Filler Fillstar DX stops unexpectedly with fatal error code "FILVALV12" after a short period. Restarting leads to same error.
At least one or more Septic Valve(s) is/are loose. To resolve the issue, make sure all valves are tightened. Check in numerical order from left to right. If all screws are tightened, and machine is still not operating make sure the hosepipes are not leaking and releasing any pressure. This will lead to malfunction and introduce more damage.