I have two Schindler 330a 's which one day stopped communicating with each other
and now there is a red led LIT on EBCOM BOARD
Tried a new EBCOM BOARD with no luck
units work like to separate elevators using risers next to each other but both will
return from from fire key fixture
any ideas would be appreciated

ebcom sw position on each car ?

car 1 a=on b=off
car 2 a=on b= on
I believe that's their position from memory

car 1 a=on b=off
car 2 a=on b= on
I believe that's their position from memory
thanks for reply

Check those switches mentioned above. I have ran into that issue before, I changed set those switches and did something else to fix it but I can't remember. All of the info for this is noted in the prints.