{"product_id":"icm291-two-speed-furnace-control-board-carrier-lh33wp003a-replacement-208-230-vac-copy","title":"ICM291 Two-Speed Furnace Control Board | Carrier LH33WP003A Replacement | 208\/230 VAC","description":"\u003ch1\u003eA Reliable 2-Speed Solution for Carrier, Bryant, \u0026amp; Payne Furnaces:\u003c\/h1\u003e\n\u003cp\u003eIs your high-efficiency furnace experiencing ignition lockouts or blower motor failures? The ICM291 is a robust, microprocessor-based control board designed as a direct, form, fit, and functional replacement for specific Carrier, Bryant, and Payne DSI (Direct Spark Ignition) systems operating on 208\/230 VAC line voltage. This USA-made board manages all aspects of your system, including the two-speed blower motors and spark ignitor, ensuring safe and efficient operation. ICM 291 also monitors for safety issues like flame sensing and lockout. It features a status LED for fault diagnostics and is compatible with both natural and LP gas. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy the ICM291 is the Right Choice for Your Repair: \u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSI Technology:\u003c\/strong\u003e Manages the entire Direct Spark Ignition sequence, from pre-purge timing to flame sensing and lockout monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Voltage Support:\u003c\/strong\u003e Designed specifically for 208\/230 VAC line voltage applications (not 115V systems).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Speed Motor Control:\u003c\/strong\u003e Features dedicated outputs for both heating (low speed) and cooling (high speed) blower motors, as well as the combustion motor hall effect sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Diagnostics:\u003c\/strong\u003e An onboard status LED provides clear, flashing fault codes to simplify troubleshooting and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Safety Lockout:\u003c\/strong\u003e Includes a robust 100% gas shutoff safety feature and manual reset lockout to prevent hazardous conditions. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eComprehensive Cross-Reference Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe ICM291 is a direct functional replacement for the following part numbers: \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCarrier \/ Bryant \/ Payne: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLH33WP003A\u003c\/li\u003e\n\u003cli\u003eLH33WP003 \u003c\/li\u003e\n\u003cli\u003e1171166\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Direct Spark Ignition (DSI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Voltage:\u003c\/strong\u003e 208\/230 VAC, 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Voltage:\u003c\/strong\u003e 24 VAC (18-30 VAC), 60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Purge Time: \u003c\/strong\u003e45 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrial for Ignition:\u003c\/strong\u003e 5 seconds ignition activation, 2 seconds flame establishing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-Purge Time:\u003c\/strong\u003e 45 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetry Period: \u003c\/strong\u003eEvery 20 seconds for 15 minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLockout: \u003c\/strong\u003eManual reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-Purge:\u003c\/strong\u003e 45 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower: \u003c\/strong\u003eRT and C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermostat Interface:\u003c\/strong\u003e R,W, and G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Switches:\u003c\/strong\u003e RS, LS, and CS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temp:\u003c\/strong\u003e -40°F to 176°F (-40°C to 75°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 3.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.875\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth: \u003c\/strong\u003e7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength: \u003c\/strong\u003e5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003e\n\u003cstrong\u003ePro-Tip: Verify Your Voltage First\u003c\/strong\u003e\u003cbr\u003eBefore purchasing the ICM291, look at the wiring diagram inside your furnace access panel to confirm you have 208\/230 VAC coming in. Installing this board in a standard 115 VAC system will cause immediate failure. This board is specifically for DSI (Direct Spark Ignition) Carrier systems that use higher line voltage.\u003c\/h5\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HVAC Depot","offers":[{"title":"Default Title","offer_id":52754948391275,"sku":"ICM291","price":522.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/ICP291_e68d6249-617d-4913-aa55-304b6b79c329.jpg?v=1769202751","url":"https:\/\/tophvacparts.com\/products\/icm291-two-speed-furnace-control-board-carrier-lh33wp003a-replacement-208-230-vac-copy","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}