ER FF is "Error
Freezer Fan." Once the evaporator fan stops turning for more than 115 seconds, this
error message will be displayed. This
fridge is poorly designed and is not designed with air gaps or enough air gaps to allow air behind the back panel of the
freezer where the fans and condenser coils are located thus causing ice to build up around the fan and it's ability to spin. The evaporator fan helps
circulate the cold air generated by the condenser coils.
The fix is (1) defrost your
refrigerator which means you'll loose all your food if you don't have another unit to keep the food in until it's done defrosting or (2) to dismantle the entire freezer by removing all the trays and railing so that you can pull the back panel far enough to get the front end of a hair
dryer over the top lip of the panel to melt the ice. My unit had ice build at the top right and left corners behind the panel. I opted for the latter and didn't have to throw any food away.
Good luck
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