vrc470f

Hi, I have a Vaillant heating system at home (Ecotec Plus, VRC470f, VR61) and because I've been repletely facing issues with the VR21 wireless outside sensor (dies every 2 - 4 years) I installed a wired VRC DCF (9535) to replace the VR21 sensor. The new sensor is properly installed and detected...

Got a small problem with my Vaillant VRC 470f wireless weather compensating heating controller that is used with my Eco Tec Plus 937 boiler. Every now and then (a few to several times a week), the clock on the controller randomly resets its self as if new batteries were put in. This has lead to...