Dear Flo, I have a similar problem of tmsblgh with a vitovent 300-w c325. All the problems started with error E1 in the LB1 and at this point i was unable to set the full speed or make others change because the LB1 crash every time. The technician started changed the motherboard but the problem still persist…then they replace LB1 and now the error E1 disappeared. But i noted that the vitovent works at full power and in the menu is not available the “nominal ambient temperature”: i found this post and i checked the service menu and the C1FE is set to -1…the technician did not configure the system? what i have to set now? 32 or 33? C1FD avalable in the service level 2 is set -1 with no other value available. thanks
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