I feel your Pain .....
We've had problems with our Baxi wood pellet boiler.
First a worn through power cable to the fan, kept blowing an internal fuse and tripping an RCD. Intermittent though, was a b****r to find, took me a week.
Now we are waiting for some bearings for an agitator in the hopper.

The current bearing set is stuffed and letting air through hence hopper not properly sealed hence drags hot air from fire chamber hence the dreaded burn back... Couldnt run it like that was burning back everyday.
I like the idea of a back boiler WBS to run all day, partly as backup........ hmmm, must look at that!
