wow..I'm stumped or stupid..I've gone through every inch of this fridge and can not bring myself to think its a computer problem. The damper is open, actually took the duct vent away to check. All vents are clear..No ICE buildup what so ever and the fans are working very strong. When ever I shut the bottom freezer door, the cold air to the fridge stops blowing into it. The fan is working when I do this! The return air vent has been steamed and is getting proper air flow..Its a LG LFX23961ST french door model..Any suggestions?..Thanks!