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Saunier Duval Ignition Lead S1077200

Saunier Duval

Saunier Duval Ignition Lead S1077200

Ignition lead S1077200 from Saunier Duval, listed for the Isotwin Condens F35E.

At a glance

  • Part type: ignition lead / ignitor harness
  • Appliance family: Isotwin Condens
  • Also known as 1417297
Manufacturer part no.
S1077200
Showing prices

£32.92

£27.43 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 S1077200 is an ignition lead (ignitor harness) manufactured by Saunier Duval. It forms part of the ignition circuit on the Isotwin Condens appliance family, carrying the ignition signal to the burner assembly. It is supplied as a single harness assembly.

Signs this part needs replacing

  • The appliance fails to ignite, with no spark at the burner.
  • Ignition is intermittent, with the boiler locking out on some start attempts.
  • Visible damage to the lead, such as cracked or perished insulation.
  • Charring, brittleness or exposed conductor at the connector ends.
  • Lockout codes relating to flame or ignition failure that persist after cleaning the ignition electrode.

Before you order

  • Confirm the appliance model is the Isotwin Condens F35E.
  • Check the existing lead routing and connector type against the part before fitting.
  • Inspect the ignition electrode and its gap at the same time, as faults there can mimic a failed lead.
  • Isolate the power and gas supply before carrying out any work on the ignition circuit.

Not sure which part?

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