BoilerFaultCodesVaillant VCW 20/1 T3W Fault codes & diagnostics
The manual for this boiler has no fault code table.
Combi Natural Gas 1988 Discontinued
GC Number 47-044-03
Download the Vaillant VCW 20/1 T3W manual
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No fault code table in its manual
We've read the Vaillant VCW 20/1 T3W manual we hold, and it has no fault code table, so there are no codes to list. We don't fill the gap with codes from a similar boiler, because the same code can mean something different on another model. The fault code table in the installation manual is the one to trust.