There are two types of electrode. 1) An Ignition electrodes & 2) A flame sensing electrode. The Ignition electrode creates the spark that starts the flame within the burner. The flame sensing electrode, monitors if there is a flame present in the burner. This is an important safety device, to ensure that the boiler is supply gas without a flame. This part is suitable for a range Worcester Greenstar 12i 24/28i Junior & 25/30i FSN & ErP Greenstar i System Boilers.
![Worcester Bosch Electrode Kit | 87161163810 [9922]](http://allgasltd.com/cdn/shop/products/Worcester_Electrode_kit_87161163810.png?v=1681815497&width=1445)