Thanks again, SJB060685.Motors will obviously be quite hot when running at steady state, could not tell you what sort of temperatures are normal though, lots of variables can effect that.
Running for 10-15 minutes though at a time suggests possibly a fuel issue. I think the temperature of the motor is irrelevant to your lockout problem now.
See if you can get a shorter video of flame failure and retry cycle, that would help.
To his credit, the engineer did visit again yesterday, 8:30pm! I was working, but my wife says he checked connections etc., and is himself quite
frustrated by this problem. He's still trying to contact particular people at Firebird and/or Riello. Btw, once in lockout, we get an on/off flashing red
from the control box ... 'Lockout for false flame or parasite flame signal'. This will only reset after several minutes of cooling down. Wondering if I should
buy a replacement capacitor (long-shot) just to see if it helps! I've checked btw that the old and new capacitors have exactly the same ratings: 4,5.