HFS-3 Water Level Light on

[msp1609]

Hi

I recently bought a hfs-3 kit off of a local we installed it and it has been working great for 2 months. Just within the past week about 10 seconds after the gauge fully powers up the low water level light comes on, but the tank is full. This is what i've tried so far:

Disconnecting the float sensor: no change

Disconnecting the blue trunk harness : no change.

The green light still flickers on the board so it sees idc.

i tried putting the system into test but no flow bars light up and i don't hear the pump kick on.

I checked the fuse and relay and they both seem good.

The local i bought it from said he sent it to the UK to get programmed so it should be soldered correctly. Any help would be greatly appreciated.

Thanks