{"product_id":"suburban-233383-sail-switch-furnace-low-air-flow-switch-replaces-233070-sh-35-p-40s","title":"Suburban 233383 Sail Switch – Furnace Low Air Flow Switch (Replaces 233070, SH-35 \/ P-40S)","description":"\u003ch2 data-section-id=\"53drpp\" data-start=\"261\" data-end=\"282\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"283\" data-end=\"573\"\u003eThe \u003cstrong data-start=\"287\" data-end=\"318\"\u003eSuburban 233383 Sail Switch\u003c\/strong\u003e (formerly part \u003cstrong data-start=\"334\" data-end=\"344\"\u003e233070\u003c\/strong\u003e) is a low air flow safety switch designed for select \u003cstrong data-start=\"398\" data-end=\"438\"\u003eSuburban SH and P series RV furnaces\u003c\/strong\u003e. This switch ensures the blower is moving sufficient air before allowing ignition, helping protect your furnace from unsafe operation.\u003c\/p\u003e\n\u003cp data-start=\"575\" data-end=\"782\"\u003eIf your furnace blower runs but the burner will not ignite, the sail switch is one of the \u003cstrong data-start=\"665\" data-end=\"687\"\u003emost common causes\u003c\/strong\u003e. Replacing a faulty sail switch can quickly restore proper furnace function and reliable heat.\u003c\/p\u003e\n\u003chr data-start=\"784\" data-end=\"787\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"789\" data-end=\"806\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"807\" data-end=\"1258\"\u003e\n\u003cli data-section-id=\"1cg3k75\" data-start=\"807\" data-end=\"873\"\u003eReplaces \u003cstrong data-start=\"818\" data-end=\"842\"\u003eSuburban part 233070\u003c\/strong\u003e (updated part number 233383)\u003c\/li\u003e\n\u003cli data-section-id=\"1blgqgv\" data-start=\"874\" data-end=\"935\"\u003eDesigned for \u003cstrong data-start=\"889\" data-end=\"933\"\u003eSuburban SH-35 and P-40S series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16o315q\" data-start=\"936\" data-end=\"980\"\u003eLow air flow safety switch (sail switch)\u003c\/li\u003e\n\u003cli data-section-id=\"tnk1hr\" data-start=\"981\" data-end=\"1023\"\u003eEnsures proper airflow before ignition\u003c\/li\u003e\n\u003cli data-section-id=\"gfghxh\" data-start=\"1024\" data-end=\"1079\"\u003eHelps prevent ignition failure and unsafe operation\u003c\/li\u003e\n\u003cli data-section-id=\"sza7hf\" data-start=\"1080\" data-end=\"1131\"\u003eCommon fix for “blower runs but no heat” issues\u003c\/li\u003e\n\u003cli data-section-id=\"e48szj\" data-start=\"1132\" data-end=\"1186\"\u003eDirect OEM replacement for proper fit and function\u003c\/li\u003e\n\u003cli data-section-id=\"1nj7rf6\" data-start=\"1187\" data-end=\"1211\"\u003eSingle switch design\u003c\/li\u003e\n\u003cli data-section-id=\"tkyouu\" data-start=\"1212\" data-end=\"1258\"\u003eDurable construction for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1260\" data-end=\"1263\"\u003e\n\u003ch2 data-section-id=\"1qhk4i3\" data-start=\"1265\" data-end=\"1284\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1285\" data-end=\"1509\"\u003e\n\u003cli data-section-id=\"1rzxamk\" data-start=\"1285\" data-end=\"1308\"\u003ePart Number: 233383\u003c\/li\u003e\n\u003cli data-section-id=\"4yeivc\" data-start=\"1309\" data-end=\"1329\"\u003eReplaces: 233070\u003c\/li\u003e\n\u003cli data-section-id=\"pflcp1\" data-start=\"1330\" data-end=\"1381\"\u003eProduct Type: Sail switch \/ low air flow switch\u003c\/li\u003e\n\u003cli data-section-id=\"1guunh4\" data-start=\"1382\" data-end=\"1407\"\u003eConfiguration: Single\u003c\/li\u003e\n\u003cli data-section-id=\"17sp7x\" data-start=\"1408\" data-end=\"1458\"\u003eFunction: Airflow verification before ignition\u003c\/li\u003e\n\u003cli data-section-id=\"1rmxkjq\" data-start=\"1459\" data-end=\"1509\"\u003eApplication: Suburban SH and P series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1511\" data-end=\"1514\"\u003e\n\u003ch2 data-section-id=\"yzynuf\" data-start=\"1516\" data-end=\"1546\"\u003eCompatible Furnace Models\u003c\/h2\u003e\n\u003ch3 data-section-id=\"h734zs\" data-start=\"1548\" data-end=\"1572\"\u003eSuburban SH Series\u003c\/h3\u003e\n\u003cul data-start=\"1573\" data-end=\"1593\"\u003e\n\u003cli data-section-id=\"1522tq0\" data-start=\"1573\" data-end=\"1582\"\u003eSH-35\u003c\/li\u003e\n\u003cli data-section-id=\"5bfjum\" data-start=\"1583\" data-end=\"1593\"\u003eSH-35F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1rzwksj\" data-start=\"1595\" data-end=\"1618\"\u003eSuburban P Series\u003c\/h3\u003e\n\u003cul data-start=\"1619\" data-end=\"1628\"\u003e\n\u003cli data-section-id=\"au2si\" data-start=\"1619\" data-end=\"1628\"\u003eP-40S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1630\" data-end=\"1633\"\u003e\n\u003ch2 data-section-id=\"r0ub25\" data-start=\"1635\" data-end=\"1668\"\u003eImportant