Flame failure.
- Flame failures have exceeded the maximum allowed.
- Check the burner flame signal at high and low fire. If it is less than 5.0 μA, clean the flame sensor. If the problem persists, change the sensor.
- If the flame signal is above 5.0 μA, check for possible wind gusts while the boiler is on low fire. If there is indication of this issue, increase the minimum fan speed to prevent further occurances.
