Hi
We had a problem with one set of our shutters and spoke to Maria at RyF and they were going to have a look but in the meantime my husband fixed the problem. We couldn't get the switch to work and when the cover was taken off, the switch had been set too far back and although the builders had packed it out with a bit of cardboard, it wasn't making contact when the socket was placed on top. We bought some plaster mix and fixed the problem. Maria is very helpful and I'm sure RyF would investigate if you need them too. Hope you get the problem sorted.