How to Replace the Ignition Electrode on a Ferroli Modena 32C (UK)
Step-by-step UK guide to replacing the spark / ionisation electrode on a Ferroli Modena 32C. Part numbers, torques, commissioning.
Ferroli
The part
Renew the ignition and flame-sense electrodes on Ferroli Modena 32C when you get F27 / EA / L2 flame-detection faults after a clean burn.
Isolate safely
Both electrodes on Ferroli Modena 32C use ceramic insulators — never re-use if chipped.
Fit and commission
Set the spark gap to 3.5–4.0 mm and the ionisation gap so the tip sits 4–5 mm above the burner surface.
Recommission checklist
Refill the Ferroli Modena 32C to 1.2 bar cold. Bleed high-point radiators and the internal AAV.
Run a full flue-gas analysis after 15 minutes. Log the reading against the OEM commissioning envelope in the Benchmark book.
Frequently asked questions
- Combined or separate?
- Ferroli Modena 32C runs a two-electrode kit — one spark, one sense. Fit both together to avoid a second call-back.
- How do I test ionisation current?
- In service mode read the µA value on Ferroli Modena 32C. Below 4 µA at steady state means clean or replace.
- Do I need to notify the manufacturer?
- Only if the Ferroli Modena 32C is in warranty — Ferroli require log of any part swap for labour claims.
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