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Reznor 03 24958 Limit Switch Thermal Overheat Capillary Type LSI

Reznor

Reznor 03 24958 Limit Switch Thermal Overheat Capillary Type LSI

Capillary type thermal overheat limit switch, Reznor part 03 24958, for ML1511, ML1515 and ML1520 room sealed unit heaters.

At a glance

  • Also known as 2530950
Manufacturer part no.
03 24958
Showing prices

£95.92

£79.93 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Reznor 03 24958 is a capillary type thermal overheat limit switch (LSI) used in Reznor room sealed unit heaters. It acts as a safety cut-out, interrupting the burner circuit when the appliance overheats. It is listed under thermostats in gas boiler spares.

Signs this part needs replacing

  • Appliance locks out or shuts down before reaching set temperature
  • Burner fails to fire and requires repeated resetting
  • Heater runs briefly then cuts out during operation
  • No heat despite the fan running
  • Overheat cut-out trips repeatedly

Before you order

  • Confirm the existing switch is marked with Reznor part number 03 24958 or 0324958
  • Check the switch is capillary type
  • Verify the appliance model against the fitment list (ML1511, ML1515, ML1520)

Not sure which part?

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