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Potterton Burner FS70 5142379

Potterton

Potterton Burner FS70 5142379

Burner (FS70), part 5142379, for Potterton Commercial Sirius 2 and Sirius 3 boilers.

Manufacturer part no.
5142379
Showing prices

£207.60

£173.00 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 BURNER (FS70) is a burner assembly supplied under part number 5142379 for Potterton Commercial boiler appliances. It forms the firing component of the boiler, where fuel is introduced and ignited to produce the heat transferred to the system water. It is listed for Potterton Commercial Sirius 2 and Sirius 3 models.

Signs this part needs replacing

  • The boiler repeatedly locks out or fails to establish a stable flame.
  • Visible damage, distortion or corrosion to the burner body or its head.
  • Soot deposits, discolouration or uneven burning across the burner surface.
  • Flame failure or intermittent firing during normal operation.

Before you order

  • Confirm the boiler model against the fit list above before ordering.
  • Check the existing burner's part number or designation to confirm it matches FS70.
  • Verify that the fault lies with the burner itself and not with the gas valve, ignition or control components.

Not sure which part?

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