Chris Hall

I have an Ademco 20P that I installed myself. I have added several keypads without any issue. I added a keypad in our bedroom hall and can't get it to work. It will display a ready light when the system is ready and it will show an arm light. The readout on the screen is correct. If a door is open it shows the correct zone. The issue is that when you power the keypad up, you can hit a few keys and then they stop beeping. It will not allow any input. I have swapped it with a keypad from another part of the house. The issue has something to do with the wire, not the keypad and not with any kind of programming issue. When I swapped keypads, the issue stayed at the location. So thinking the issue had something to do with the wire, I switched pairs. It's a Cat5 cable so I have 4 extra. I changed to different pairs for the data in and out and had the same result. I swapped the data in and out and the keypad didn't display anything. I put them back and the display is right but still can't use the keypad. I tried doubled up some of the wires so I have two positive and two negative. I haven't tried that with the data wires yet. Has anyone experienced this that could give me some guidance. I worked in the alarm industry for about 7 years and never experienced anything like this.