas safe engineer to check if combustion burning correctly.

 

[Anil777]

Thanks guys for the quick response. I called out and engineer today and he said could be the temp sensor so he checked it with his multi meter and he getting a reading from it so that's ok. He's ordered a new gas valve said its going to come tomorrow or on Monday . Though he didn't sound to sure himself if it was the gas valve causing the problem. I asked him about the fan &flue and he goes that's all clear. Gonna cost me over £200
Hopefully it works though

 

[Agile]

He sounds like a guesser to me!

Dont pay for parts which dont fix the problem!

Tony

 

[Anil777]

I just checked the temp sensor and I don't get a resistance reading from it. Is that right? Just doesnt show anything.
He tested it yersterdsy and said it was fine 😕

 

[Agile]

In this respect your RGI was correct.

Most boiler sensors are 10 k !

But the Solo is 1 Meg !

Measure again on the correct range.

Tony