Hi

Few years ago I bought a 2kW petrol generator to keep the home running
when the mains power failed. Used several times, no probs except that
the CH boiler locked out when the generator was switched in. A reset and
all worked fine.

Last week had another power cut but this time the CH boiler locked out
after about 30 secs even after re-setting (several times). Everything
else in the house works OK, including gas fired Rayburn cooker, which is
just the same sort of technology as the boiler.

Any thoughts on what is upsetting the boiler? -it's a normal wall
mounted balanced flue unit from Vaillant.

Thanks
--
Richard