Electrodes

The Flame Rectification Electrode, Ionisation Electrode or Flame Detection Electrode The Ignition electrode makes the spark that begins combustion within the burner The flame sensing electrodes are responsible for detecting whether there is a flame present in the burner. This is important as if the flame is not detected the boiler knows to reattempt ignition if for any reason the flame was to extinguish the electrode would detect this and send a signal to the PCB which in turn would stop gas being injected into the burner.