Vaillant
Vaillant 0020128697 Wiring harness
At a glance
- Part type: Cables, Leads & Wiring Harnesses
- Also known as VAILLANT0020128697
£169.34
£141.12 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 Vaillant 0020128697 is a wiring harness supplied as a spare part for Vaillant water heaters and associated heating appliances. It is the electrical loom that carries power and control signals between components inside the unit, so that sensors, switches and the main control board communicate as intended. Because it is built to the manufacturer's own specification, the connector types, pin layout and cable routing match the appliance it was designed for.
Signs this part needs replacing
- The appliance cuts out intermittently or behaves erratically with no obvious mechanical cause
- Fault codes relating to sensors or internal components appear and will not clear after a reset
- The loom shows visible damage, such as chafed, scorched, cracked or brittle insulation
- Connectors are loose, corroded, pushed back out of the housing or show signs of heat damage
- A component tests correctly on its own but does not respond once fitted to the appliance
Before you order
- Check the model and serial number on the appliance data plate and confirm the harness is the correct one for that unit
- Compare the number printed on the existing harness against 0020128697 before removing it
- Inspect the connectors and any seals or gaskets disturbed during removal, and replace them if they are worn
Mechanical
| Part type | Cables, Leads & Wiring Harnesses |
|---|
Compliance
| Manufacturer part number (MPN) | 0020128697 |
|---|---|
| Barcode / EAN | 0020128697 |
| Commodity code | 8544 42 90 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | VAILLANT0020128697, 1383147 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VAILLANT ECOTEC PLUS 824 - VUW 246/3-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 824 - VUW 246/3-5 R1 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 824 - VUW 246/3-5 R3 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 831 - VUW 316/3-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 831 - VUW 316/3-5 R1 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 831 - VUW 316/3-5 R3 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 831 - VUW 316/3-5 R5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PRO 24 - VUW 246/3-3 R1 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PRO 28 - VUW 286/3-3 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PRO 28 - VUW 286/3-3 R1 | — | — | — |
Showing 10 of 32 compatible appliances.
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 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.