Check the wiring is correctly installed. Seek advice from a suitably qualified electrician if in doubt.
Check the mains connection to the control box. Seek advice from a suitably qualified electrician if in doubt.
Check the fuses inside the control box. These are located alongside the timer blocks within their own hinged compartments. The fuses are all standard glass fuses; 10 Amp, 5 Amp, 2 Amp, 2 Amp from left to right.
Please be aware that every control box system is fully factory tested.