Hi Gorka
Let's think about what the rollover cut out does?

The last thing it wants is the fuel pump to keep working?

So maybe if the rollover is not working ( or its thinking) you are down and won't reset then you could have NO volts going to the pump?
Location yes I know lol.

Post or send me your Wechat name so I can send pictures and talk to you about the location, you will never find it?