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UCM D9 and D10 LEDs
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 Posted: Sunday Aug 2nd, 2015 10:35 am
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slychiu
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The D9 (red) and D10 (Green) leds on a UCM must both be blinking continuously for normal operation. These show the RS485 communications. D10 (Green) is the received message and D9 (red) is the transmitted message

If D9 Red led is off it means that the UCM ID is not polled by Comfort. This is normally due to an ID issue. Check the ID of the UCM, and do a Scan for UCMs in Comfigurator

If D10 Green Led is off, it means that the RS485 (KA and KB) signals are not connected to Comfort.

The video shows the D9 and D10 leds on the UCM

https://youtu.be/FoM9ZKqVt0o

The Green led may appear to be on steady due to very fast blinking

How to change the UCM ID here http://www.comfortforums.com/forum4/3418.html

Last edited on Sunday Aug 2nd, 2015 10:40 am by slychiu



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