{"product_id":"icp-hot-surface-igniter-for-wpg4604090rkb1-silicon-nitride-hsi-ships-today-1","title":"ICP Hot Surface Igniter for WPG4604090RKB1 — Silicon Nitride HSI | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM hot surface igniter is the ignition source for the ICP\/Tempstar\/Heil WPG4604090RKB1 packaged gas unit. It replaces OEM part numbers 1186861 (control board igniter) and 1177663 (ignitor). The silicon nitride element heats to roughly 2,000°F when the control board energizes it, lighting the burner gas on each heat call. When an igniter cracks, develops hot spots, or loses resistance, the furnace will fail to light, lock out after several trial-for-ignition attempts, or short-cycle. A 120V hot surface igniter is one of the most common no-heat failure points on packaged gas equipment.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003e1186861, 1177663\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHot Surface Igniter (HSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElement\u003c\/td\u003e\n\u003ctd\u003eSilicon Nitride\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWPG4604090RKB1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDesigned for the ICP WPG4604090RKB1 packaged gas\/electric unit and shared-platform Tempstar, Heil, and Comfortmaker WPG-series furnaces using the same ignition control. Always confirm your existing igniter part number before ordering.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the unit disconnect and verify zero voltage with a multimeter. Shut off the gas supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the burner compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photo the igniter bracket and wire routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter harness, remove the mounting screw, and lift the old igniter out without touching the ceramic element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter (handle the element by the ceramic base only), reseat the bracket, and reconnect the harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, start a heat call, and confirm the igniter glows and the burners light.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace clicks and tries to start but never lights\u003c\/li\u003e\n\u003cli\u003eVisible cracks, blisters, or breaks in the ceramic element\u003c\/li\u003e\n\u003cli\u003eIgnition lockout after 3 trial attempts\u003c\/li\u003e\n\u003cli\u003eNo glow when the igniter should be energized\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63027206488435,"sku":"1186861","price":44.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047677116787,"sku":"1186861-GEN","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-nitride-1186861.jpg?v=1782893326","url":"https:\/\/nationalhvacparts.com\/products\/icp-hot-surface-igniter-for-wpg4604090rkb1-silicon-nitride-hsi-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}