Comfort Automation/ Security System Forums

Hi, Hope someone can assist with a simple fix...
I wrote some updated responses to the system tonight and I am no longer able to connect due to a UCM communication failure.For the write selective, I deselected a number of the pre-selected options as it was a very minor response change which should not have influenced any of the other options.
I now cannot connect from Comfigurator via Eth02 - although I can successfully ping the UCM.Keypads are just showing their respective ID\'s with the green light flashing.
I have hard reset the system a few times but with no improvement.
Many thanks in advance...

Please check the ucm leds D9 Red and D10 green. are they blinking or off?

D9 and D10 are both off.  Only D1 is on (solid) on all UCMs.

Also, no cables are disconnected as the unit was working fine prior to the write.I have double checked these with no change in status.

There is no bus communications at all
Disconnect all the wires from KA and KB and connect each one back one by one starting with a Keypad 1, then UCM 1 and Keypad 2
The UCM D9 and D10 should both be blinking

I have now tried all the possible combinations of Keypad and UCM connections with no change to the status.
Soon after I apply 12V to the keypad, it begins to beep indefinitely.The UCM does not connect as expected and a second UCM (GSM) also does not connect if I set it up as ID1.
I have even gone so far as to disconnect the LEM03 and any other inputs to see if that might help.
Any other ideas I can try?

All sorted now.It was a fairly fundamental communication error solved only by reinstating the factory code to allow reconnection to the UCM\'s. 

Many thanks to Hugh (Swiss Toni) for the advice, I wouldn\'t have managed without the ideas offered.

What was the cause of the problem? For future reference