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Vaillant Wiring Harness Inverter/Compressor 0020273273

Vaillant

Vaillant Wiring Harness Inverter/Compressor 0020273273

Wiring harness for the inverter and compressor circuit on Vaillant Arotherm 5/5 VWL 105/5 and VWL 125/5 AS 230V S2 heat pumps.

At a glance

  • Appliance family: Arotherm 5/5
  • Also known as 1392824
Manufacturer part no.
0020273273
Showing prices

£55.25

£46.04 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Vaillant 0020273273 is a wiring harness that connects the inverter and compressor circuit within the appliance. It is supplied by Vaillant for use on Arotherm 5/5 air-to-water heat pumps. The harness carries the control and power connections between the inverter module and the compressor.

Signs this part needs replacing

  • The compressor fails to start or cuts out intermittently with no mechanical fault found.
  • Inverter or compressor communication faults are logged by the appliance controls.
  • Visible damage to the harness, such as chafed insulation, a cracked connector body or a pulled terminal.
  • Heat discolouration or brittle, hardened insulation around the connector ends.
  • Continuity testing shows an open or intermittent circuit through the harness.

Before you order

  • Confirm the appliance model against the fit list above, checking the data plate on the unit.
  • Compare the connector count and plug types on the new harness with the one removed.
  • Check whether the fault lies in the harness itself rather than the inverter or compressor.
  • Note the part number printed on the existing harness before ordering.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.