{"product_id":"trane-21c140501g45-defrost-control-circuit-board","title":"Trane 21C140501G45 Defrost Control Circuit Board","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"754\"\u003eThe Trane American Standard 21C140501G45 (CNT05001) defrost control \u003ca href=\"https:\/\/plgautomation.com\/collections\/plcs-more\"\u003ecircuit board\u003c\/a\u003e is used in Trane and American Standard heat pump systems to manage automatic defrost cycles, monitor outdoor coil conditions, and control compressor, reversing valve, and outdoor fan operation for efficient heating performance. Commonly installed in residential and light commercial heat pumps requiring an OEM defrost control board. HVAC service technicians and maintenance personnel use this control board for replacement, repair, retrofit, and restoration of heat pump defrost control systems. The CNT05001 board supersedes several earlier Trane defrost control boards and eliminates the older T1 terminal design. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"756\" data-end=\"773\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"775\" data-end=\"1272\"\u003eThe Trane American Standard 21C140501G45 defrost control circuit board is designed to monitor outdoor coil temperature and system operating conditions, initiating defrost cycles only when required to maintain heating efficiency and prevent frost accumulation. It is commonly used in residential homes, commercial buildings, heat pump split systems, and light commercial HVAC installations where reliable defrost control and equipment protection are essential. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1274\" data-end=\"1303\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1305\" data-end=\"2157\"\u003e• Manufacturer Part Number (MPN): 21C140501G45\u003cbr data-start=\"1351\" data-end=\"1354\"\u003e• Service Part Number: CNT05001\u003cbr data-start=\"1385\" data-end=\"1388\"\u003e• Manufacturer: Trane \/ American Standard\u003cbr data-start=\"1429\" data-end=\"1432\"\u003e• Product Type: Defrost Control Circuit Board\u003cbr data-start=\"1477\" data-end=\"1480\"\u003e• Board Type: Heat Pump Defrost Control PCB\u003cbr data-start=\"1523\" data-end=\"1526\"\u003e• Function: Automatic Defrost Cycle Control and Heat Pump System Management\u003cbr data-start=\"1601\" data-end=\"1604\"\u003e• Compatible Equipment: Trane and American Standard Heat Pumps\u003cbr data-start=\"1666\" data-end=\"1669\"\u003e• Compatible Applications: Residential and Light Commercial Split-System Heat Pumps\u003cbr data-start=\"1752\" data-end=\"1755\" data-is-only-node=\"\"\u003e• Defrost Functions: Compressor Control, Outdoor Fan Control, Reversing Valve Control, and Defrost Timing\u003cbr data-start=\"1860\" data-end=\"1863\"\u003e• Terminal Configuration: Updated Design (T1 Terminal Eliminated)\u003cbr data-start=\"1928\" data-end=\"1931\"\u003e• Installation: OEM Replacement Circuit Board\u003cbr data-start=\"1976\" data-end=\"1979\"\u003e• Mounting Type: Panel Mount\u003cbr data-start=\"2007\" data-end=\"2010\"\u003e• Application Environment: Residential HVAC, Commercial HVAC, Heat Pump Systems, and Outdoor Condensing Units \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"2159\" data-end=\"2183\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2185\" data-end=\"2496\"\u003e• Trane CNT05001 Defrost Control Board (OEM Service Part)\u003cbr data-start=\"2242\" data-end=\"2245\"\u003e• Trane CNT04366 Defrost Control Board (Superseded)\u003cbr data-start=\"2296\" data-end=\"2299\"\u003e• Trane CNT02514 Defrost Control Board (Superseded)\u003c\/p\u003e","brand":"Trane","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51714173632814,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_be0b2a40-4e10-4a74-8f09-2b16e47682ff.jpg?v=1770418309","url":"https:\/\/plgautomation.com\/products\/trane-21c140501g45-defrost-control-circuit-board","provider":"PLG Automation ","version":"1.0","type":"link"}