LENNOX Ignition Control Board: Mfr Part # 49W66
SKU 3G-OTH-107253
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Frequently Asked Questions
What is the LENNOX 49W66 Ignition Control Board used for?
The LENNOX 49W66 Ignition Control Board is a replacement HVACR control that manages the ignition sequence in compatible LENNOX gas furnaces and heating systems. It ensures safe and reliable burner ignition by controlling spark or hot-surface igniter operation, flame sensing, and system timing.
What are the specifications of the LENNOX 49W66 Ignition Control Board?
The LENNOX 49W66 is an Ignition Control Board with manufacturer part number 49W66. It is designed as a direct replacement for specific LENNOX furnace models. Key specs include its product type as an ignition control board and its OEM part number for accurate cross-referencing.
Where to buy the LENNOX 49W66 Ignition Control Board worldwide?
3G Electric supplies the LENNOX 49W66 Ignition Control Board to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this genuine LENNOX replacement part for your HVACR system.
How to install the LENNOX 49W66 Ignition Control Board?
Installation of the LENNOX 49W66 Ignition Control Board requires disconnecting power, removing the old board, and mounting the replacement in the same orientation. Connect all wiring per the furnace wiring diagram, ensuring proper grounding. Always follow LENNOX service instructions and local codes for safe operation.
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Common applications for LENNOXLENNOX Products
3G Electric supplies LENNOX replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.














