Boilermate A Class tripping and not sending power to Glowworm Boiler

Hi, my Boilermate A class is tripping each time my Glowworm boiler is powered up by the boilermate.
Scottish Power say its Boilermate and Gledhill say its Glowworm boiler.
Being going on for 10 days now with no heat.
Any ideas?

Easy to work out which is the problem

Disconnect boiler wire on BM A class.
Run BM A class
Check if telling the boiler to run.

Another was is
Put a temp supply on boiler which would be removing the A class.
Could be boiler or boilermate

It is not rocket science sounds like people can not be bothered these days.

Mike
MGC/H2O
Norfolk