There is flame when the control is not telling the boiler to run. This is a serious safety issue as indicated by the illuminated red light and the word LOCKOUT flashing on the display. The boiler will not restart until a technician determines and repairs the cause and pushes RESET on the display. During this lockout fault, the pump will be on.
- Look into window. If there is flame, turn the gas off to the unit at the service valve and replace the gas valve.
- If the flame signal on the status menu is greater than 1.0 when the burner is not lit, replace the spark ignitor and the flame rectification probe.
- If the flame signal is not present after turning off the gas supply, check the gas valve electrical connection.
- Check for condensate backup. Repair condensate system as necessary. If condensate has partially filled the combustion chamber, the refractory wall may be damaged and should be replaced.
- Turn the gas on at the service valve after corrective action is taken.
- If the refractory wall falls against the rectifier probe, it may conduct the signal to ground, giving a false reading.
