{"product_id":"dewalt-n089178-control-module-genuine-oem-replacement-120v-soft-start-electronic-control-module","title":"DeWalt N089178 Control Module – Genuine OEM Replacement 120V Soft Start Electronic Control Module","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a564ce8-dd20-83ea-a458-fe6abd848766-13\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a564ce8-dd20-83ea-a458-fe6abd848766-13\" data-turn-id-container=\"request-6a564ce8-dd20-83ea-a458-fe6abd848766-13\" data-testid=\"conversation-turn-424\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"3235226a-b65d-4965-a0a2-7f55c2eca598\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"227\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e N089178\u003cbr data-start=\"24\" data-end=\"27\"\u003e\u003cstrong data-start=\"27\" data-end=\"40\"\u003eCategory:\u003c\/strong\u003e Power Tool Parts \u0026amp; Accessories → Polisher Parts → Electronic Control Modules\u003cbr data-start=\"117\" data-end=\"120\"\u003e\u003cstrong data-start=\"120\" data-end=\"129\"\u003eType:\u003c\/strong\u003e DeWalt N089178 Control Module – Genuine OEM Replacement 120V Soft Start Electronic Control Module\u003c\/p\u003e\n\u003chr data-start=\"229\" data-end=\"232\"\u003e\n\u003cp data-start=\"335\" data-end=\"1021\"\u003eThe \u003cstrong data-start=\"339\" data-end=\"372\"\u003eDeWalt N089178 Control Module\u003c\/strong\u003e is a genuine OEM replacement \u003cstrong data-start=\"402\" data-end=\"447\"\u003e120V electronic soft start control module\u003c\/strong\u003e designed for compatible \u003cstrong data-start=\"472\" data-end=\"507\"\u003eDeWalt variable-speed polishers\u003c\/strong\u003e. This module manages the tool's electrical startup sequence, providing a controlled soft start that gradually brings the motor up to operating speed while reducing startup torque and current draw. It also works with the tool's variable-speed control system to help ensure smooth motor operation. Manufactured to original equipment specifications, it provides a direct-fit replacement for failed or malfunctioning control modules, restoring dependable startup and performance.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1193\" data-end=\"1196\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1198\" data-end=\"1224\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1226\" data-end=\"1607\"\u003e\n\u003cli data-section-id=\"ffit0n\" data-start=\"1226\" data-end=\"1252\"\u003e\n\u003cstrong data-start=\"1228\" data-end=\"1244\"\u003ePart Number:\u003c\/strong\u003e N089178\u003c\/li\u003e\n\u003cli data-section-id=\"1platsi\" data-start=\"1253\" data-end=\"1290\"\u003eGenuine OEM DeWalt replacement part\u003c\/li\u003e\n\u003cli data-section-id=\"g1gtj6\" data-start=\"1291\" data-end=\"1346\"\u003eReplacement 120V electronic soft start control module\u003c\/li\u003e\n\u003cli data-section-id=\"pz1vos\" data-start=\"1347\" data-end=\"1382\"\u003eProvides controlled motor startup\u003c\/li\u003e\n\u003cli data-section-id=\"177yh80\" data-start=\"1383\" data-end=\"1442\"\u003eHelps reduce startup torque and electrical inrush current\u003c\/li\u003e\n\u003cli data-section-id=\"13qndi7\" data-start=\"1443\" data-end=\"1479\"\u003eSupports smooth motor acceleration\u003c\/li\u003e\n\u003cli data-section-id=\"atsmfj\" data-start=\"1480\" data-end=\"1526\"\u003eWorks with the variable-speed control system\u003c\/li\u003e\n\u003cli data-section-id=\"p6iksq\" data-start=\"1527\" data-end=\"1555\"\u003eDirect-fit OEM replacement\u003c\/li\u003e\n\u003cli data-section-id=\"fyhvnz\" data-start=\"1556\" data-end=\"1607\"\u003eManufactured to original equipment specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1609\" data-end=\"1612\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1614\" data-end=\"1641\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1643\" data-end=\"1667\"\u003e\u003cstrong data-start=\"1643\" data-end=\"1659\"\u003ePart Number:\u003c\/strong\u003e N089178\u003c\/p\u003e\n\u003cp data-start=\"1669\" data-end=\"1693\"\u003e\u003cstrong data-start=\"1669\" data-end=\"1686\"\u003eManufacturer:\u003c\/strong\u003e DeWalt\u003c\/p\u003e\n\u003cp data-start=\"1695\" data-end=\"1738\"\u003e\u003cstrong