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Vaillant Wiring Harness Diagnostic 0020175848

Vaillant

Vaillant Wiring Harness Diagnostic 0020175848

Vaillant diagnostic wiring harness, part number 0020175848, for Arotherm VWL 2 A 230V heat pumps.

At a glance

  • Part type: wiring harness, diagnostic
  • Appliance family: Arotherm VWL 2 A 230V heat pumps
  • Also known as 1386334
Manufacturer part no.
0020175848
Showing prices

£9.42

£7.85 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 0020175848 is a diagnostic wiring harness used on Vaillant Arotherm VWL 2 A 230V air-to-water heat pumps. It forms the electrical connection used when running diagnostic checks on the appliance. The harness is supplied as a single part under Vaillant part number 0020175848.

Signs this part needs replacing

  • Diagnostic readings are intermittent or absent when the harness is connected
  • Visible damage to the harness insulation, such as chafing, cracking or heat marks
  • Connectors are loose, corroded or fail to latch onto their terminals
  • Continuity faults traced along the harness during fault finding
  • The harness has been disturbed or pinched during previous service work

Before you order

  • Confirm the appliance model matches one of the VWL 2 A 230V variants listed above
  • Check the existing harness part number against 0020175848
  • Inspect the connectors and terminals for damage that may also need attention
  • Verify the fault lies with the harness rather than the diagnostic equipment or control board

Not sure which part?

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