This is the Eccotemp ignition pack for the L10 model. The Eccotemp L10 ignition pack is what sparks and allows the heat exchanger to complete the ignition sequence. If the swing arm on the microswitch is opening but you are hearing no clicks, this is an idication that something is wrong with the ignition pack. Very easy to install/replace and comes complete with all wiring harnesses.
Customer assumes all liability when purchasing replacement parts.