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Johnson & Starley Thermopile S00861

Johnson & Starley

Johnson & Starley Thermopile S00861

Thermopile for Johnson & Starley State SBT appliances with millivolt, non-electronic ignition systems.

At a glance

  • Also known as 1691270
Manufacturer part no.
S00861
Showing prices

£182.76

£152.30 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 S00861 is a thermopile manufactured by Johnson & Starley for use in State SBT appliances. It generates the millivolt signal that holds the gas valve open on non-electronic ignition systems. This part supersedes S00814.

Signs this part needs replacing

  • The pilot lights but will not stay lit once the control knob is released
  • The boiler fails to fire, or drops out shortly after the burner ignites
  • Intermittent operation or repeated lockouts during a call for heat
  • The gas valve does not hold in, with no sustained millivolt output from the thermopile

Before you order

  • Confirm your appliance model against the fit list above
  • Check that the appliance uses a millivolt, non-electronic ignition system
  • Check the part number marked on the existing thermopile before removing it

Not sure which part?

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