An operator presses and releases the start button. The motor runs only while the button is held. What is the most likely fault?

1. 1The stop button contacts are welded closed, or the overload contact is open and stuck
2. 2The overload contact has been wired in parallel with the contactor coil
3. 3The seal-in contact is open or not wired across the start button
4. 4The contactor power contacts are open on one phase of the motor supply