Central heating working fine last night then I heard the stat clicking on and off every few seconds. Upon checking found garbled message on the digital display of the RWB9. Then heard the motorized valve clicking. Switched the power to the RWB9 off tried a reset by pressing the reset button. However the same thing happened again.
Any ideas if the problem is a programmer problem or is the likely that the motorized valve is the problem. Even better would be any solutions to rectify would be be appreciated. The programmer is still under warranty.
Andrew