{"title":"Suburban Limit Switch","description":"","products":[{"product_id":"suburban-233484-furnace-limit-switch-replaces-233020-nt-16se-nt-20-series","title":"Suburban 233484 Furnace Limit Switch – Replaces 233020 (NT-16SE \/ NT-20 Series)","description":"\u003ch2 data-section-id=\"53drpp\" data-start=\"225\" data-end=\"246\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"247\" data-end=\"538\"\u003eThe \u003cstrong data-start=\"251\" data-end=\"291\"\u003eSuburban 233484 Furnace Limit Switch\u003c\/strong\u003e is a direct replacement safety component designed for select \u003cstrong data-start=\"353\" data-end=\"384\"\u003eSuburban NT series furnaces\u003c\/strong\u003e. This switch monitors internal furnace temperature and automatically shuts down the system if overheating occurs, protecting your RV furnace from damage.\u003c\/p\u003e\n\u003cp data-start=\"540\" data-end=\"787\"\u003eThis part \u003cstrong data-start=\"550\" data-end=\"585\"\u003esupersedes Suburban part 233020\u003c\/strong\u003e and is required for specific NT series models based on serial number ranges. Replacing a faulty limit switch can restore proper furnace operation and prevent unexpected shutdowns or overheating issues.\u003c\/p\u003e\n\u003chr data-start=\"789\" data-end=\"792\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"794\" data-end=\"811\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"812\" data-end=\"1185\"\u003e\n\u003cli data-section-id=\"13j3mcu\" data-start=\"812\" data-end=\"858\"\u003eDirect replacement for \u003cstrong data-start=\"837\" data-end=\"856\"\u003eSuburban 233020\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"m0urjw\" data-start=\"859\" data-end=\"914\"\u003eDesigned for select \u003cstrong data-start=\"881\" data-end=\"912\"\u003eSuburban NT series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17rzhs\" data-start=\"915\" data-end=\"970\"\u003eMonitors furnace temperature to prevent overheating\u003c\/li\u003e\n\u003cli data-section-id=\"rxjoax\" data-start=\"971\" data-end=\"1042\"\u003eAutomatically shuts off furnace if unsafe temperatures are detected\u003c\/li\u003e\n\u003cli data-section-id=\"1qu2gyl\" data-start=\"1043\" data-end=\"1096\"\u003eHelps restore safe and reliable furnace operation\u003c\/li\u003e\n\u003cli data-section-id=\"1at68co\" data-start=\"1097\" data-end=\"1140\"\u003eDirect-fit design for easy installation\u003c\/li\u003e\n\u003cli data-section-id=\"yn53v2\" data-start=\"1141\" data-end=\"1185\"\u003eOEM replacement for proper compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1187\" data-end=\"1190\"\u003e\n\u003ch2 data-section-id=\"1qhk4i3\" data-start=\"1192\" data-end=\"1211\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1212\" data-end=\"1391\"\u003e\n\u003cli data-section-id=\"1rwctqk\" data-start=\"1212\" data-end=\"1235\"\u003ePart Number: 233484\u003c\/li\u003e\n\u003cli data-section-id=\"4yjvcd\" data-start=\"1236\" data-end=\"1256\"\u003eReplaces: 233020\u003c\/li\u003e\n\u003cli data-section-id=\"1uxz2dq\" data-start=\"1257\" data-end=\"1295\"\u003eProduct Type: Furnace limit switch\u003c\/li\u003e\n\u003cli data-section-id=\"1qqfg83\" data-start=\"1296\" data-end=\"1346\"\u003eFunction: Overheat protection \/ safety shutoff\u003c\/li\u003e\n\u003cli data-section-id=\"ify82k\" data-start=\"1347\" data-end=\"1391\"\u003eApplication: Suburban NT series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1393\" data-end=\"1396\"\u003e\n\u003ch2 data-section-id=\"yzynuf\" data-start=\"1398\" data-end=\"1428\"\u003eCompatible