Recent content by GiAl

Hi SJRSJR, you seem to have exactly the same setup that I was looking at in order to upgrade my system, I hope you do not mind if I ask you a couple of questions. Do the VR50s simply operate the radiator valve ON/OFF depending on the temperature set vs. the ambient temperature or do they also...

Thank you RandomGrinch, form the pic it seems a capacitor, which, as you say, would only retain the settings for a very limited time. Your question "How can a battery powered, wireless device lose power due to a mains outage?" is legitimate (and I should have thought of it earlier !). I have the...

Hi, I would like to upgrade my heating system (ecotec plus VMW 346/5-5 with a VRT370f thermostat) to be able to remotely control it. I was looking at installing a VRC720f thermostat with a VR921 box and several VR50 TRVs to be controlled with the Vaillant app. Before embarking in the full...

I have a Vaillant ecotec plus VMW 346/5-5 with a VRT370f thermostat. I had set the thermostat to a low temperature before going on holiday, when I returned the heating was on, date and time in the thermostat were wrong. There had been an interruption in the mains and the thermostat had...

I have a problem with an Echomax 835E: after HW running for about ten minutes, the water gets cold and the boiler goes in S54 state. A couple of days ago, the house got freezing cold and the display was showing F23. When the thermostat clicks on, the boiler flame goes to max for 10secs or so...

I need some experienced help here: I have a Vaillant VHR 35 C that has been behaving erratically in the last few months: after the hot water is left running for some time form the tap, the boiler goes in an S54 state and the water gets cold. I then have to reset it and hot water comes again...