Display shows A06, burner shuts down, often associated with ignition noise or delayed ignition.

Safety: Turn off gas and power before adjusting electrodes.

• Inspect ignition and ionization electrodes: Check for cracks in ceramic insulators, burnt tips, or carbon tracking. Replace if damaged.
• Adjust electrode gap: Using the Fondital service manual, set the correct distance between ignition electrode and burner surface. Ensure the ionization electrode is fully in the flame path.
• Check grounding: Verify that the burner and chassis earth connections are tight and free of corrosion. Poor grounding can cause unstable flame detection.
• Ignition cable: Inspect the high‑voltage cable for cuts or burn marks. Replace if insulation is compromised.
• Control board: If all mechanical parts are correct and A06 persists, the ignition circuit on the electronic control board may be defective and should be tested and replaced by a qualified technician.