Technical support

Fault Finding Guide

Work through a few focused questions to identify the likely cause and find the relevant technical guidance.

Choose the closest answer12vAC fuse blown

500 Series Door Release All phones Not releasing 12vAC fuse blown

Recommended guidance500 Series

What to check

In the Power Supply the Red LED should be ON indicating the fuse is good for 12v AC output

Replace Fuse with similar rating 1.6-2 Amp 20mm glass fuse.

ID13533