Because the D6 error often involves the and electrical wiring , it is generally not a DIY fix. For safety and to maintain your warranty, Viessmann recommends that all internal adjustments be performed by an authorised contractor.
A: Viessmann offers a standard 5-12 year warranty on heat exchangers, but electronics are typically covered for 2 years from purchase. Check your documentation. viessmann d6 error
When a D6 error appears, the boiler's internal computer has detected that it cannot "talk" to a component or is receiving an invalid signal. This usually results in: Because the D6 error often involves the and
If you're in the US, you can contact the at 844-649-5886 for authorized support. If you'd like, I can help you: Find a local authorized installer viessmann d6 error