The intake/drain light will switch on on your dishwasher indicating problem connected to the water proof system. It means that there is a leakage in the dishwasher or it is not draining properly.
To fix it, check the water proof system and make sure it is activated. To test if it is activated, try to drain your dishwasher. If it drains, power off the machine for 10 seconds then turn it back on. Run one more cycle.
This should turn off the intake/drain light on your dishwasher.