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Potterton Thermocouple 10/20370

Potterton

Potterton Thermocouple 10/20370

Thermocouple with locknut for Potterton Puma 80 and Puma 100 E boilers with SIT or Honeywell controls.

At a glance

  • Also known as 1120286
Manufacturer part no.
10/20370
GC number
289-476
Showing prices

£15.82

£13.18 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 10/20370 is a thermocouple supplied with a locknut, used on Potterton Puma gas boilers. It sits in the pilot flame assembly and generates the small voltage that holds the gas valve open while a flame is proven. It is listed for Puma models running SIT or Honeywell controls.

Signs this part needs replacing

  • The pilot flame lights but goes out as soon as the control knob is released
  • The boiler repeatedly locks out or fails to establish a flame
  • The pilot flame will not hold during normal running
  • Intermittent shutdowns that clear after the pilot is relit
  • The thermocouple tip or lead shows signs of heat damage or corrosion

Before you order

  • Confirm the appliance is a Potterton Puma 80 or Puma 100 E
  • Check whether the boiler is fitted with SIT or Honeywell controls
  • Compare the existing thermocouple and locknut against the part number 10/20370
  • Isolate the gas and power supply before any work on the pilot assembly

Not sure which part?

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