Smart Sinks Trouble Shooting - Control Box Removal 

You have checked Power Box with no problems - next check control box due to NO RED LIGHT
1. Remove switch - chrome round end & black lead
2. Remove pump - flat plug black and red lead (2 wires)
3. Remove Loom - flat plug (3wires)
4. Lift control box out.
Return faulty part to Pro Plaster Head Office for checking and/or replacing.