I have just found out to my cost (new HR92 needed) that if your radiator valve presents horizontally to the TRV, then if you have any sort of small leak from your radiator valve, any liquid travels straight into the HR92 housing and fries the electrics. Mine was a really small leak, (eggcup worth on the floor), but still enough to kill the HR92.

I am having the valve modified to present to the TRV vertically as I don't want to keep buying new HR92's!

Could Honeywell consider for future engineering plans please?