hi, i hope someone can offer some experience with powering a worcester boiler from an inverter. i have run a radiant combi off a 1200w msw inverter with no problem but my 28cdi goes into burner lockout ch demand light slow flash with a (1000w) msw inverter. and it wont work again until it's back on mains and reset. i believe there may be more sophisticated electronics in the 28cdi which need the earth. is this the case and is it possible to provide this correctly when using the inverter? thanks for any insight you can provide!