Saunier Duval
Saunier Duval Ignition Lead S1043600
Ignition lead for Saunier Duval Isofast Condens F35E and Isotwin Condens F35E boilers, part number S1043600.
At a glance
- Part type: ignition lead
- Also known as 1420617
£14.44
£12.03 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The S1043600 is an ignition lead manufactured by Saunier Duval. It carries the high-voltage supply from the ignition source to the electrode on Isofast Condens F35E and Isotwin Condens F35E condensing boilers, allowing the spark to be generated at the burner. A sound lead is essential for reliable lighting and for holding a stable flame on start-up.
Signs this part needs replacing
- The boiler attempts to start but no spark is produced at the electrode
- Repeated lockouts or failed ignition attempts on start-up
- Intermittent ignition that clears when the lead is disturbed
- Visible cracking, brittleness, scorching or tracking on the lead insulation
- Arcing or sparking visible along the lead instead of at the electrode
Before you order
- Confirm the boiler model is an Isofast Condens F35E or Isotwin Condens F35E
- On Isofast Condens F35E, check the serial number against 0400446159 to confirm the correct variant
- Check the electrode and ignition source as well, since loss of spark can originate there rather than in the lead
- Inspect the lead end connections for damage before ordering a replacement
Compliance
| Alternative numbers | 1420617 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SAUNIER DUVAL ISOFAST CONDENS F35E - AFTER SERIAL No 0400446159 | 47-920-46A | 47-920-46A | — | — |
| SAUNIER DUVAL ISOFAST CONDENS F35E - BEFORE SERIAL No 0400446159 | 47-920-46 | 47-920-46 | — | — |
| SAUNIER DUVAL ISOTWIN CONDENS F35E | 47-920-47 | 47-920-47 | — | — |
| SAUNIER DUVAL SAUNIER DUVAL ISOFAST CONDENS F35E AFTER SERIAL No 0400446159 | — | — | — | |
| SAUNIER DUVAL SAUNIER DUVAL ISOFAST CONDENS F35E BEFORE SERIAL No 0400446159 | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
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