Furnace Models\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1ppjrvv\" data-start=\"1430\" data-end=\"1479\"\u003eSuburban NT Series (Serial Number Specific)\u003c\/h3\u003e\n\u003cul data-start=\"1480\" data-end=\"1686\"\u003e\n\u003cli data-section-id=\"kimb66\" data-start=\"1480\" data-end=\"1521\"\u003eNT-16SE (\u003cstrong data-start=\"1491\" data-end=\"1518\"\u003eAbove Serial #094100427\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli data-section-id=\"bbpwyn\" data-start=\"1522\" data-end=\"1534\"\u003eNT-16SEQ\u003c\/li\u003e\n\u003cli data-section-id=\"ulgvnk\" data-start=\"1535\" data-end=\"1575\"\u003eNT-20S (\u003cstrong data-start=\"1545\" data-end=\"1572\"\u003eAbove Serial #093800203\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli data-section-id=\"wbiat6\" data-start=\"1576\" data-end=\"1619\"\u003eNT-20S-TC (\u003cstrong data-start=\"1589\" data-end=\"1616\"\u003eAbove Serial #093800203\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli data-section-id=\"k76isp\" data-start=\"1620\" data-end=\"1661\"\u003eNT-20SE (\u003cstrong data-start=\"1631\" data-end=\"1658\"\u003eAbove Serial #094000057\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli data-section-id=\"kwoh96\" data-start=\"1662\" data-end=\"1674\"\u003eNT-20SEQ\u003c\/li\u003e\n\u003cli data-section-id=\"z2mrzz\" data-start=\"1675\" data-end=\"1686\"\u003eNT-20SQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1688\" data-end=\"1691\"\u003e\n\u003ch2 data-section-id=\"r0ub25\" data-start=\"1693\" data-end=\"1726\"\u003eImportant Compatibility Note\u003c\/h2\u003e\n\u003cp data-start=\"1727\" data-end=\"1795\"\u003eThis limit switch is \u003cstrong data-start=\"1748\" data-end=\"1775\"\u003eserial number dependent\u003c\/strong\u003e for certain models.\u003c\/p\u003e\n\u003cul data-start=\"1797\" data-end=\"1974\"\u003e\n\u003cli data-section-id=\"1sei786\" data-start=\"1797\" data-end=\"1860\"\u003eVerify your furnace model and serial number before ordering\u003c\/li\u003e\n\u003cli data-section-id=\"1j0nhi6\" data-start=\"1861\" data-end=\"1922\"\u003eDesigned specifically for NT series furnaces listed above\u003c\/li\u003e\n\u003cli data-section-id=\"1ref0ki\" data-start=\"1923\" data-end=\"1974\"\u003eNot compatible with all Suburban furnace models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1976\" data-end=\"1979\"\u003e\n\u003ch2 data-section-id=\"1s25svq\" data-start=\"1981\" data-end=\"2027\"\u003eWhen Should You Replace the Limit Switch?\u003c\/h2\u003e\n\u003cp data-start=\"2028\" data-end=\"2083\"\u003eYou may need the 233484 limit switch if your furnace:\u003c\/p\u003e\n\u003cul data-start=\"2084\" data-end=\"2282\"\u003e\n\u003cli data-section-id=\"2j8vbc\" data-start=\"2084\" data-end=\"2127\"\u003eShuts off unexpectedly during operation\u003c\/li\u003e\n\u003cli data-section-id=\"o0qe7d\" data-start=\"2128\" data-end=\"2173\"\u003eOverheats or cycles on and off frequently\u003c\/li\u003e\n\u003cli data-section-id=\"17wi6bu\" data-start=\"2174\" data-end=\"2214\"\u003eWill not stay running after ignition\u003c\/li\u003e\n\u003cli data-section-id=\"dsjijo\" data-start=\"2215\" data-end=\"2282\"\u003eShows signs of safety shutdown or thermal protection activation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2284\" data-end=\"2358\"\u003eA faulty limit switch is a common cause of intermittent furnace operation.