Having read some of these threads, it appears that there is a common problem with the receiver I have with my mobile thermostat. It dos work it you give it a couple of taps on the top when heating is called for, but then the next time it is due to come on, you have to do it again.

Anyone have any solve issues for a sticking relay etc on this type of receiver? I have only had it for 3 years is it on its way out and I need a new one?Thanks

AA01, November 2013

Re the sticking relay on Siemens RCR10/433-GB: I found I had a 24V schrack relay fitted in the receiver, but only 12V is being applied when heat is required. The result was (after a year or more of working fine) that it sometimes worked and sometimes it didn’t quite pull over and needed a tap. I need to source a 12V relay with the same footprint.

Tim H., September 2020