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Potterton Thermistor 10/18761

Potterton

Potterton Thermistor 10/18761

Potterton thermistor for sensing domestic hot water and central heating water temperature in compatible boilers.

At a glance

  • Also known as 1120086
Manufacturer part no.
10/18761
GC number
337-322
Showing prices

£86.40

£72.00 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 Potterton 10/18761 is a thermistor used to sense domestic hot water and central heating water temperature on compatible Potterton gas boilers. It reports water temperature back to the boiler's control system so that firing and modulation can be managed correctly. This sensor supersedes earlier code 43001101.

Signs this part needs replacing

  • Boiler displays a temperature-related fault code or lockout
  • Domestic hot water runs hot and cold instead of holding a steady temperature
  • Central heating flow temperature reads incorrectly or erratically on the display
  • Boiler short-cycles or fails to modulate as expected
  • Sensor readings drift from the actual measured pipe temperature

Before you order

  • Confirm your boiler model against the fitment list above
  • Check the existing sensor's part number and connector type before removal
  • Inspect the sensor wiring and plug for damage or corrosion
  • Isolate the appliance and follow the manufacturer's procedure for sensor replacement

Not sure which part?

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