\u003c\/p\u003e\n\u003chr data-start=\"2360\" data-end=\"2363\"\u003e\n\u003ch2 data-section-id=\"dslo8q\" data-start=\"2365\" data-end=\"2391\"\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cul data-start=\"2392\" data-end=\"2584\"\u003e\n\u003cli data-section-id=\"5x0p9e\" data-start=\"2392\" data-end=\"2441\"\u003eProtects your furnace from overheating damage\u003c\/li\u003e\n\u003cli data-section-id=\"1szjyow\" data-start=\"2442\" data-end=\"2491\"\u003eEnsures safe operation of your heating system\u003c\/li\u003e\n\u003cli data-section-id=\"50y01r\" data-start=\"2492\" data-end=\"2535\"\u003eRestores proper cycling and performance\u003c\/li\u003e\n\u003cli data-section-id=\"iqp6dl\" data-start=\"2536\" data-end=\"2584\"\u003eCritical safety component in all RV furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2586\" data-end=\"2589\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2591\" data-end=\"2599\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"2601\" data-end=\"2696\"\u003e\u003cstrong data-start=\"2601\" data-end=\"2635\"\u003eDoes this replace part 233020?\u003c\/strong\u003e\u003cbr data-start=\"2635\" data-end=\"2638\"\u003eYes, the \u003cstrong data-start=\"2647\" data-end=\"2684\"\u003e233484 is the updated replacement\u003c\/strong\u003e for 233020.\u003c\/p\u003e\n\u003cp data-start=\"2698\" data-end=\"2821\"\u003e\u003cstrong data-start=\"2698\" data-end=\"2739\"\u003eWill this fit all NT series furnaces?\u003c\/strong\u003e\u003cbr data-start=\"2739\" data-end=\"2742\"\u003eNo, it only fits the \u003cstrong data-start=\"2763\" data-end=\"2820\"\u003especific models and serial number ranges listed above\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2823\" data-end=\"2974\"\u003e\u003cstrong data-start=\"2823\" data-end=\"2862\"\u003eWhy is the serial number important?\u003c\/strong\u003e\u003cbr data-start=\"2862\" data-end=\"2865\"\u003eSuburban updated components across production runs, so compatibility depends on your furnace’s serial number.\u003c\/p\u003e\n\u003cp data-start=\"2976\" data-end=\"3117\"\u003e\u003cstrong data-start=\"2976\" data-end=\"3006\"\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"3006\" data-end=\"3009\"\u003eInstallation is straightforward, but ensure power is disconnected and proper safety procedures are followed.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47949844938993,"sku":null,"price":11.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/233484.jpg?v=1774308322"},{"product_id":"suburban-525006-furnace-limit-switch-replaces-232504-sf-series-green-dot-160-120","title":"Suburban 525006 Furnace Limit Switch – Replaces 232504 (SF Series, Green Dot, 160°\/120°)","description":"\u003ch2 data-section-id=\"53drpp\" data-start=\"236\" data-end=\"257\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp data-start=\"258\" data-end=\"575\"\u003eThe \u003cstrong data-start=\"262\" data-end=\"302\"\u003eSuburban 525006 Furnace Limit Switch\u003c\/strong\u003e (formerly part \u003cstrong data-start=\"318\" data-end=\"328\"\u003e232504\u003c\/strong\u003e) is a critical safety component designed for a wide range of \u003cstrong data-start=\"390\" data-end=\"424\"\u003eSuburban SF series RV furnaces\u003c\/strong\u003e. This switch monitors internal furnace temperature and automatically shuts down the system if overheating occurs, protecting your furnace from damage.