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Glow-worm twin fuse PCB S900847

Refurbished

Glow-worm twin fuse PCB S900847

Twin fuse printed circuit board for Glow-worm Ultimate and Micron boilers, also used in Saunier Duval Xeon and Protherm models.

At a glance

  • Also known as 9500028
  • Fitting and commissioning must be carried out by a Gas Safe registered engineer
Manufacturer part no.
N0983-1
Showing prices

£69.12

£57.60 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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

A twin fuse printed circuit board, part number S900847, with a 7-wire TPO connection and two fuses. It is fitted across several boiler brands from the same manufacturing group, including Glow-worm, Saunier Duval and Protherm, and acts as the boiler's control centre for ignition, pump and fan operation and safety monitoring.

Signs this part needs replacing

  • Boiler fails to ignite or locks out repeatedly
  • One or both fuses blowing repeatedly
  • Display blank or showing a persistent fault code
  • Pump or fan not responding to a call for heat

Before you order

  • Match S900847 against the number on your existing board
  • Isolate the electrical supply before removing the old board
  • Fitting and commissioning must be carried out by a Gas Safe registered engineer

Not sure which part?

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