{"product_id":"suburban-525003-sail-switch-furnace-low-air-flow-switch-replaces-232261-sf-series","title":"Suburban 525003 Sail Switch – Furnace Low Air Flow Switch (Replaces 232261, SF Series)","description":"\u003ch2 data-section-id=\"53drpp\" data-start=\"255\" data-end=\"276\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"277\" data-end=\"486\"\u003eThe \u003cstrong data-start=\"281\" data-end=\"312\"\u003eSuburban 525003 Sail Switch\u003c\/strong\u003e (replaces part \u003cstrong data-start=\"328\" data-end=\"338\"\u003e232261\u003c\/strong\u003e) is a low air flow safety switch designed for a wide range of \u003cstrong data-start=\"401\" data-end=\"435\"\u003eSuburban SF series RV furnaces\u003c\/strong\u003e, including standard, F, Q, FQ, SH, and SFV models.\u003c\/p\u003e\n\u003cp data-start=\"488\" data-end=\"747\"\u003eThis switch ensures the blower is moving sufficient air before allowing ignition, preventing unsafe operation and protecting your furnace system. If your furnace blower runs but the burner does not ignite, the sail switch is one of the \u003cstrong data-start=\"724\" data-end=\"746\"\u003emost common causes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"749\" data-end=\"843\"\u003eReplacing a faulty sail switch can quickly restore proper furnace operation and reliable heat.\u003c\/p\u003e\n\u003chr data-start=\"845\" data-end=\"848\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"850\" data-end=\"867\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"868\" data-end=\"1319\"\u003e\n\u003cli data-section-id=\"gu0yax\" data-start=\"868\" data-end=\"934\"\u003eReplaces \u003cstrong data-start=\"879\" data-end=\"903\"\u003eSuburban part 232261\u003c\/strong\u003e (updated part number 525003)\u003c\/li\u003e\n\u003cli data-section-id=\"1mlthmw\" data-start=\"935\" data-end=\"996\"\u003eDesigned for \u003cstrong data-start=\"950\" data-end=\"994\"\u003eSuburban SF, SH, and SFV series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16o315q\" data-start=\"997\" data-end=\"1041\"\u003eLow air flow safety switch (sail switch)\u003c\/li\u003e\n\u003cli data-section-id=\"tnk1hr\" data-start=\"1042\" data-end=\"1084\"\u003eEnsures proper airflow before ignition\u003c\/li\u003e\n\u003cli data-section-id=\"gfghxh\" data-start=\"1085\" data-end=\"1140\"\u003eHelps prevent ignition failure and unsafe operation\u003c\/li\u003e\n\u003cli data-section-id=\"sza7hf\" data-start=\"1141\" data-end=\"1192\"\u003eCommon fix for “blower runs but no heat” issues\u003c\/li\u003e\n\u003cli data-section-id=\"e48szj\" data-start=\"1193\" data-end=\"1247\"\u003eDirect OEM replacement for proper fit and function\u003c\/li\u003e\n\u003cli data-section-id=\"1nj7rf6\" data-start=\"1248\" data-end=\"1272\"\u003eSingle switch design\u003c\/li\u003e\n\u003cli data-section-id=\"tkyouu\" data-start=\"1273\" data-end=\"1319\"\u003eDurable construction for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1321\" data-end=\"1324\"\u003e\n\u003ch2 data-section-id=\"1qhk4i3\" data-start=\"1326\" data-end=\"1345\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1346\" data-end=\"1577\"\u003e\n\u003cli data-section-id=\"1f1gtpj\" data-start=\"1346\" data-end=\"1369\"\u003ePart Number: 525003\u003c\/li\u003e\n\u003cli data-section-id=\"30lxjf\" data-start=\"1370\" data-end=\"1390\"\u003eReplaces: 232261\u003c\/li\u003e\n\u003cli data-section-id=\"pflcp1\" data-start=\"1391\" data-end=\"1442\"\u003eProduct Type: Sail switch \/ low air flow switch\u003c\/li\u003e\n\u003cli data-section-id=\"1guunh4\" data-start=\"1443\" data-end=\"1468\"\u003eConfiguration: Single\u003c\/li\u003e\n\u003cli data-section-id=\"17sp7x\" data-start=\"1469\" data-end=\"1519\"\u003eFunction: Airflow verification before