{"product_id":"01-0842-oem-nordyne-replacement-sequencer-2-timings-3-switc","title":"01-0842 Heat Sequencer 2 timings 3 switches H1-110 C1-110","description":"\u003ch1\u003e01-0842 Heat Sequencer 2 timings 3 switches H1-110 C1-110\u003c\/h1\u003e\n\u003ch2\u003eWorks with Nordyne, Coleman  \u003c\/h2\u003e\n\u003ch2\u003eNordyne part number 621678R\u003c\/h2\u003e\n\u003ch2\u003e🔥 01-0842 Heat Sequencer — Dual-Timing, Triple-Switch, H1-110 \/ C1-110 Tower Combo\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOEM-Grade Control for Nordyne \u0026amp; Coleman Electric Furnaces\u003c\/strong\u003e Built to handle staged heating cycles with precision, this sequencer features two timing towers (tall \u0026amp; short) and three integral switches. Ideal for electric furnace systems requiring controlled heat element activation and fan delay logic.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003e\u003cstrong\u003eTypical Symptoms of a Failed Sequencer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHeat strips not energizing\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003cp\u003e\u003cstrong\u003eFurnace blowing cold air\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003cp\u003e\u003cstrong\u003eHeat staying on continuously\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003cp\u003e\u003cstrong\u003eBreakers tripping during heat operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e⚙️ Technical Specs:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e Heat element \u0026amp; blower sequencing\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSwitch Count:\u003c\/strong\u003e 3 internal switches\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTiming Configuration:\u003c\/strong\u003e 2 towers — H1-110 (main), C1-110 (companion)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMount Type:\u003c\/strong\u003e Plate with integrated towers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePower Source:\u003c\/strong\u003e AC-powered\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5886 lb\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e 621678R\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eVendor:\u003c\/strong\u003e HVAC Part Store\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCategory:\u003c\/strong\u003e HVAC Controls in Heating, Ventilation \u0026amp; Air Conditioning\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 id=\"part-num\"\u003eHeat sequencer consists of a tall tower and a short tower on one plate. 2 timings and 3 switches. The timings will come on (get hot) in 1-110 seconds (H1-110) and shut off (get cold) in 1-110 seconds (C1-110). The purpose of the timings is to turn on the heating elements in a sequence as to prevent a huge power surge which may blow a breaker.\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch5\u003e\u003cstrong\u003e  \u003c\/strong\u003e\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eClick to watch how the sequencer works   \u003ca href=\"https:\/\/youtu.be\/5YjL8eR5VJ0\"\u003ehttps:\/\/youtu.be\/5YjL8eR5VJ0\u003c\/a\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIf your electric furnace isn't putting out enough heat, it may be that the switches in your old sequencer aren't closing. Or if it feels like an element is not shutting off, a switch in your old sequencer may be stuck closed. Same can be said about the blower motor. If the motor doesn't turn on or shut off, it may be an issue with the first switch (M1-M2). Be sure to doublecheck the wiring diagram of your furnace as some models use the sequencer differently.\u003c\/p\u003e\n\u003cp\u003eOn a typical electric furnace, the blower motor is hooked to terminals M1 \u0026amp; M2 (perhaps referred to as H1 \u0026amp; H2 on other various sequencers). The heating elements are then hooked to M3-M4 and M5 -M6. 24V feeds the bottom (gold) terminals of the sequencer. \u003cspan style=\"background-color: #ffff00;\"\u003eWelded jumper bars connect the 24V from one tower to the next. If your application does not use these jumpers, simply twist them off with a pliers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot_2025-09-16_184501.png?v=1758074054\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eNot all the terminals of the sequencer may be used in your application. In some cases, you may need extra terminals. If that happens, included are extra terminal adapters to convert one terminal into two.\u003c\/p\u003e\n\u003cp\u003eClick \u003ca title=\"HERE\" href=\"https:\/\/youtu.be\/5YjL8eR5VJ0\"\u003eHERE\u003c\/a\u003e\u003cimg src=\"https:\/\/youtu.be\/5YjL8eR5VJ0\"\u003e to watch a how a sequencer works!  \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese sequencers are inexpensive and are ideal for replacing expensive OEM sequencers.  But keep in mind there is some slight differences in the number of terminals and some adapters have been included to compensate for that.  If you are not comfortable with that, then do not order.  Instead order the exact OEM replacement which we also stock.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAll our parts have a 1-year exchange warranty with us (no dealing with the manufacturer), so buy with confidence. We generally ship replacement parts the day you contact us. Also used in the Coleman 3400-818, Intertherm Sequencer 01-0842\u003c\/p\u003e\n\u003cp\u003ereplaces 621678R,\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003ch1\u003e\u003ca href=\"https:\/\/colemanhvacparts.com\/pages\/electric-furnace-problems-please-read?_pos=1\u0026amp;_sid=58e69fc5e\u0026amp;_ss=r\"\u003eELECTRIC FURNACE PROBLEMS (PLEASE READ)\u003c\/a\u003e\u003c\/h1\u003e\n\u003c\/div\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":13359414787,"sku":"621678R","price":48.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/images-2021-01-05T111632.529_e1b84b13-1766-4994-bdad-7dadb309ec54.jpg?v=1609870865","url":"https:\/\/hvacpartstore.com\/products\/01-0842-oem-nordyne-replacement-sequencer-2-timings-3-switc","provider":"HVACpartstore","version":"1.0","type":"link"}