What to check
The PinNet controller PCB has a Red LED located in the top right corner, and a power source from either the power
module (18v DC) or an external power unit 12v DC.
Correction Action
Replace the PinNet controller
or power supply.
The externally mounted header
chip contains all the data for the system. It can be transferred to a new PinNet without the need for
re-programming.
Links
https://www.entryphone.co.uk/pdf/PinNetManualV5.pdf