ignition\u003c\/li\u003e\n\u003cli data-section-id=\"13ah77k\" data-start=\"1520\" data-end=\"1577\"\u003eApplication: Suburban SF, SH, and SFV series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1579\" data-end=\"1582\"\u003e\n\u003ch2 data-section-id=\"yzynuf\" data-start=\"1584\" data-end=\"1614\"\u003eCompatible Furnace Models\u003c\/h2\u003e\n\u003ch3 data-section-id=\"dmdozq\" data-start=\"1616\" data-end=\"1640\"\u003eSuburban SF Series\u003c\/h3\u003e\n\u003cul data-start=\"1641\" data-end=\"1729\"\u003e\n\u003cli data-section-id=\"120q7ti\" data-start=\"1641\" data-end=\"1682\"\u003eSF-20 \/ SF-25 \/ SF-30 \/ SF-35 \/ SF-42\u003c\/li\u003e\n\u003cli data-section-id=\"1er0qwg\" data-start=\"1683\" data-end=\"1729\"\u003eSF-20F \/ SF-25F \/ SF-30F \/ SF-35F \/ SF-42F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1731\" data-end=\"1734\"\u003e\n\u003ch3 data-section-id=\"h734zs\" data-start=\"1736\" data-end=\"1760\"\u003eSuburban SH Series\u003c\/h3\u003e\n\u003cul data-start=\"1761\" data-end=\"1781\"\u003e\n\u003cli data-section-id=\"151z4uw\" data-start=\"1761\" data-end=\"1770\"\u003eSH-42\u003c\/li\u003e\n\u003cli data-section-id=\"580cri\" data-start=\"1771\" data-end=\"1781\"\u003eSH-42F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1783\" data-end=\"1786\"\u003e\n\u003ch3 data-section-id=\"1jknp2r\" data-start=\"1788\" data-end=\"1822\"\u003eSuburban SF-Q \u0026amp; SF-FQ Series\u003c\/h3\u003e\n\u003cul data-start=\"1823\" data-end=\"1921\"\u003e\n\u003cli data-section-id=\"armk87\" data-start=\"1823\" data-end=\"1869\"\u003eSF-20Q \/ SF-25Q \/ SF-30Q \/ SF-35Q \/ SF-42Q\u003c\/li\u003e\n\u003cli data-section-id=\"7u0wch\" data-start=\"1870\" data-end=\"1921\"\u003eSF-20FQ \/ SF-25FQ \/ SF-30FQ \/ SF-35FQ \/ SF-42FQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1923\" data-end=\"1926\"\u003e\n\u003ch3 data-section-id=\"tsv4og\" data-start=\"1928\" data-end=\"1953\"\u003eSuburban SFV Series\u003c\/h3\u003e\n\u003cul data-start=\"1954\" data-end=\"2018\"\u003e\n\u003cli data-section-id=\"1cv182x\" data-start=\"1954\" data-end=\"1963\"\u003eSFV20\u003c\/li\u003e\n\u003cli data-section-id=\"1drlb4o\" data-start=\"1964\" data-end=\"1974\"\u003eSFV20Q\u003c\/li\u003e\n\u003cli data-section-id=\"1drqnlp\" data-start=\"1975\" data-end=\"1985\"\u003eSFV25Q\u003c\/li\u003e\n\u003cli data-section-id=\"1dpilg9\" data-start=\"1986\" data-end=\"1996\"\u003eSFV30Q\u003c\/li\u003e\n\u003cli data-section-id=\"1dpmegs\" data-start=\"1997\" data-end=\"2007\"\u003eSFV35Q\u003c\/li\u003e\n\u003cli data-section-id=\"1dvv9lo\" data-start=\"2008\" data-end=\"2018\"\u003eSFV42Q\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2020\" data-end=\"2023\"\u003e\n\u003ch2 data-section-id=\"r0ub25\" data-start=\"2025\" data-end=\"2058\"\u003eImportant Compatibility Note\u003c\/h2\u003e\n\u003cul data-start=\"2059\" data-end=\"2228\"\u003e\n\u003cli data-section-id=\"1suiz9q\" data-start=\"2059\" data-end=\"2127\"\u003eDesigned for a wide range of \u003cstrong data-start=\"2090\" data-end=\"2125\"\u003eSF, SH, and SFV series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1nhx97i\" data-start=\"2128\" data-end=\"2173\"\u003eVerify your furnace model before ordering\u003c\/li\u003e\n\u003cli data-section-id=\"1ka4vrg\" data-start=\"2174\" data-end=\"2228\"\u003eNot all Suburban furnaces use the same sail switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2230\" data-end=\"2233\"\u003e\n\u003ch2 data-section-id=\"v3w05w\" data-start=\"2235\" data-end=\"2280\"\u003eWhen Should You Replace the Sail Switch?