Cause of error code A01

Ignition error

- Three consecutive unsuccessful ignition attempts.

Solution for error code A01

- Watch the igniter through the observation window.
- If no spark is present, check the spark electrode for the proper 3/16" gap.
- Remove any corrosion from the spark electrode with abrasive.
- If spark is present but no flame, check the gas supply to the boiler. Check for high or low pressure.
- If there is a flame, check the flame signal ignition log in the Installer Menu. If values for flame signal are less than 3.1 μA, check wiring connections and clean the harness connector at the control.
- Determine if gas valve is opening by monitoring gas pressure.
- Check gas presure.