data-start=\"1695\" data-end=\"1712\"\u003eProduct Type:\u003c\/strong\u003e Electronic Control Module\u003c\/p\u003e\n\u003cp data-start=\"1740\" data-end=\"1770\"\u003e\u003cstrong data-start=\"1740\" data-end=\"1762\"\u003eOperating Voltage:\u003c\/strong\u003e 120V AC\u003c\/p\u003e\n\u003cp data-start=\"1772\" data-end=\"1823\"\u003e\u003cstrong data-start=\"1772\" data-end=\"1785\"\u003eFunction:\u003c\/strong\u003e Soft Start \/ Electronic Motor Control\u003c\/p\u003e\n\u003cp data-start=\"1825\" data-end=\"1865\"\u003e\u003cstrong data-start=\"1825\" data-end=\"1841\"\u003eApplication:\u003c\/strong\u003e Variable-Speed Polisher\u003c\/p\u003e\n\u003cp data-start=\"1867\" data-end=\"1884\"\u003e\u003cstrong data-start=\"1867\" data-end=\"1880\"\u003eOEM Part:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003cp data-start=\"1886\" data-end=\"1917\"\u003e\u003cstrong data-start=\"1886\" data-end=\"1899\"\u003eQuantity:\u003c\/strong\u003e Sold Individually\u003c\/p\u003e\n\u003chr data-start=\"1919\" data-end=\"1922\"\u003e\n\u003ch2 data-section-id=\"17z2fqi\" data-start=\"1924\" data-end=\"1950\"\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp data-start=\"1952\" data-end=\"2027\"\u003eThe \u003cstrong data-start=\"1956\" data-end=\"1989\"\u003eDeWalt N089178 Control Module\u003c\/strong\u003e fits compatible polishers, including:\u003c\/p\u003e\n\u003ch3 data-section-id=\"gjy67d\" data-start=\"2029\" data-end=\"2039\"\u003eDeWalt\u003c\/h3\u003e\n\u003cul data-start=\"2041\" data-end=\"2118\"\u003e\n\u003cli data-section-id=\"3a18e5\" data-start=\"2041\" data-end=\"2084\"\u003e\n\u003cstrong data-start=\"2043\" data-end=\"2054\"\u003eDWP849X\u003c\/strong\u003e 7\"\/9\" Variable-Speed Polisher\u003c\/li\u003e\n\u003cli data-section-id=\"mfa84a\" data-start=\"2085\" data-end=\"2101\"\u003e\u003cstrong data-start=\"2087\" data-end=\"2101\"\u003eDWP849X-B3\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"mf9i4b\" data-start=\"2102\" data-end=\"2118\"\u003e\u003cstrong data-start=\"2104\" data-end=\"2118\"\u003eDWP849X-BR\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2120\" data-end=\"2274\"\u003eAlways verify your tool model, type number, and original part number before ordering to ensure proper compatibility. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2276\" data-end=\"2279\"\u003e\n\u003ch2 data-section-id=\"1qrj3gq\" data-start=\"2281\" data-end=\"2314\"\u003eFunction of the Control Module\u003c\/h2\u003e\n\u003cp data-start=\"2316\" data-end=\"2362\"\u003eThe \u003cstrong data-start=\"2320\" data-end=\"2346\"\u003eN089178 Control Module\u003c\/strong\u003e is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2364\" data-end=\"2642\"\u003e\n\u003cli data-section-id=\"1y3tiew\" data-start=\"2364\" data-end=\"2405\"\u003eControl the motor's soft start sequence\u003c\/li\u003e\n\u003cli data-section-id=\"1efnzff\" data-start=\"2406\" data-end=\"2453\"\u003eGradually increase motor speed during startup\u003c\/li\u003e\n\u003cli data-section-id=\"175f8b8\" data-start=\"2454\" data-end=\"2488\"\u003eReduce electrical inrush current\u003c\/li\u003e\n\u003cli data-section-id=\"wursm4\" data-start=\"2489\" data-end=\"2537\"\u003eHelp minimize startup torque and tool movement\u003c\/li\u003e\n\u003cli data-section-id=\"fizl3w\" data-start=\"2538\" data-end=\"2579\"\u003eSupport smooth variable-speed operation\u003c\/li\u003e\n\u003cli data-section-id=\"13opvue\" data-start=\"2580\" data-end=\"2642\"\u003eRestore the polisher's original electronic control functions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2644\" data-end=\"2756\"\u003eUsing a genuine OEM replacement control module helps maintain reliable startup performance and smooth operation.