Has your postman ever had to shout through your letterbox because your doorbell is broken? Or have you missed important deliveries because you didn’t know they were there ringing the doorbell for you to answer!? This common inconvenience is relatively easy to fix if you have the time.
Doorbell circuits are not powered by 220-volt grid voltage, but by a lower voltage so that the doorbell button is not dangerous to us. The voltage is kept low by a small 220/12 volt transformer. This transformer is usually plugged into the electrical panel at home and can be disconnected from the grid with a switch.
The main reasons that doorbells may malfunction are:
- Degradation or failure of the external button
- Ring failure
- Transformer failure
- Accidental interruption or deterioration of the system
If you are experiencing an issue with your doorbell then each of these elements must be checked to identify where the problem lies so that you can solve it.