BoilerFaultCodesWorcester Bosch Highflow 400 OF Fault codes & diagnostics
No fault codes listed yet: we only list codes read from this boiler's own manual.
Which version do you have?
The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.
| GC number | Appliance (register name) | Produced |
|---|---|---|
| 47-311-20 | Highflow 400 OF | 1997–2002 |
Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.
No fault codes for this model yet
We hold the Worcester Bosch Highflow 400 OF user guide, which has no fault code table, and haven't got the installation manual yet. 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.