\u003c\/p\u003e\n\u003cp data-start=\"577\" data-end=\"804\"\u003eThis is one of the \u003cstrong data-start=\"596\" data-end=\"637\"\u003emost commonly replaced limit switches\u003c\/strong\u003e in Suburban furnaces, especially in SF-25, SF-30, and SF-35 models. It is identified by a \u003cstrong data-start=\"728\" data-end=\"752\"\u003egreen dot color code\u003c\/strong\u003e and operates at \u003cstrong data-start=\"769\" data-end=\"803\"\u003e160°F (open) and 120°F (close)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"806\" data-end=\"923\"\u003eReplacing a faulty limit switch can restore proper furnace cycling and prevent shutdown issues caused by overheating.\u003c\/p\u003e\n\u003chr data-start=\"925\" data-end=\"928\"\u003e\n\u003ch2 data-section-id=\"14at72t\" data-start=\"930\" data-end=\"947\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"948\" data-end=\"1374\"\u003e\n\u003cli data-section-id=\"p3kq14\" data-start=\"948\" data-end=\"1014\"\u003eReplaces \u003cstrong data-start=\"959\" data-end=\"983\"\u003eSuburban part 232504\u003c\/strong\u003e (updated part number 525006)\u003c\/li\u003e\n\u003cli data-section-id=\"18cd4e3\" data-start=\"1015\" data-end=\"1063\"\u003eDesigned for \u003cstrong data-start=\"1030\" data-end=\"1061\"\u003eSuburban SF series furnaces\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10iqp0n\" data-start=\"1064\" data-end=\"1122\"\u003e\n\u003cstrong data-start=\"1066\" data-end=\"1094\"\u003eGreen dot identification\u003c\/strong\u003e for correct part matching\u003c\/li\u003e\n\u003cli data-section-id=\"1mfq25s\" data-start=\"1123\" data-end=\"1175\"\u003eTemperature rating: \u003cstrong data-start=\"1145\" data-end=\"1173\"\u003e160°F open \/ 120°F close\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"68xy4c\" data-start=\"1176\" data-end=\"1234\"\u003eAutomatically shuts down furnace if overheating occurs\u003c\/li\u003e\n\u003cli data-section-id=\"1qu2gyl\" data-start=\"1235\" data-end=\"1288\"\u003eHelps restore safe and reliable furnace operation\u003c\/li\u003e\n\u003cli data-section-id=\"e48szj\" data-start=\"1289\" data-end=\"1343\"\u003eDirect OEM replacement for proper fit and function\u003c\/li\u003e\n\u003cli data-section-id=\"tswgjr\" data-start=\"1344\" data-end=\"1374\"\u003eSingle limit switch design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1376\" data-end=\"1379\"\u003e\n\u003ch2 data-section-id=\"1qhk4i3\" data-start=\"1381\" data-end=\"1400\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1401\" data-end=\"1652\"\u003e\n\u003cli data-section-id=\"1f1gnvm\" data-start=\"1401\" data-end=\"1424\"\u003ePart Number: 525006\u003c\/li\u003e\n\u003cli data-section-id=\"2yktsf\" data-start=\"1425\" data-end=\"1445\"\u003eReplaces: 232504\u003c\/li\u003e\n\u003cli data-section-id=\"1uxz2dq\" data-start=\"1446\" data-end=\"1484\"\u003eProduct Type: Furnace limit switch\u003c\/li\u003e\n\u003cli data-section-id=\"c1v4gv\" data-start=\"1485\" data-end=\"1551\"\u003eTemperature Rating:\n\u003cul data-start=\"1511\" data-end=\"1551\"\u003e\n\u003cli data-section-id=\"y9b9q3\" data-start=\"1511\" data-end=\"1529\"\u003eOpens at 160°F\u003c\/li\u003e\n\u003cli data-section-id=\"1ddcxfh\" data-start=\"1532\" data-end=\"1551\"\u003eCloses at 120°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vydrfg\" data-start=\"1552\" data-end=\"1581\"\u003eIdentification: Green dot\u003c\/li\u003e\n\u003cli data-section-id=\"1guunh4\" data-start=\"1582\" data-end=\"1607\"\u003eConfiguration: Single\u003c\/li\u003e\n\u003cli data-section-id=\"yigqpf\" data-start=\"1608\" data-end=\"1652\"\u003eApplication: Suburban SF series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1654\" data-end=\"1657\"\u003e\n\u003ch2 