Vaillant
Vaillant Wiring Harness Modbus Inverter 0020175822
Vaillant Modbus inverter wiring harness, part number 0020175822, for Arotherm VWL heat pump models.
At a glance
- Part type: wiring harness
- Appliance family: Arotherm VWL 55/2, VWL 85/2 and VWL 115/2 A 230V
- Also known as 1386294
£44.54
£37.12 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
This is a Modbus inverter wiring harness manufactured by Vaillant, carrying part number 0020175822. It forms the electrical link between the inverter and the Modbus control circuit on Vaillant Arotherm VWL air-to-water heat pumps. The harness is supplied as a single assembly for use during fault diagnosis or repair of the inverter communication circuit.
Signs this part needs replacing
- Modbus communication faults logged against the inverter
- Intermittent or lost communication between the inverter and the control board
- Visible damage to the harness insulation, such as chafing, cracking or heat marking
- Loose, corroded or discoloured terminals at either end of the harness
- Inverter faults that clear or change when the harness is moved or reseated
Before you order
- Confirm your appliance model matches one of the fitments listed above
- Check the part number on the existing harness against 0020175822
- Inspect the inverter and control board connectors for damage before fitting a replacement harness
- Confirm the fault is traced to the harness rather than the inverter or control board
Compliance
| Alternative numbers | 1386294 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWL 115/2 A 230V | — | — | — | |
| VAILLANT VWL 55/2 A 230V | — | — | — | |
| VAILLANT VWL 85/2 A 230V | — | — | — | |
| VAILLANT aroTHERM VWL 115/2 A 230V (2013) | — | — | — | |
| VAILLANT aroTHERM VWL 55/2 A 230V (2014) | — | — | — | |
| VAILLANT aroTHERM VWL 85/2 A 230V (2013) | — | — | — |
Documents & drawings
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