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sdiluca · ‎07.12.2021

Hi, all, I am a Viessman customer. I had an e9 error when my vitodens 200 trys to turn on. I can hear also a explosion rumor like a boom when burner try to turn on. My techinician changed two electrodes, cleaned up the burner, but my vitodens can't turn on. My techinician says me that gas pressure is maybe too low (static 20mbar, dynamic 14 mbar). Could you help me to troubleshooting ? What kind of check can I suggest to my techinician? I apologize for my poor english. Thanks in advance.

sdiluca · ‎23.06.2020

I called Viessman manteiner, maybe the solar circuit pressure was too low: the collector distance from heater is 10 meter, and we had a 2,5 bar. Now their set the circuit at 4 bar and the system works fine. The collector temperature is never over 75-80 celsius degree and the hot water goes 60-65 degree. Thanks a lot again for the explanation.

Patrick_Zarges · ‎24.06.2019

For Vitotrol and Vitosolic you can use the same 145 plug. The bus system is able to separate the two signals. It is also possible to connect from Vitotronic 200 >> Vitosolic >> Vitotrol (series connection) Best Regards °pa

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