{"product_id":"r68dd0014-mortex-pressure-switch","title":"R68DD0014 Mortex Pressure Switch","description":"\u003ch1\u003eR68DD0014 Mortex Pressure Switch \u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eR68DD0014\u003c\/strong\u003e is a factory‑specified \u003cstrong\u003e0.20\" WC pressure switch\u003c\/strong\u003e used in Mortex and Heat Controller furnaces. This switch monitors combustion‑air draft and closes only when the induced draft blower creates the correct negative pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIf the switch does not close, the furnace will lock out ignition to prevent unsafe burner operation. This OEM switch restores proper safety proving when the original becomes weak, stuck, or fails to close.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eThis confirms the R68DD0014 is \u003cstrong\u003eOEM‑specific\u003c\/strong\u003e and \u003cstrong\u003enot interchangeable\u003c\/strong\u003e with generic adjustable switches or higher WC ratings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cstrong\u003eCross‑Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eDirect OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eR68DD0014 — Mortex \/ Heat Controller 0.20\" WC Pressure Switch\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eRelated Mortex Pressure Switches (Not direct replacements)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eR68DD0015 — 0.25\" WC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eR68DD0016 — 0.30\" WC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eR68DD0017 — 0.35\" WC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eR68DD0018 — 0.40\" WC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnician Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSet Point:\u003c\/strong\u003e 0.20\" WC\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCircuit:\u003c\/strong\u003e Normally open — closes on pressure rise\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e Proves combustion‑air draft before ignition\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFailure Symptoms:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFurnace starts then shuts down\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eInducer runs but no ignition\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eError code for pressure switch open\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIntermittent ignition \/ short cycling\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eInstallation Tips:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVerify tubing is not cracked or blocked\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCheck inducer wheel for debris\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEnsure correct port orientation (NO → COM)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDo \u003cstrong\u003enot\u003c\/strong\u003e substitute higher WC switches — will cause lockouts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":45659422785602,"sku":"173-R68DD0014","price":64.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-10-17132815.png?v=1792268907","url":"https:\/\/hvacpartstore.com\/products\/r68dd0014-mortex-pressure-switch","provider":"HVACpartstore","version":"1.0","type":"link"}