data-section-id=\"yzynuf\" data-start=\"1659\" data-end=\"1689\"\u003eCompatible Furnace Models\u003c\/h2\u003e\n\u003ch3 data-section-id=\"dmdozq\" data-start=\"1691\" data-end=\"1715\"\u003eSuburban SF Series\u003c\/h3\u003e\n\u003cul data-start=\"1716\" data-end=\"1745\"\u003e\n\u003cli data-section-id=\"1b25u1e\" data-start=\"1716\" data-end=\"1725\"\u003eSF-20\u003c\/li\u003e\n\u003cli data-section-id=\"1b283lf\" data-start=\"1726\" data-end=\"1735\"\u003eSF-30\u003c\/li\u003e\n\u003cli data-section-id=\"1b284hi\" data-start=\"1736\" data-end=\"1745\"\u003eSF-35\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"a8478t\" data-start=\"1747\" data-end=\"1773\"\u003eSuburban SF-F Series (\u003cstrong data-start=\"1806\" data-end=\"1833\"\u003eAbove Serial #921403895\u003c\/strong\u003e)\u003c\/h3\u003e\n\u003cul data-start=\"1774\" data-end=\"1836\"\u003e\n\u003cli data-section-id=\"1pc3vxt\" data-start=\"1774\" data-end=\"1784\"\u003eSF-25F\u003c\/li\u003e\n\u003cli data-section-id=\"1pe2w2d\" data-start=\"1785\" data-end=\"1795\"\u003eSF-30F\u003c\/li\u003e\n\u003cli data-section-id=\"1kfijjo\" data-start=\"1796\" data-end=\"1836\"\u003eSF-35F \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1wk1pi2\" data-start=\"1838\" data-end=\"1864\"\u003eSuburban SF-Q Series\u003c\/h3\u003e\n\u003cul data-start=\"1865\" data-end=\"1897\"\u003e\n\u003cli data-section-id=\"1pc3l2e\" data-start=\"1865\" data-end=\"1875\"\u003eSF-25Q\u003c\/li\u003e\n\u003cli data-section-id=\"1pe2hqa\" data-start=\"1876\" data-end=\"1886\"\u003eSF-30Q\u003c\/li\u003e\n\u003cli data-section-id=\"1pe1v3b\" data-start=\"1887\" data-end=\"1897\"\u003eSF-35Q\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"duc61o\" data-start=\"1899\" data-end=\"1926\"\u003eSuburban SF-FQ Series\u003c\/h3\u003e\n\u003cul data-start=\"1927\" data-end=\"1962\"\u003e\n\u003cli data-section-id=\"z8f39c\" data-start=\"1927\" data-end=\"1938\"\u003eSF-25FQ\u003c\/li\u003e\n\u003cli data-section-id=\"111gppg\" data-start=\"1939\" data-end=\"1950\"\u003eSF-30FQ\u003c\/li\u003e\n\u003cli data-section-id=\"110rald\" data-start=\"1951\" data-end=\"1962\"\u003eSF-35FQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1964\" data-end=\"1967\"\u003e\n\u003ch2 data-section-id=\"r0ub25\" data-start=\"1969\" data-end=\"2002\"\u003eImportant Compatibility Note\u003c\/h2\u003e\n\u003cul data-start=\"2003\" data-end=\"2192\"\u003e\n\u003cli data-section-id=\"p6c853\" data-start=\"2003\" data-end=\"2060\"\u003eSF-F models must be \u003cstrong data-start=\"2025\" data-end=\"2058\"\u003eabove Serial Number 921403895\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vmnluc\" data-start=\"2061\" data-end=\"2138\"\u003eConfirm the \u003cstrong data-start=\"2075\" data-end=\"2096\"\u003egreen dot marking\u003c\/strong\u003e on your existing switch before ordering\u003c\/li\u003e\n\u003cli data-section-id=\"7fdoap\" data-start=\"2139\" data-end=\"2192\"\u003eDesigned specifically for the models listed above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2194\" data-end=\"2197\"\u003e\n\u003ch2 data-section-id=\"1s25svq\" data-start=\"2199\" data-end=\"2245\"\u003eWhen Should You Replace the Limit Switch?