\u003c\/p\u003e\n\u003chr data-start=\"2758\" data-end=\"2761\"\u003e\n\u003ch2 data-section-id=\"1cnbljb\" data-start=\"2763\" data-end=\"2800\"\u003eCommon Signs Replacement Is Needed\u003c\/h2\u003e\n\u003cp data-start=\"2802\" data-end=\"2843\"\u003eReplace the control module if you notice:\u003c\/p\u003e\n\u003cul data-start=\"2845\" data-end=\"3050\"\u003e\n\u003cli data-section-id=\"1ta01sb\" data-start=\"2845\" data-end=\"2877\"\u003eSoft start no longer functions\u003c\/li\u003e\n\u003cli data-section-id=\"1oobdp3\" data-start=\"2878\" data-end=\"2914\"\u003eTool starts abruptly at full speed\u003c\/li\u003e\n\u003cli data-section-id=\"ru77hx\" data-start=\"2915\" data-end=\"2940\"\u003ePolisher will not start\u003c\/li\u003e\n\u003cli data-section-id=\"fc8z7v\" data-start=\"2941\" data-end=\"2966\"\u003eIntermittent power loss\u003c\/li\u003e\n\u003cli data-section-id=\"1hqk8pd\" data-start=\"2967\" data-end=\"2997\"\u003eInconsistent motor operation\u003c\/li\u003e\n\u003cli data-section-id=\"lp6ol4\" data-start=\"2998\" data-end=\"3050\"\u003eVisible damage or failure of the electronic module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3052\" data-end=\"3211\"\u003eA failed control module can prevent proper startup and may cause erratic motor performance or complete loss of operation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3213\" data-end=\"3216\"\u003e\n\u003ch2 data-section-id=\"10va281\" data-start=\"3218\" data-end=\"3249\"\u003eInstallation \u0026amp; Service Notes\u003c\/h2\u003e\n\u003cp data-start=\"3251\" data-end=\"3318\"\u003e\u003cstrong data-start=\"3251\" data-end=\"3318\"\u003eDisconnect the polisher from the power source before servicing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3320\" data-end=\"3996\"\u003eRemove the housing screws and carefully separate the tool housing to access the electronic components. Disconnect the existing \u003cstrong data-start=\"3447\" data-end=\"3473\"\u003eN089178 Control Module\u003c\/strong\u003e from the wiring harness, noting the orientation and routing of all electrical connections. Install the new module in the same position, reconnect the wiring harness securely, and inspect the switch, carbon brushes, and wiring for signs of wear before reassembling the housing. After reassembly, test the polisher to verify proper soft start operation and smooth speed control. Installation typically requires a Phillips screwdriver and can generally be completed in \u003cstrong data-start=\"3940\" data-end=\"3957\"\u003e15–30 minutes\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3998\" data-end=\"4333\"\u003e\u003cstrong data-start=\"3998\" data-end=\"4012\"\u003eImportant:\u003c\/strong\u003e Always verify your tool model and original part number before ordering. If the tool still fails to operate after replacing the control module, inspect the switch, power cord, carbon brushes, and armature for additional electrical faults. Use only genuine OEM replacement parts to maintain factory performance and safety.\u003c\/p\u003e\n\u003chr data-start=\"4335\" data-end=\"4338\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4340\" data-end=\"4370\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4372\" data-end=\"4839\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"iukrae\" data-start=\"4372\" data-end=\"4435\"\u003eKeep motor ventilation openings clean to prevent overheating.\u003c\/li\u003e\n\u003cli data-section-id=\"bhzfcw\" data-start=\"4436\" data-end=\"4505\"\u003eInspect electrical wiring periodically for signs of wear or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"1jrx1gw\" data-start=\"4506\" data-end=\"4581\"\u003eReplace worn carbon brushes before excessive wear affects the commutator.\u003c\/li\u003e\n\u003cli data-section-id=\"1ttm6m4\" data-start=\"4582\" data-end=\"4638\"\u003eAvoid exposing the tool to excessive moisture or dust.\u003c\/li\u003e\n\u003cli data-section-id=\"93anmk\" data-start=\"4639\" data-end=\"4710\"\u003eCheck internal electrical connections whenever servicing the housing.\u003c\/li\u003e\n\u003cli data-section-id=\"1wn77lh\" data-start=\"4711\" data-end=\"4839\" data-is-last-node=\"\"\u003eUse genuine OEM replacement parts to maintain factory fit, reliable soft start performance, and long-term polisher durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DeWalt","offers":[{"title":"Default Title","offer_id":53573717852523,"sku":"N089178","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/N089178.webp?v=1784464873","url":"https:\/\/generalsprayers.com\/products\/dewalt-n089178-control-module-genuine-oem-replacement-120v-soft-start-electronic-control-module","provider":"GeneralSprayers","version":"1.0","type":"link"}