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Johnson & Starley Thermistat (MAF) Celsia & B Gas 1000-0519320

Johnson & Starley

Johnson & Starley Thermistat (MAF) Celsia & B Gas 1000-0519320

Johnson & Starley thermistat (MAF) for Celsia and B Gas applications, used in Hispec warm air units.

At a glance

  • Also known as 1690952
Manufacturer part no.
1000-0519320
GC number
E05-251
Showing prices

£110.51

£92.09 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

This is a Johnson & Starley thermistat (MAF) for Celsia and B Gas applications. It is used in Johnson & Starley Hispec warm air units to provide temperature sensing and control. The part is listed under SKU 1000-0519320.

Signs this part needs replacing

  • The appliance does not respond to temperature changes or fails to reach the set temperature.
  • Heating cycles on and off more frequently than expected.
  • The appliance produces no heat demand despite a call for heat.
  • Temperature control is erratic or inaccurate.
  • A fault code or diagnostic indication points to the thermostat or temperature sensor circuit.

Before you order

  • Check the appliance model against the fit list above.
  • Confirm the existing part is marked as thermistat (MAF) or matches SKU 1000-0519320.
  • Verify the appliance is a Johnson & Starley Hispec warm air unit.
  • If unsure, consult the manufacturer's parts list for your model.

Not sure which part?

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