\u003c\/h2\u003e\n\u003cp data-start=\"2246\" data-end=\"2301\"\u003eYou may need the 525006 limit switch if your furnace:\u003c\/p\u003e\n\u003cul data-start=\"2302\" data-end=\"2480\"\u003e\n\u003cli data-section-id=\"10f5sgd\" data-start=\"2302\" data-end=\"2338\"\u003eShuts off shortly after starting\u003c\/li\u003e\n\u003cli data-section-id=\"1ciizxp\" data-start=\"2339\" data-end=\"2371\"\u003eCycles on and off repeatedly\u003c\/li\u003e\n\u003cli data-section-id=\"618etd\" data-start=\"2372\" data-end=\"2418\"\u003eOverheats or blows cold air intermittently\u003c\/li\u003e\n\u003cli data-section-id=\"98k56j\" data-start=\"2419\" data-end=\"2444\"\u003eWill not stay running\u003c\/li\u003e\n\u003cli data-section-id=\"rdvlg2\" data-start=\"2445\" data-end=\"2480\"\u003eShows signs of thermal shutdown\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2482\" data-end=\"2564\"\u003eA faulty limit switch is one of the most common causes of furnace shutdown issues.\u003c\/p\u003e\n\u003chr data-start=\"2566\" data-end=\"2569\"\u003e\n\u003ch2 data-section-id=\"dslo8q\" data-start=\"2571\" data-end=\"2597\"\u003eWhy This Part Matters\u003c\/h2\u003e\n\u003cul data-start=\"2598\" data-end=\"2816\"\u003e\n\u003cli data-section-id=\"5x0p9e\" data-start=\"2598\" data-end=\"2647\"\u003eProtects your furnace from overheating damage\u003c\/li\u003e\n\u003cli data-section-id=\"h5d44k\" data-start=\"2648\" data-end=\"2700\"\u003eEnsures safe operation of your RV heating system\u003c\/li\u003e\n\u003cli data-section-id=\"i6x2nr\" data-start=\"2701\" data-end=\"2752\"\u003eRestores proper furnace cycling and performance\u003c\/li\u003e\n\u003cli data-section-id=\"13a4qzd\" data-start=\"2753\" data-end=\"2816\"\u003eOne of the most common failure points in SF series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2818\" data-end=\"2821\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2823\" data-end=\"2831\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"2833\" data-end=\"2907\"\u003e\u003cstrong data-start=\"2833\" data-end=\"2865\"\u003eWhat part does this replace?\u003c\/strong\u003e\u003cbr data-start=\"2865\" data-end=\"2868\"\u003eThis replaces \u003cstrong data-start=\"2882\" data-end=\"2906\"\u003eSuburban part 232504\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2909\" data-end=\"3036\"\u003e\u003cstrong data-start=\"2909\" data-end=\"2950\"\u003eHow do I identify the correct switch?\u003c\/strong\u003e\u003cbr data-start=\"2950\" data-end=\"2953\"\u003eLook for the \u003cstrong data-start=\"2966\" data-end=\"2990\"\u003egreen dot color code\u003c\/strong\u003e and match the temperature rating (160°\/120°).\u003c\/p\u003e\n\u003cp data-start=\"3038\" data-end=\"3170\"\u003e\u003cstrong data-start=\"3038\" data-end=\"3072\"\u003eWill this fit all SF furnaces?\u003c\/strong\u003e\u003cbr data-start=\"3072\" data-end=\"3075\"\u003eIt fits many SF models, but some require \u003cstrong data-start=\"3116\" data-end=\"3146\"\u003eserial number verification\u003c\/strong\u003e—especially SF-F models.\u003c\/p\u003e\n\u003cp data-start=\"3172\" data-end=\"3289\"\u003e\u003cstrong data-start=\"3172\" data-end=\"3204\"\u003eWhat does a limit switch do?\u003c\/strong\u003e\u003cbr data-start=\"3204\" data-end=\"3207\"\u003eIt shuts down the furnace if it overheats, preventing damage and unsafe operation.\u003c\/p\u003e\n\u003cp data-start=\"3291\" data-end=\"3415\"\u003e\u003cstrong data-start=\"3291\" data-end=\"3329\"\u003eIs this a common replacement part?\u003c\/strong\u003e\u003cbr data-start=\"3329\" data-end=\"3332\"\u003eYes, this is one of the \u003cstrong data-start=\"3356\" data-end=\"3414\"\u003emost commonly replaced Suburban furnace limit switches\u003c\/strong\u003e.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":47952018899185,"sku":null,"price":14.