\u003c\/h2\u003e\n\u003cp data-start=\"2281\" data-end=\"2335\"\u003eYou may need the 525003 sail switch if your furnace:\u003c\/p\u003e\n\u003cul data-start=\"2336\" data-end=\"2531\"\u003e\n\u003cli data-section-id=\"5l0agf\" data-start=\"2336\" data-end=\"2386\"\u003eBlower fan runs but the burner will not ignite\u003c\/li\u003e\n\u003cli data-section-id=\"y6bazl\" data-start=\"2387\" data-end=\"2429\"\u003eHas no spark or ignition after startup\u003c\/li\u003e\n\u003cli data-section-id=\"nbm24g\" data-start=\"2430\" data-end=\"2463\"\u003eCycles without producing heat\u003c\/li\u003e\n\u003cli data-section-id=\"1ajyas0\" data-start=\"2464\" data-end=\"2488\"\u003eWorks intermittently\u003c\/li\u003e\n\u003cli data-section-id=\"o5csiu\" data-start=\"2489\" data-end=\"2531\"\u003eHas dust or debris restricting airflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2533\" data-end=\"2609\"\u003eThe sail switch is one of the \u003cstrong data-start=\"2563\" data-end=\"2608\"\u003emost commonly replaced furnace components\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"2611\" data-end=\"2614\"\u003e\n\u003ch2 data-section-id=\"dslo8q\" data-start=\"2616\" data-end=\"2642\"\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cul data-start=\"2643\" data-end=\"2857\"\u003e\n\u003cli data-section-id=\"1rbj8zt\" data-start=\"2643\" data-end=\"2698\"\u003eEnsures safe furnace operation by verifying airflow\u003c\/li\u003e\n\u003cli data-section-id=\"jtqjtn\" data-start=\"2699\" data-end=\"2749\"\u003ePrevents ignition when airflow is insufficient\u003c\/li\u003e\n\u003cli data-section-id=\"2w83e3\" data-start=\"2750\" data-end=\"2794\"\u003eRestores proper furnace startup sequence\u003c\/li\u003e\n\u003cli data-section-id=\"x7u767\" data-start=\"2795\" data-end=\"2857\"\u003eSimple and cost-effective repair for common furnace issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2859\" data-end=\"2862\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2864\" data-end=\"2872\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"2874\" data-end=\"2948\"\u003e\u003cstrong data-start=\"2874\" data-end=\"2906\"\u003eWhat part does this replace?\u003c\/strong\u003e\u003cbr data-start=\"2906\" data-end=\"2909\"\u003eThis replaces \u003cstrong data-start=\"2923\" data-end=\"2947\"\u003eSuburban part 232261\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2950\" data-end=\"3051\"\u003e\u003cstrong data-start=\"2950\" data-end=\"2981\"\u003eWhat does a sail switch do?\u003c\/strong\u003e\u003cbr data-start=\"2981\" data-end=\"2984\"\u003eIt verifies that the blower is moving air before allowing ignition.\u003c\/p\u003e\n\u003cp data-start=\"3053\" data-end=\"3160\"\u003e\u003cstrong data-start=\"3053\" data-end=\"3087\"\u003eIs this a common failure part?\u003c\/strong\u003e\u003cbr data-start=\"3087\" data-end=\"3090\"\u003eYes, it is one of the most common causes of “blower runs but no heat”.\u003c\/p\u003e\n\u003cp data-start=\"3162\" data-end=\"3270\"\u003e\u003cstrong data-start=\"3162\" data-end=\"3199\"\u003eWill this fit NT series furnaces?\u003c\/strong\u003e\u003cbr data-start=\"3199\" data-end=\"3202\"\u003eNo, this switch is designed for \u003cstrong data-start=\"3234\" data-end=\"3269\"\u003eSF, SH, and SFV series furnaces\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3272\" data-end=\"3398\"\u003e\u003cstrong data-start=\"3272\" data-end=\"3302\"\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"3302\" data-end=\"3305\"\u003eInstallation is typically straightforward, but ensure power is disconnected before servicing.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47952032497905,"sku":null,"price":14.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/525003.jpg?v=1774384231","url":"https:\/\/rvfurnaceguys.com\/products\/suburban-525003-sail-switch-furnace-low-air-flow-switch-replaces-232261-sf-series","provider":"RV Furnace Guys","version":"1.0","type":"link"}