{"product_id":"oem-lennox-low-ambient-control-sensor-55w73","title":"OEM Lennox Low Ambient Control Sensor — 55W73","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e55W73\u003c\/strong\u003e low ambient control (part reference K1SNSR33CS1) allows your Lennox condensing unit to run safely in cold outdoor temperatures by monitoring conditions and cycling the outdoor fan to maintain proper refrigerant head pressure. Low ambient controls are essential for applications requiring year-round cooling — such as server rooms and other continuous-load spaces — where the system must operate well below normal seasonal temperatures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include the outdoor unit tripping on low-pressure lockout in cool weather, the condenser fan failing to cycle, poor or lost cooling when outdoor temperatures drop, or ice forming on the coil. Sensor drift, moisture damage, and electrical faults are typical causes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the \u003cstrong\u003e55W73\u003c\/strong\u003e is matched to the pressure and temperature setpoints of your specific Lennox condenser. Generic controls may cycle the fan at incorrect thresholds, risking compressor damage or nuisance shutdowns. Install the factory-specified component to protect the compressor and keep low-ambient cooling reliable and efficient.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081079374195,"sku":"LNX-55W73","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-low-ambient-control-sensor-55w73","provider":"National HVAC Parts","version":"1.0","type":"link"}