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Vaillant Temperature Limiter 0020143456

Vaillant

Vaillant Temperature Limiter 0020143456

Vaillant temperature limiter, part 0020143456, for ecoTEC VU 806, 1006 and 1206 boiler models.

At a glance

  • Also known as 1385888
Manufacturer part no.
0020143456
Showing prices

£42.94

£35.78 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 0020143456 is a temperature limiter used in ecoTEC VU boiler models. It forms part of the boiler's safety circuit, cutting the burner when the sensed temperature exceeds the set limit. It is listed under thermostats within the gas boiler spares range.

Signs this part needs replacing

  • The boiler locks out or fails to fire after an overheat event
  • Repeated overheat faults that clear only after the limiter is reset or the boiler cools
  • The limiter has tripped and will not reset
  • Damaged, corroded or heat-affected terminals on the limiter
  • Continuity readings that do not change state as expected when the limiter is tested

Before you order

  • Check the model and revision on the boiler rating plate against the fit list above
  • Confirm the part number on the existing limiter matches 0020143456
  • Check whether the boiler is an R2, R3 or R4 build, as fitment differs across revisions
  • Inspect the wiring and connections at the limiter before replacing it

Not sure which part?

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