Extraflame service manuals anywhere? Got 'Trapdoor Blocked ' error

[ivan_uk]

Just finished fitting an Extraflame Liliana Idro pellet stove (made in Italy). This was bought second hand and is quite old, but it's very similar to the much newer Extraflame stoves, and the mechanics and electrics are basically the same. I had to fix a few issues with it - water pressure sensor and ignitor failures, and it's running nicely now, but about twice a day it ends up with a fault 'Trapdoor blocked' - which is caused when the burn pot automatically empties into the ash pan. Despite the error, there actually doesn't seem to be any issue with the trapdoor which seems to open and close properly. If I shut down the stove and restart it, it works fine. The only thing I can think of is that either there is an iffy microswitch or a switch that needs some repositioning, or maybe there is play in the worm drive.....but I can't find evidence of either being the source of the problem. I bet someone has seen this problem before, as they are very popular stoves in Europe, but searches haven't revealed anything. I was hoping I could find a service manual online (for any extraflame stove), but can't find one anywhere. Anyone got any suggestions?