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/525006.webp?v=1774383357"},{"product_id":"suburban-525035-furnace-limit-switch-sf-42-sf-42f-sdh-2542","title":"Suburban 525035 Furnace Limit Switch – SF-42 \/ SF-42F \/ SDH-2542","description":"\u003ch3 data-section-id=\"nc3bgr\" data-start=\"110\" data-end=\"135\"\u003eProduct Description\u003c\/h3\u003e\n\u003cp data-start=\"136\" data-end=\"435\"\u003eThe \u003cstrong data-start=\"140\" data-end=\"180\"\u003eSuburban 525035 Furnace Limit Switch\u003c\/strong\u003e is a critical safety component designed to regulate internal furnace temperature and prevent overheating. This single limit switch opens at \u003cstrong data-start=\"321\" data-end=\"330\"\u003e195°F\u003c\/strong\u003e and resets at \u003cstrong data-start=\"345\" data-end=\"354\"\u003e155°F\u003c\/strong\u003e, helping protect your RV furnace from damage while maintaining proper operation.\u003c\/p\u003e\n\u003cp data-start=\"437\" data-end=\"729\"\u003eDesigned as an OEM replacement, this switch fits select \u003cstrong data-start=\"493\" data-end=\"542\"\u003eSuburban SF-42, SF-42F, and SDH-2542 furnaces\u003c\/strong\u003e. A failed limit switch can cause your furnace to shut down prematurely, cycle repeatedly, or fail to produce consistent heat—making this a key replacement part for restoring performance.\u003c\/p\u003e\n\u003chr data-start=\"731\" data-end=\"734\"\u003e\n\u003ch3 data-section-id=\"1v7iqwk\" data-start=\"736\" data-end=\"765\"\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul data-start=\"766\" data-end=\"962\"\u003e\n\u003cli data-section-id=\"4cx4s1\" data-start=\"766\" data-end=\"795\"\u003eOEM Suburban Part #525035\u003c\/li\u003e\n\u003cli data-section-id=\"1qplka\" data-start=\"796\" data-end=\"831\"\u003eOpens at 195°F, closes at 155°F\u003c\/li\u003e\n\u003cli data-section-id=\"vz2p1g\" data-start=\"832\" data-end=\"876\"\u003ePrevents overheating and internal damage\u003c\/li\u003e\n\u003cli data-section-id=\"1c79la2\" data-start=\"877\" data-end=\"926\"\u003eRestores proper furnace cycling and operation\u003c\/li\u003e\n\u003cli data-section-id=\"10xru0\" data-start=\"927\" data-end=\"962\"\u003eDurable, direct-fit replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"964\" data-end=\"967\"\u003e\n\u003ch3 data-section-id=\"rkevhk\" data-start=\"969\" data-end=\"988\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp data-start=\"989\" data-end=\"1034\"\u003eFits the following Suburban furnace models:\u003c\/p\u003e\n\u003cul data-start=\"1035\" data-end=\"1174\"\u003e\n\u003cli data-section-id=\"1b27f6e\" data-start=\"1035\" data-end=\"1044\"\u003eSF-42\u003c\/li\u003e\n\u003cli data-section-id=\"10ne70f\" data-start=\"1045\" data-end=\"1161\"\u003eSF-42F\n\u003cul data-start=\"1058\" data-end=\"1161\"\u003e\n\u003cli data-section-id=\"16fx532\" data-start=\"1058\" data-end=\"1108\"\u003eApplies to units below serial number 921403896\u003c\/li\u003e\n\u003cli data-section-id=\"t7uhf5\" data-start=\"1111\" data-end=\"1161\"\u003eApplies to units above serial number 921403895\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"897wmz\" data-start=\"1162\" data-end=\"1174\"\u003eSDH-2542\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1176\" data-end=\"1230\"\u003eAlways verify model and serial number before ordering.