Thema "Re: Error A9 and EEV 05 333-G" in Wärmepumpe & Hybridsysteme

Error A9 and EEV 05 333-G

zoo — Tue, 19 Mar 2024 07:40:07 GMT

Hi.

Now my new heat pump stops with A9 and EEV 05 every day. What does that even mean? And what should I troubleshoot? Please help.

Re: Error A9 and EEV 05 333-G

Marcel_Huehn — Tue, 19 Mar 2024 10:33:59 GMT

Hello zoo,

as we could see from our system, your facility is located in Sweden.

Please contact the responsible colleagues about this.

info@viessmann.se

Best regards

Marcel

Re: Error A9 and EEV 05 333-G

zoo — Tue, 19 Mar 2024 15:54:34 GMT

Is the error messages different between Sweden and Germany?

Re: Error A9 and EEV 05 333-G

zoo — Fri, 22 Mar 2024 02:31:56 GMT

Replying to myself.

A community, should be including and helpful. I found the answer neither including of helpful. So I will share my troubleshooting here. For the community.

So. If you look into the graph. You can see that it stopped not even running the compressor at 100%. Temps from the well was -1.2 and -6.3. I have had lower temps when it was colder, so nothing really new other than that the pump throws a9 and EEV 05.

If anyone can chime in. In what scenarios can the pump throw those two messages? If I know that I can start logging those specific parameters.

Re: Error A9 and EEV 05 333-G

zoo — Fri, 22 Mar 2024 14:52:28 GMT

Replying to myself again. I checked the message log and I actually have more error codes this time. 07,05,C9,AC.

If anyone knows what they mean. I'm happy to get the German error description 🙂

And is it possible to program the machine to restart? I will be skiing in Austria next week and I don't want my house to freeze while I'm away.

Re: Error A9 and EEV 05 333-G

zoo — Fri, 22 Mar 2024 16:19:36 GMT

Here is also the log data for hot gas etc. for tonights stop.