Vaillant Arotherm Owners Thread

[Zarch (Mick Wall)]

@Declan90

Had a 12kW Arotherm Plus installed this last week. Noticed there are a few mentions of firmware differences earlier in this thread - just wondering if anyone is able to confirm what the latest firmware versions are?
I had a look on the VWZ AI module and it gave me two values:
01 - 0351.09.01
02 - 0360.03.01

Our new post and article may be well timed Declan

Vaillant Arotherm Firmware 351.06.07 Problems (Energy Integral)

In the main Arotherm thread we have briefly talked about the double counting bug affecting firmware revision 351.06.07 on Vaillant Arotherm heat pumps. In an attempt to summarise the whole issue, @dfeist and I have co-written an article over on my Energy Stats website to do just that. It will be interesting to hear what version of firmware people are running and whether you are experiencing more cycling than you expect. Good info to know about you system would be Arotherm Model (3.5, 5, 7…