Hi
I have just discovered this forum. Sorry that I don't speak Danish!!
I have a RTB16 that was installed in about 2018
I manage to look after my boiler well and thought that my Lambda sensor was dirty as I had a 0 Lx reading on the Photo sensor reading on the control panel which shut down the boiler. Having cleaned it I managed to get the boiler to run for about 15 minutes before it shut down again.
There is no part number on the Lambda sensor which makes buying a replacement difficult.
Can anybody help with a part number please
Thank you
Stephen