Display shows A06; ignition attempts may be noisy or irregular, with delayed flame establishment.

Safety: Isolate power and gas before accessing the burner compartment. Only qualified personnel should adjust combustion settings.

Steps:

• Check electrode position: Compare the ignition electrode position and gap to the Ferroli service manual. If visibly misaligned or bent, it should be adjusted or replaced by a technician.
• Clean burner and venturi: Remove loose dust and debris from the burner and air intake area with a soft brush and vacuum. Do not use compressed air inside the combustion chamber.
• Check air inlet (for room-sealed models): Ensure the air intake section of the concentric flue is not blocked externally.
• Reset and test: Restore power and gas, reset the unit, and observe ignition. If ignition remains weak or delayed, further electrical and gas pressure tests are required.

Professional help: A technician should test ignition transformer output, verify gas pressures, and replace the ignition assembly or gas valve if necessary.