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Vaillant Wiring Harness 0020210202

Vaillant

Vaillant Wiring Harness 0020210202

Wiring harness with coding resistor for Vaillant ecoTEC plus and VU/VUW boiler models, part number 0020210202.

At a glance

  • Appliance family: ecoTEC plus, VU and VUW
  • Also known as 1388020
Manufacturer part no.
0020210202
Showing prices

£60.50

£50.42 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 0020210202 is a wiring harness with an integrated coding resistor, used on ecoTEC plus gas boilers and related VU/VUW models. It provides the electrical connections and coding link between the boiler's control components. It is supplied as a single harness assembly.

Signs this part needs replacing

  • Boiler fails to fire or repeatedly locks out with wiring-related fault codes
  • Intermittent operation or electrical faults traced back to the harness
  • Visible damage to the harness, such as chafed, burnt, melted or brittle insulation
  • Loose, corroded or pushed-back terminals in the plug connectors
  • Coding resistor fault preventing the boiler from reading the correct appliance configuration

Before you order

  • Confirm the appliance model and GC number against the fit list above
  • Check the part number and connector layout on the existing harness
  • Inspect the boiler's connectors for damage or corrosion before fitting
  • Isolate the electrical supply to the appliance before removal or replacement

Not sure which part?

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

Vaillant Wiring Harness 0020210202 | ecoTEC plus