Corrupt VMB1TS

I recently installed 8 temperature sensors and they’re working great.
3 of them however don’t respond to the Temperature Controller commands. Even though they can be operated manually and are recognized by the TC and can be provided with the program steps, they refuse to follow the timing.
I already restored the factory settings, erased them and installed them again, checked the wiring, even changed their physical positions, tried other channels but no result.
Unfortunately my first ever installed module was one of those three… it took me quite a while to figure out why de TC commands are failing. But glad to know there seems to be nothing wrong with the TC.
Something else i can try or should i send them back to Velbus?

I have contacted you by e-mail