I recently got a triplex of Otis 211s and everyone and awhile non of the cars will respond to hall calls. Can give car call from controllers. The master cars “ring” led is out on the cpu board but the other two it still flashes normally. As soon as I rest master car the the ring light comes back and all all will respond to hall calls. It’s will last for a week sometime 3. Then happen again.
Any ideas?