HomeMatic-Forum / FHZ-Forum

Forget my previous post. The "Valve-Offset" isn't doing anything. Its easy to prove. Set the demanded temperature "low". Now the valve should be at 0%. Thereafter you van set the "Valve-Offset" at 100%. Switch on the boiler. Now the radiator should become warm because the valve is totally open by th...

HmIP-eTRV-B-2 valves are in general not opening wide enough. The HmIP-eTRV-B-2 seems to carefully open the valve to find a steady state of heating to compensate the energy loss. I am studying my graphics of target temperature, actual temperature, valve opening and boiler switch. I am noticing that i...

I am having an installation with 10 groups, a CCU3 with Raspberrymatic. The groups are configured: 8 groups: HmIP-eTRV-B-2 + HmIP-WTH-1 1 group: 2x HmIP-eTRV-B-2 + HmIP-WTH-1 1 group: 3x HmIP-eTRV-B-2 + HmIP-WTH-1 The installation is working fine except for the two multi HmIP-eTRV-B-2 groups. The va...

I am converting my FHEM based MAX! system towards an CCU3 based Homatic IP system. Because the MAX! system didn't include a heating control switch, I had to create my own solution. This has worked for years and I want to convert it to Homematic IP. My heating control is quite simple. The openings of...