HVAC Circuit board

Need help determining which HVAC circut board I need.

Sure, I can help with that! The best place to start searching is with the model number of your unit. With that information I should be able to assist you in locating a compatible replacement part for your system.

here are the three numbers: "Model 50A50 - 405", "D340035P01", Replace with "CNT1309". can you guide me on which number I should use when ordering?

Here is a link for the replacement part.

http://www.northamericahvac.com/trane-c ... 50a50-405/


Please let us know if you have any other questions. Thank you!