{"product_id":"oem-lennox-sequencer-time-delay-relay-72f83","title":"OEM Lennox Sequencer (Time-Delay Relay) — 72F83","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e72F83\u003c\/strong\u003e sequencer is a time-delay relay that staggers the energizing of electric heating elements in your Lennox furnace or air handler. By bringing heat strips online in sequence rather than all at once, it prevents a large inrush current surge, protects the electrical circuit, and delivers smooth, even heat output.\u003c\/p\u003e\u003cp\u003eWhen a sequencer fails, common symptoms include no heat or insufficient heat, elements that never energize, a breaker that trips on startup, or heat strips that stay on after the call for heat ends. A stuck-open contact leaves elements cold, while a stuck-closed contact can keep them energized and create a safety concern.\u003c\/p\u003e\u003cp\u003eInstalling the OEM Lennox \u003cstrong\u003e72F83\u003c\/strong\u003e guarantees the correct timing curve, contact ratings, and coil characteristics your system relies on for safe staged heating. Generic substitutes with different delay times or amperage ratings can cause nuisance breaker trips or premature element burnout. The factory-matched part restores reliable, code-compliant electric heat operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081096905075,"sku":"LNX-72F83","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-sequencer-3stage-LNX-72F83.jpg?v=1783763507","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-sequencer-time-delay-relay-72f83","provider":"National HVAC Parts","version":"1.0","type":"link"}