Compatibility Note\u003c\/h2\u003e\n\u003cul data-start=\"1669\" data-end=\"1829\"\u003e\n\u003cli data-section-id=\"1haolpf\" data-start=\"1669\" data-end=\"1734\"\u003eDesigned specifically for \u003cstrong data-start=\"1697\" data-end=\"1732\"\u003eSH-35, SH-35F, and P-40S models\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1nhx97i\" data-start=\"1735\" data-end=\"1780\"\u003eVerify your furnace model before ordering\u003c\/li\u003e\n\u003cli data-section-id=\"ntit9n\" data-start=\"1781\" data-end=\"1829\"\u003eNot compatible with SF or NT series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1831\" data-end=\"1834\"\u003e\n\u003ch2 data-section-id=\"v3w05w\" data-start=\"1836\" data-end=\"1881\"\u003eWhen Should You Replace the Sail Switch?\u003c\/h2\u003e\n\u003cp data-start=\"1882\" data-end=\"1936\"\u003eYou may need the 233383 sail switch if your furnace:\u003c\/p\u003e\n\u003cul data-start=\"1937\" data-end=\"2132\"\u003e\n\u003cli data-section-id=\"5l0agf\" data-start=\"1937\" data-end=\"1987\"\u003eBlower fan runs but the burner will not ignite\u003c\/li\u003e\n\u003cli data-section-id=\"y6bazl\" data-start=\"1988\" data-end=\"2030\"\u003eHas no spark or ignition after startup\u003c\/li\u003e\n\u003cli data-section-id=\"nbm24g\" data-start=\"2031\" data-end=\"2064\"\u003eCycles without producing heat\u003c\/li\u003e\n\u003cli data-section-id=\"1ajyas0\" data-start=\"2065\" data-end=\"2089\"\u003eWorks intermittently\u003c\/li\u003e\n\u003cli data-section-id=\"o5csiu\" data-start=\"2090\" data-end=\"2132\"\u003eHas dust or debris restricting airflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2134\" data-end=\"2210\"\u003eThe sail switch is one of the \u003cstrong data-start=\"2164\" data-end=\"2209\"\u003emost commonly replaced furnace components\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"2212\" data-end=\"2215\"\u003e\n\u003ch2 data-section-id=\"dslo8q\" data-start=\"2217\" data-end=\"2243\"\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cul data-start=\"2244\" data-end=\"2458\"\u003e\n\u003cli data-section-id=\"1rbj8zt\" data-start=\"2244\" data-end=\"2299\"\u003eEnsures safe furnace operation by verifying airflow\u003c\/li\u003e\n\u003cli data-section-id=\"jtqjtn\" data-start=\"2300\" data-end=\"2350\"\u003ePrevents ignition when airflow is insufficient\u003c\/li\u003e\n\u003cli data-section-id=\"2w83e3\" data-start=\"2351\" data-end=\"2395\"\u003eRestores proper furnace startup sequence\u003c\/li\u003e\n\u003cli data-section-id=\"x7u767\" data-start=\"2396\" data-end=\"2458\"\u003eSimple and cost-effective repair for common furnace issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2460\" data-end=\"2463\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2465\" data-end=\"2473\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"2475\" data-end=\"2549\"\u003e\u003cstrong data-start=\"2475\" data-end=\"2507\"\u003eWhat part does this replace?\u003c\/strong\u003e\u003cbr data-start=\"2507\" data-end=\"2510\"\u003eThis replaces \u003cstrong data-start=\"2524\" data-end=\"2548\"\u003eSuburban part 233070\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2551\" data-end=\"2652\"\u003e\u003cstrong data-start=\"2551\" data-end=\"2582\"\u003eWhat does a sail switch do?\u003c\/strong\u003e\u003cbr data-start=\"2582\" data-end=\"2585\"\u003eIt verifies that the blower is moving air before allowing ignition.\u003c\/p\u003e\n\u003cp data-start=\"2654\" data-end=\"2761\"\u003e\u003cstrong data-start=\"2654\" data-end=\"2688\"\u003eIs this a common failure part?\u003c\/strong\u003e\u003cbr data-start=\"2688\" data-end=\"2691\"\u003eYes, it is one of the most common causes of “blower runs but no heat”.\u003c\/p\u003e\n\u003cp data-start=\"2763\" data-end=\"2883\"\u003e\u003cstrong data-start=\"2763\" data-end=\"2799\"\u003eWill this fit SF or NT furnaces?\u003c\/strong\u003e\u003cbr data-start=\"2799\" data-end=\"2802\"\u003eNo, this switch is designed specifically for \u003cstrong data-start=\"2847\" data-end=\"2882\"\u003eSH-35 and P-40S series furnaces\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2885\" data-end=\"3011\"\u003e\u003cstrong data-start=\"2885\" data-end=\"2915\"\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"2915\" data-end=\"2918\"\u003eInstallation is typically straightforward, but ensure power is disconnected before servicing.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47952037642481,"sku":null,"price":12.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/233383.jpg?v=1774384443","url":"https:\/\/rvfurnaceguys.com\/products\/suburban-233383-sail-switch-furnace-low-air-flow-switch-replaces-233070-sh-35-p-40s","provider":"RV Furnace Guys","version":"1.0","type":"link"}