Tony
I replaced the main PCB
I did not change the spark/sense board or the electrode as I would have thought a fault with either of these would cause a lockout.
To be honest I have just found out that Vokera are offering a repair service for £169 inclucing call out, parts & labour.
I will ring them Monday.......
I will post the results of their visit when I have them.
Cheers
Dennis
Dennis - did you ever get to the bottom of this ? we have the exact same issue on our Vokera compact.