{"product_id":"heatcraft-28910104-freezer-chiller-control-circuit-board-p51a","title":"Heatcraft 28910104 Freezer Chiller Control Circuit Board  #P51A","description":"\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThis product may contain shelf wear, have minor cosmetic imperfections, or have been tested. All our certified pre-owned products are backed by our return policy. We offer free shipping on all items. Please contact us for discounts or if you have any questions. We look forward to doing business with you!\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e• Manufacturer: Heatcraft Refrigeration\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e• Model Number: 28910104 • Firmware Version: V4.4 • Function: Freezer\/chiller control board with automatic superheat control, temperature control, and optimized defrost functions • Temperature Setpoint Range (Box Temp): -30°F to +70°F • Superheat Control Range: 4°F to 20°F • Defrost Control: Demand defrost enable and timing configurable • Temperature Sensors Supported: Defrost temperature, suction temperature, room temperature sensors (factory mounted) • Voltage: Standard control board power specifications (typically 120\/24V transformer support) • Minimum ON time: 2 minutes; Minimum OFF time: 4 minutes to prevent short cycling • Display Units: Selectable Fahrenheit or Celsius with LED indicator • Compatible with commercial refrigeration units, walk-in coolers, and industrial HVAC systems • Weight: Approximately 0.93 lbs (421.84 g) • Benefits: Improved system reliability, precise temperature control, enhanced energy efficiency and cost savings\u003c\/p\u003e","brand":"Heatcraft","offers":[{"title":"Default Title","offer_id":43673255837805,"sku":"15461","price":450.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0637\/2419\/1853\/files\/s-l800_82f327bf-f28a-4e2b-a5d9-af66d7f64204.jpg?v=1763352486","url":"https:\/\/willardshvacsupply.com\/products\/heatcraft-28910104-freezer-chiller-control-circuit-board-p51a","provider":"Willard's HVAC Supply","version":"1.0","type":"link"}