I have OpenHAB on Rpi as the controller (serial) and few sensors. All the sensors require simplex communication work perfectly. But my (only one) relay is not responding at all. When I switch it On, I get 'ffffff' and when Off, it's '000000'.

Testing with MYSController works fine.

I'm using Arduino IDE ver 1.6.7 and MySensors ver 1.5.4. Please help. Thank you.

Serial output below.

read: 0-0-3 s=1,c=1,t=2,pt=0,l=6,sg=0:ffffff
Incoming change for sensor:1, New status: 0
read: 0-0-3 s=1,c=1,t=2,pt=0,l=6,sg=0:000000
Incoming change for sensor:1, New status: 0