\u003c\/p\u003e\n\u003chr data-start=\"1232\" data-end=\"1235\"\u003e\n\u003ch3 data-section-id=\"12a2vhf\" data-start=\"1237\" data-end=\"1274\"\u003eCommon Problems This Part Fixes\u003c\/h3\u003e\n\u003cul data-start=\"1275\" data-end=\"1427\"\u003e\n\u003cli data-section-id=\"f0ukxu\" data-start=\"1275\" data-end=\"1308\"\u003eFurnace shuts off too quickly\u003c\/li\u003e\n\u003cli data-section-id=\"13sr24d\" data-start=\"1309\" data-end=\"1352\"\u003eFurnace overheats or trips safety limit\u003c\/li\u003e\n\u003cli data-section-id=\"1tsvqsx\" data-start=\"1353\" data-end=\"1392\"\u003eBurner cycles on and off repeatedly\u003c\/li\u003e\n\u003cli data-section-id=\"18tmuok\" data-start=\"1393\" data-end=\"1427\"\u003eInconsistent or no heat output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1429\" data-end=\"1432\"\u003e\n\u003ch3 data-section-id=\"17tjqny\" data-start=\"1434\" data-end=\"1455\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul data-start=\"1456\" data-end=\"1507\"\u003e\n\u003cli data-section-id=\"14qep2e\" data-start=\"1456\" data-end=\"1507\"\u003e(1) Suburban 525035 Furnace Limit Switch (Single)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1509\" data-end=\"1512\"\u003e\n\u003ch3 data-section-id=\"1d7m6hl\" data-start=\"1514\" data-end=\"1538\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul data-start=\"1539\" data-end=\"1733\"\u003e\n\u003cli data-section-id=\"bs9wk2\" data-start=\"1539\" data-end=\"1579\"\u003eDisconnect power before installation\u003c\/li\u003e\n\u003cli data-section-id=\"1fdb60k\" data-start=\"1580\" data-end=\"1644\"\u003eReplace in the same mounting position as the original switch\u003c\/li\u003e\n\u003cli data-section-id=\"oqjbks\" data-start=\"1645\" data-end=\"1681\"\u003eVerify proper wiring connections\u003c\/li\u003e\n\u003cli data-section-id=\"1d61l67\" data-start=\"1682\" data-end=\"1733\"\u003eProfessional installation recommended if unsure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1810\" data-end=\"1813\"\u003e\n\u003ch3 data-section-id=\"c4a8sj\" data-start=\"1815\" data-end=\"1825\"\u003eFAQs\u003c\/h3\u003e\n\u003cp data-start=\"1827\" data-end=\"1964\"\u003e\u003cstrong data-start=\"1827\" data-end=\"1867\"\u003eWhat does a furnace limit switch do?\u003c\/strong\u003e\u003cbr data-start=\"1867\" data-end=\"1870\"\u003eIt monitors internal temperature and shuts the furnace down if it overheats to prevent damage.\u003c\/p\u003e\n\u003cp data-start=\"1966\" data-end=\"2093\"\u003e\u003cstrong data-start=\"1966\" data-end=\"2010\"\u003eHow do I know if my limit switch is bad?\u003c\/strong\u003e\u003cbr data-start=\"2010\" data-end=\"2013\"\u003eCommon signs include short cycling, overheating shutdowns, or inconsistent heat.\u003c\/p\u003e\n\u003cp data-start=\"2095\" data-end=\"2219\"\u003e\u003cstrong data-start=\"2095\" data-end=\"2142\"\u003eIs this compatible with all SF-42 furnaces?\u003c\/strong\u003e\u003cbr data-start=\"2142\" data-end=\"2145\"\u003eIt fits specific serial number ranges—confirm your unit before purchasing.\u003c\/p\u003e\n\u003cp data-start=\"2221\" data-end=\"2368\"\u003e\u003cstrong data-start=\"2221\" data-end=\"2251\"\u003eCan I install this myself?\u003c\/strong\u003e\u003cbr data-start=\"2251\" data-end=\"2254\"\u003eYes, if you are comfortable with basic electrical components; otherwise, professional installation is recommended.\u003c\/p\u003e","brand":"RV Furnace Guys","offers":[{"title":"Default Title","offer_id":48060001911025,"sku":null,"price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4941\/0289\/files\/525035.webp?v=1776623740"}],"url":"https:\/\/rvfurnaceguys.com\/collections\/suburban-limit-switch.oembed","provider":"RV Furnace Guys","version":"1.0","type":"link"}