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Vaillant NTC Sensor 0020039796

Vaillant

Vaillant NTC Sensor 0020039796

NTC sensor for the domestic hot water outlet pipe on Vaillant ecoTEC PLUS boilers, part number 0020039796.

At a glance

  • Appliance family: ecoTEC PLUS
  • Also known as 1381476
Manufacturer part no.
0020039796
Showing prices

£9.80

£8.17 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 0020039796 is an NTC sensor that mounts on the domestic hot water outlet pipe. It provides the boiler's control board with a temperature reading from the DHW circuit so the appliance can regulate hot water delivery. It is used across the Vaillant ecoTEC PLUS range.

Signs this part needs replacing

  • Hot water temperature at the tap fluctuates or runs hot and cold
  • The boiler fails to hold a steady DHW setpoint
  • DHW temperature readings drift from the actual outlet temperature
  • An open or short circuit fault is reported against the DHW sensor
  • Visible damage, corrosion or heavy scale on the sensor body or lead

Before you order

  • Confirm your boiler model and GC number against the fit list above
  • Check the part number on the sensor being removed matches 0020039796
  • Confirm the sensor is fitted to the DHW outlet pipe on your appliance
  • Compare the connector and lead length on the old sensor with the new part

Not sure which part?

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