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Glow-worm Printed Circuit Board S900847

Glow-worm

Glow-worm Printed Circuit Board S900847

Printed circuit board for Glow-worm Micron and Ultimate boilers, and certain Saunier Duval XEON models.

At a glance

  • Also known as 1336685, N0414
Manufacturer part no.
S900847
GC number
792-722
Showing prices

£200.78

£167.32 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next 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

The Glow-worm S900847 is a printed circuit board (PCB) for gas boilers, incorporating TPO, a 7-wire connection and a twin fuse. It controls the boiler's electrical functions, including ignition, sequencing and safety monitoring. This board is used across Glow-worm Micron and Ultimate models, as well as certain Saunier Duval XEON appliances.

Signs this part needs replacing

  • Boiler fails to fire or respond to heating or hot water demand
  • No power, display or indicator lights on the boiler control panel
  • Repeated fuse failure on the board
  • Intermittent lockouts or erratic boiler operation
  • Visible burn marks, corrosion or damage on the PCB

Before you order

  • Confirm your boiler model and GC number against the fitment list
  • Check the existing PCB for part number S900847 or replaced code 900847
  • Verify the number of wires and fuse configuration match your existing board
  • Ensure the boiler is isolated from the electrical supply before fitting

Not sure which part?

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