Range Rover

Just bought a 53 plate Range Rover on gas, been running great no lights on the dash and going onto gas no problem. Decided to give it a Boot after going onto gas and the ECU came flashing on the dash, when it flashes I have to change back to petrol and it stops flashing and runs good. Change it back onto gas and as long as the ECU on the dash does not flash every thing runs ok. My question is; is there a way to reset the ECU so it does not light up on the dash?

Dont boot it when going onto gas

mine does the same you shoulnt boot it on gas ,build speed up nicely ,cos it can cause blowback then u have big problems ...read the lpg manual .. kind regards manchester mozz

Thanks guys, I am learning quickly! Looks like I will have to go to a garage to reset the light on the dash.