Hi TRC Goup

thanks for the time to reply, lamp dimmer is marmitek din rail mounted LD11, communicated through TM13 plugged into mains, the Pronto is a RU990 with timer codes sent via rf to tm13.
Its been working fine, right codes sent all ok, now lights are not turning on or off, it's like B1 and B2 are getting confused between each other.
I have checked to see if there is any thing different plugged in that may be disturbing things but cannot find anything.
Hope thats enough info.

Kind regards

Paul