NVS-IPVD1B - It does not start up with 8~24V AC power supply - SOLUTION

If the NVS-IPVD1B is connected by 8~24V AC and doesn't start, follow the the instructions below:

(Be careful, use the adapter)

Remove the 4 screws and lift the backplate carefully.

Caution! Lift the two contact points with CAREFULNESS without breaking them.

Maximum 2 or 3 millimeters, no need to lift much.