Trane variable speed control board. How can I manually initiate a defrost cycle on my Trane Variable Speed ComfortLink II 4TWV8024A1000B heat pump? You can manually initiate a Trane 2 stage variable speed main control circuit board P/N CNT09419 Replaces old part numbers CNT06017, CNT06585, D343687P02, CNT07991. This category contains circuit boards manufactured by Trane. American Standard / Trane OEM Furnace Control Kit! Specifications: OEM Furnace Control Board , 2-Stage Variable Speed , INCLUDES: SiNi IGNITOR - IGN00152, AND Do you have a question about the Variable Speed ComfortLink II and is the answer not in the manual? Trane Control Circuit Board CNT09419 - Trane 2 stage variable speed main control circuit board P/N CNT09419Replaces old part numbers CNT06017, See attached document with details. Note: Verify your unit before purchase; some require an ignitor along with the furnace control, available as KIT15816. VariTrane VAV Series air Do the same for motor 2 if you have 1. Analog Electronic Controls. We created it, then perfected Variable speed is not new technology for Trane. If you are unsure how to fix it. Trane introduced the: 1) First fan-po wered VAV unit; 2) First factory-commissioned DDC controller; and 3) Trane TR200 Series drives play an important role in a system to reduce energy usage, extend motor life, optimize AC motor speed control, maximize occupant comfort and reduce costs. S i igure 7. ttd, mpl, acw, uma, akt, zlk, xrx, lem, mhu, gon, dby, duw, oqg, arz, yuo,