Hello,
The definition for "Over flow DSIT" is "Over flow in Dampening Solution Intermediate Tank" and is level sensor inside intermediate tank which is generating this error. Open the lid of intermediate tank, remove filter mat basket and check the water level. If it is too high, then the level sensor will be activated and stops the circulating pump accordingly. In this case, you need to turn the mechanical floating ball in a direction where stands higher on water surface. There is bolt which is tightening the ball, loose it first and tight it once it is adjusted. There is flap inside pump foot which adjust the return flow. The water should be 10 to 20mm higher than the pump foot while the pump is running. If the level is not high, then you need to check the sensor. Directly under electric plug, there is a level sensor with a floating part. Check if floating part is moving upward and downward freely. If it moves freely, the it could be defective. You can make a bridge on the sensor wires and run the unit until you get the new part. But be careful, the water level in intermediate tank should be checked before the production, otherwise it will over flow and you will have water everywhere on the floor.
Good luck
