The power cable has three pins.

The black and red wires are phase wires.

The brown and yellow wires are earth wires.

(Please check out if the wires and sockets are phase or null by means of a phase tester).

 The earth well must be fastened to the earth wire. If there is not any earth well, the earth wire must be fastened to the earth.

Open the electrical control panel box, and check out if the miniature circuit breakers are on.

Turn on the timer and the thermostat as mentioned above.

Note: the middle power switch is for the timer.