Call a Viessmann-trained technician immediately if:
A: No. The boiler’s safety logic prevents operation when bus communication fails. Do not attempt to hot-wire the boiler – this is extremely dangerous. viessmann d6 error
Disclaimer: This guide is for informational purposes. Always adhere to local safety regulations. Viessmann boilers should be serviced by qualified technicians. Call a Viessmann-trained technician immediately if: A: No