Carrier LH33ZS004 Furnace IgnitorIGNITOR-4-1/2" LEADS REPLACES LH33ZS002, LH33ZS003, IGN26The igniter is a “glow bar” type silicon carbide unit. It isenergized whenever there is a call for heat and the red"IGNITER" light on the boiler control is lit. After the igniter isswitched off and the boiler continues to run, the igniter functionsas a flame sensor for the boiler control.If the ignitor fails and must be replaced, always install a newigniter gasket with the replacement igniter.CAUTION: Ignitor gets hot.
