Petrol Generator to power my boiler?

[amckay]

Hello,

Trying to use a 2.8kva generator to power my home boiler in event of power cut. Generator will power the fridge, freezer, mobile phone charger but the boiler doesn't seem to work.

It will "Power On" but the error light flashes on the boiler to show error with fan / flume so won't commence the ignition sequence.

The moment the mains power is switched back on- the boiler springs back to life...

Any ideas?

If it has a 12v outlet then try hooking it up to an inverter then feed that to the boiler.
Not saying it will work in practice but in theory....