Our boiler pilot light went out today. Not sure when - the heating was working this morning, but wasn't by about 2pm when my wife got home and turned it back on.
I had some trouble getting it to stay lit - I kept the gas button pressed in for 30 seconds as per the instructions, but it didn't stay lit when I stopped pressing it. In the end I turned the boiler thermostat to something other than 'Off' (which the instructions said it should be on). When I released the gas button, the main burner fired up and it stayed lit. When the main burner turned off later, pilot was still lit. :)
Now - any idea what may have caused this? Problem with the boiler I would assume - the chance of the gas running out is low. Its an old Baxi wall mounted boiler.
When I'd got the boiler working again, I saw that the burner would pulse orange. It would be blue, then you'd hear a bit of a 'woosh' and it went bright orange (whole burner) and then went blue again. It kept doing this on a 5 second or so cycle. After its been on for a couple of hours, its burning continuous blue again. Oh, and when it went 'woosh' you could see a little puff of something come out the whole where the top thermocouple comes out - which worried me.
Therefore I've booked the boiler in for a service on the 3rd Nov - its the first time we'll have had it serviced since we moved here in May. Looks like its not been serviced in a while (though the pilot thermocouple looks quite clean and shiny!). We've had a little CO check thing next to the boiler, and it hasn't gone dark. Since noticing the puff of something, I moved the CO check thing to just above the thermocouple hole and I think its gone a little darker than it may have - but its certainly not "grey or black" as the thing says to check for.
So - any initial thoughts about the cause of the pilot light going out? Any problems you think I've got with my boiler? I certainly don't want to have to replace it!
I was already planning on getting it serviced - just made sure I did it now!
Thanks
D