Combined or separate?

Vokera Compact 29A 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 Vokera Compact 29A. Below 4 µA at steady state means clean or replace.

Only if the Vokera Compact 29A is in warranty — Vokera require log of any part swap for labour claims.

Renew the ignition and flame-sense electrodes on Vokera Compact 29A when you get F27 / EA / L2 flame-detection faults after a clean burn.

Both electrodes on Vokera Compact 29A use ceramic insulators — never re-use if chipped.

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.

Refill the Vokera Compact 29A 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.

Combined or separate?: Vokera Compact 29A 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 Vokera Compact 29A. Below 4 µA at steady state means clean or replace.
Do I need to notify the manufacturer?: Only if the Vokera Compact 29A is in warranty — Vokera require log of any part swap for labour claims.

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