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Saunier Duval Ignition Lead S1040200

Saunier Duval

Saunier Duval Ignition Lead S1040200

Ignition lead for Saunier Duval Isofast Condens F35E boilers, supplied under part number S1040200.

At a glance

  • Appliance family: Isofast Condens F35E
  • Also known as 1417029
Manufacturer part no.
S1040200
Showing prices

£24.97

£20.81 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 Saunier Duval ignition lead, part number S1040200, is a high-voltage lead that carries the ignition spark to the burner electrode on Isofast Condens F35E boilers. It sits within the boiler's ignition circuit, so a fault in the lead can prevent the appliance from lighting.

Signs this part needs replacing

  • The boiler fails to light and goes to lockout on demand for heat or hot water
  • No spark is visible at the electrode when the ignition sequence runs
  • The lead shows cracked, perished or heat-damaged insulation
  • Spark tracking or arcing is visible along the lead or at its terminations
  • The spark jumps to earth instead of across the electrode gap

Before you order

  • Confirm the boiler is a Saunier Duval Isofast Condens F35E
  • Check the appliance serial number against the fitment notes to identify the correct lead
  • Confirm the existing lead is marked with part number S1040200
  • Inspect the electrode and the rest of the ignition circuit, as the fault may not lie with the lead

Not sure which part?

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