I replaced the old 9800 keypad with 9827. The whole system was the left by the previous home owner and I think not used for a few year. Bought a new battery. The old keypad had beeping sounds when pressing the keys but some keys were not working so I decided to replace it. However no info on the screen. Only have one keypad.
With the new keypad, address set to 1, and with cables connected the same way as the old one, I am getting the following:
Does anyone know what error is this? I did power down mains first, then battery, then waited a bit and connected battery and mains. I do have the user code but doesn't seem to do anything. Now there is no sound coming even when I press the keys.
This is the panel - does anyone see anything blatantly wrong/missing? Thanks
And one more picture. Is the NVM chip missing?