{"product_id":"ddoruu-50a55-3797-furnace-control-board-replacement-for-white-rodgers-50a55-series-trane-cnt-models","title":"DDORUU 50A55-3797 Furnace Control Board – Replacement for White-Rodgers 50A55 Series \u0026 Trane CNT Models","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe DDORUU 50A55-3797 Furnace Control Board is built as a practical, drop‑in replacement for aging White-Rodgers units and compatible Trane controls. It centers on a microprocessor that continually monitors the gas burner, inducer, and blower to support smooth furnace operation. With standard 25 VAC control signals and clearly rated relays, this board is designed to integrate with a range of common furnace configurations, helping to minimize downtime when a primary control fails.\u003c\/p\u003e\n\u003cp\u003eBeyond basic operation, the board incorporates diagnostic transparency. If a fault occurs, an LED code appears to guide troubleshooting. If a fault is internal to the control, the LED may stay off, signaling that the unit should be replaced rather than repaired on site. This approach supports clear decision-making for maintenance windows and service planning.\u003c\/p\u003e\n\n\u003ch3\u003eKey compatibility and electrical specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInput Voltage: 25 VAC 50\/60 Hz\u003c\/li\u003e\n  \u003cli\u003eMax input current at 25 VAC: 0.45 amp\u003c\/li\u003e\n  \u003cli\u003eValve Relay load: 1.5 amp at 25 VAC, 50\/60 Hz, 0.6 PF\u003c\/li\u003e\n  \u003cli\u003eIgnitor Relay load: 6.0 amp at 120 VAC (resistive)\u003c\/li\u003e\n  \u003cli\u003eInducer Relay load: 2.2 FLA - 3.5 LRA at 120 VAC\u003c\/li\u003e\n  \u003cli\u003eCirculator Relay load: 14.5 FLA - 25.0 LRA at 120 VAC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat this replacement offers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatibility with White-Rodgers 50A55-3797 and related 50A55 models, plus Trane CNT02891, CNT03797, CNT02789 integrated furnace controls\u003c\/li\u003e\n  \u003cli\u003eCompact, reliable board design intended for straightforward installation in standard furnace enclosures\u003c\/li\u003e\n  \u003cli\u003eSelf-diagnostic LED that supports quicker fault identification during service calls\u003c\/li\u003e\n  \u003cli\u003eNon-field-repairable construction; when a fault is detected internal to the control, replacement is recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation and care\u003c\/h2\u003e\n\u003cp\u003eDesigned as a direct replacement, this board aims to fit the mounting pattern and electrical interfaces of the models listed above. Ensure power is disconnected before handling and consult your furnace manual for specific wiring guidance. Regularly inspect connectors and wiring harnesses for signs of wear, corrosion, or loose connections to help maintain reliable operation.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose DDORUU\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBroad compatibility with legacy White-Rodgers and Trane control configurations\u003c\/li\u003e\n  \u003cli\u003eClear fault signaling to streamline troubleshooting\u003c\/li\u003e\n  \u003cli\u003eEfficient replacement path that minimizes downtime\u003c\/li\u003e\n  \u003cli\u003eStable electrical ratings suitable for common gas furnace subsystems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the DDORUU 50A55-3797 Furnace Control Board compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with White-Rodgers 50A55-3797 and related models, plus Trane CNT02891, CNT03797, CNT02789 integrated controls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the board provide fault indication?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it includes an LED indicator for fault codes to aid troubleshooting; if the fault is internal, replacement is advised.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DDORUU","offers":[{"title":"Default Title","offer_id":47468266553518,"sku":"B0D9B59BLF","price":130.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/6012\/9710\/files\/ddoruu-50a55-3797-front-view.jpg?v=1770396995","url":"https:\/\/handyskook.ca\/products\/ddoruu-50a55-3797-furnace-control-board-replacement-for-white-rodgers-50a55-series-trane-cnt-models","provider":"HandySkook","version":"1.0","type":"link"}