Hell, I'm new to the forum and new to the country. I have a BG RC Wireless System which controls the CH, but although all would initially appear to work fine the BG WR1 Receiver seems to "get stuck" at some point during the day. Here is what happens. I follow the "Commissioning the Wireless System" instructions, checking that all works fine every step of the way - no problems. Same goes for the replacement batteries in the BG RC1 Wireless Digital Thermostat. System seems fine, on WR1 receiver the little red "Receive alarm" LED flashes for 7 seconds, green "heating on" LED comes on and warm water circulates perfect. However, when I get home (or wake up in the morning) something's gone wrong. RC1 shows temperature way below what I've set it and it indicates that it is sending signal to WR1 receiver. WR1 receiver has green "Heating on" LED burning but water is not circulating and red "receive alarm" does not flash?. Only way to fix problem is to shut down everything and start over. Any ideas? For the record, I have warm water, I've replaced the batteries on RC1 (in correct sequence) and system is fitted with brand new motorised valve...