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Vaillant Cable Extension Thermal Fuse 7C 0020135110

Vaillant

Vaillant Cable Extension Thermal Fuse 7C 0020135110

Vaillant cable extension for the thermal fuse 7C circuit, part number 0020135110, for ecoTEC PLUS 637, 837 and 937 boilers.

At a glance

  • Also known as 1383369
Manufacturer part no.
0020135110
Showing prices

£13.68

£11.40 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 0020135110 is a cable extension for the thermal fuse (7C) circuit. It is used in Vaillant ecoTEC PLUS gas boilers to link the thermal fuse into the boiler wiring loom. The part sits within the wiring category of Vaillant boiler spares.

Signs this part needs replacing

  • Boiler locks out or displays a thermal fuse fault code
  • Continuity test across the thermal fuse lead shows an open circuit
  • Visible heat damage, scorching or brittle insulation on the cable
  • Boiler shuts down during operation and will not reset
  • Loose or corroded connections at the cable ends

Before you order

  • Confirm your boiler model and GC number against the fitment list above
  • Check the existing cable and thermal fuse for damage before ordering
  • Isolate the boiler from the electrical supply before fitting
  • Verify the connector type and cable routing match the existing cable

Not sure which part?

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