Originally Posted by Grumps
Refrigerator fails to cool. Freezer & Ice Maker work fine. Fan is running. Very little air flow into frig. Freezer temp -10F. Frig 52F. Air temp into frig -16F. Light layer of frost on coils. No frost in frig. Slight uptick in air flow if freezer door opened. I think the diffuser is the problem, but would like conformation.
the air vent might be partly blocked by some ice build up where the vent is in the refrig, restricting the air flow turn off frig. us a hair blower and melt any ice in it dont holed to close it is made of foam and plastic , if that works ice may be building up on coils in freezer blocking air flow . if frig on bottom is not real cold it may be your defrost timer i had the same problem not any more after replacing defrost timer