Check the wires for the emergency stop button.

For the one in controller, wire numbers are 225 and 25A. (attached picture 1)

For the one in front pannel of the pump, wire numbers are 0000 and 25A.(attached picture 2)

Make sure all the wires are not loose.

After these work, if the problem is not fixed, please short circuit "225 and 25A" to see if the white light is still on. Do the same test on "0000 and 225" (attached picture 3 and 4).

If the problem solved temporarily, clean the dust and check the contact block for solution.