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Vaillant NTC Sensor 19mm 0020068120

Vaillant

Vaillant NTC Sensor 19mm 0020068120

Vaillant NTC 19 mm temperature sensor, part 0020068120, for ecoTEC PLUS boilers and Unistor VIH CL 15 S cylinders.

At a glance

  • Also known as SENSOR-NTC-19MM, 1383591
Manufacturer part no.
0020068120
Showing prices

£28.16

£23.47 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 0020068120 is a 19 mm NTC thermistor sensor used on Vaillant gas boilers and hot water cylinders. It feeds temperature information back to the appliance control board so that heating and hot water output can be regulated. It is listed as a spare for the ecoTEC PLUS range and the Unistor VIH CL 15 S cylinder.

Signs this part needs replacing

  • The boiler locks out or reports a temperature sensor fault
  • Domestic hot water runs hot and cold, or the temperature is inconsistent
  • Flow or return temperature readings on the display look wrong or erratic
  • The boiler short-cycles or modulates unevenly
  • The sensor body, lead or plug shows corrosion, cracking or heat damage

Before you order

  • Check the appliance model and GC number on the data plate against the fit list above
  • Compare the sensor length and connector with the part being removed
  • Confirm the correct sensor for your appliance variant against the manufacturer's parts list

Not sure which part?

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