vrt50

Hello Everyone, I'm new to this board and I wonder if you can help with the following enquiry, please? We had a new boiler fitted earlier this year, a Vaillant ecoFIT pure with a Vaillant timeSWITCH 150 and VRT50 thermostat. Since last night, for some reason we have not been able to lower the...

Hi, I want to replace my VRT50 thermostat with a Salus ST620VBC programmable thermostat. Installation looks simple, however my question is- Do I need to disconnect the existing wiring from the boiler (Ecotec Pro 24)? I believe it uses an eBus connection (not too sure what that means). Or can...