Viessmann
Viessmann Coding Plug 20300304
Viessmann coding plug 20300304, used on Vitodens appliances built from 29.10.2004.
At a glance
- Part type: coding plug
- Also known as 2321764
£24.49
£20.41 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Viessmann coding plug 20300304 is a configuration component used on Viessmann Vitodens gas condensing appliances. It carries the coding that the appliance control reads to establish its operating parameters. This part is specified for appliances from 29.10.2004 onwards.
Signs this part needs replacing
- The appliance reports a coding or configuration fault at the control
- The boiler fails to run or locks out despite no other fault being present
- Output or operating behaviour does not match the appliance model after a control or PCB change
- The plug is physically damaged, corroded or has loose or broken pins
Before you order
- Confirm the part number on the existing plug matches 20300304
- Check the appliance model and serial number against the fitment listed above
- Confirm the appliance was manufactured on or after 29.10.2004
- Check whether the coding plug has been superseded on your particular appliance variant
Compliance
| Alternative numbers | 2321764 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS WB3A SYSTEM 26KW SERIAL No. 7176537 | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.