Diplomat Dishwasher ADP8132- cuts out 4 mins into any program?

Inherited this integrated dishwasher ADP8132 type 12043 it has an on/off button on the right and a program button with 5 choices. There is no digital display simply a light beside each of the 5 options. (soak,delicate,eco,strong,super)
The dishwasher cuts out after about 3 mins on any cycle, when you open the dishwasher three lights are illuminated. These are the first, third and last (ie soak.eco and super). Can anyone advise what this is?

Any help would be really appreciated,