The fuse at the helm kept blowing, we put in a 10 instead of the seven and a half and it’s ok. But, the standby doesn’t work. Cleaned out some crap, lifted the switch and it worked. Might have to replace switch and/or pump to?
Putting in a bigger capacity fuse is usually a bad idea. I can't say for certain without knowing the make and model of the pump and maybe the gauge of wire that it uses. Nevertheless, the automatic bilge feature is not powered from the helm. If there is a switch for the bilge at the helm, it is for manual operation and is also connected to the accessory bus which is only powered when the battery switch is on.
The automatic feature on the other hand is powered directly from the battery ( or the line side of the battery switch) and by regulations has an inline fuse or breaker located pretty close to the batteries.
I am not sure what you mean by 'standby', the modes of operation are Automatic using a float switch) or manual commanded at the helm by a switch.
Note that if the bilge pump motor is stalled and can't turn, the fuse can blow or the motor can burn out. The pump could be bad or could be clogged.
The float switch could be bad and if I understand what you said, the pump ran when you lifted the float, then the float switch is working ( it still could be getting stuck), the fuse and wiring are working and the pump is probably OK.