PO Error on Grand Golden Game Fruit (Scorpion 4)

[cavemanuk]

Hey guys,

hope someone can help. As the title says I have a Grand Golden Game fruit that when closed up shows "PO" on the 2 digit display. If the doors open, it works fine. I've reset the NVR and been through the manual that has no mention of "PO".

Anyone have any ideas?

Thanks