I have a Frigidaire model GLFH21F8HWD freezer that is just under 5 years old that was showing 0F on the control panel (according to the manual the freezer will not cool while in this position) The light blinks when the door is opened which the service tech indicates and overload condition. Also, sounds like the compressor is cutting off and on. Service tech said the compressor checked OK, fan running normally, evaporator was not frozen over and door seal OK. Recommended replacing control panel. Ordered new control panel from Appliancepartspros.com and installed new control panel. Set temp for -2 degrees. Took almost 24 hours to reach that temp but freezer was empty. Filled freezer with frozen food, however, temp jumped to 29 degrees and Hi Temp warning light came on. After several hours temp reached -2 degrees. Added unfrozen bread products and same thing happened again. Thermometer inside says temp is around 15 degrees when control panel says -2 degrees. Tried the Extreme Freeze option (control panel did not beep like the manual said) and display showed -F- which is the correct display. After several hours deactivated this feature and control panel displayed -19 degrees. Checked temp inside freezer with thermometer and it registered 15 degrees. Closed door and control panel showed -9 degrees. Service tech says the new control panel is probably faulty. Not certain what to do!!!