Hey Shillion, I had a very similar problem in the same model of Samsung dishwasher... no error codes or lights either. The problem turned out to be that someone before me had replaced the ECS thermistor with the wrong part.
Apparently there are two ECS thermistors out there for this series of dishwashers; one has three wires coming out of it, the other one has four wires (the dishwasher has 4 on itís harness). The wrong three-wire ECS caused an endless fill, drain, fill, drain loop in mine. The correct 4-wire ECS made everything normal again.
You were probably hoping for some help a few weeks ago, but I hope that helps now.