Baxi combi 133he plus Combustion window

Hi This is my first post here,but i have read so much good information in the past.
My baxi has worked well for the last three years since we bought the house.
Yesterday someone turned on the hot tap and turned it off then on!
These boilers seem slow to respond,but this time it did a hot strike up and went with a big bang! i just happened to be next to it in the kitchen.
It would not fire up again, only the red led (flame failure) light came on.
I took off the main casing,Air box cover,and combustion door to find the
burner had lifted the top off.I replaced the burner and the door gaskets (all was very clean) put it back but ran the boiler up without the main casing on so i could observe the combustion window. it fired straight up and was much quieter but the burner seems to run a very orange colour.I was expecting a Bunsen burner blue not a very hot orange. any thoughts gentlemen?

Did you do a FGA? I thought not. Are you a RGI? Boilers are not for diyers.

Thank you for you prompt reply 45yearsagasman
No i do not own a Flue gas analyser,i am not a Corgi
but you could have answered the question? about combustion colour on these boilers do they run Orange more than Bunsen burner blue.
Many thanks.Martin

Yes they run orange! But please be careful when changing gas carrying components for yours and your families sake ;0)

Thank you for you answer gazthepottertonengineer.
Yes i completely agree with the need for extreme caution when dealing with my gas boiler. As i had only replaced the burner i could not see why this would change the gas flow? Many thanks. Martin.