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Johnson & Starley Thermocouple SIT 1000-0704830

Johnson & Starley

Johnson & Starley Thermocouple SIT 1000-0704830

SIT thermocouple for Johnson & Starley Hispec warm air units, part number 1000-0704830.

At a glance

  • Appliance family: Hispec warm air units
  • Also known as 1690511
Manufacturer part no.
1000-0704830
GC number
381-626
Showing prices

£34.75

£28.96 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 Johnson & Starley 1000-0704830 is a SIT thermocouple. It is fitted to Johnson & Starley Hispec warm air units. The thermocouple senses the pilot flame and provides a signal to the appliance's gas control circuit.

Signs this part needs replacing

  • Pilot flame goes out when the control knob is released.
  • The appliance fails to fire or locks out.
  • The pilot will not stay lit without holding the control knob in.
  • Repeated relighting is needed.
  • The gas valve does not remain open after pilot proving.

Before you order

  • Confirm your appliance model is listed in the Fits section.
  • Check the existing thermocouple is marked SIT or matches part number 1000-0704830.
  • Verify the fault is with the thermocouple and not the pilot injector, gas valve, or controls.
  • If unsure, consult the manufacturer's parts list for your appliance.

Not sure which part?

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