It is only necessary in exceptional cases to reset the transformer. To reset the HUB-50/100, it must be switched off completely. If this does not solve the problem, remove the plug from the outlet and plug it in again after around 10 seconds. This type of transformer does not have a separate reset button. You reset the SMART HUB-150 by holding in the button on the right side (for at least 15 seconds) until the button starts flashing blue.