Jimmy for Model Number LFFH21F7HWG Frigidaire Upright Freezer LFFH21F7HWG Noticed freezer was not freezing popsicles. temp was set at 0 but display reading 23 let run for another 24 hrs to see if it would go down. Temp went to 7 degrees but popsicles still not frozen. Emptied freezer and found the Evap Coils building up with ice all over. Unplugged and defrosted to clear ice. The heater, thermostat, compressor, compressor run relay and run capacitor all tested good. Tried to enter service mode to check thermistor on control panel by setting temp to 0 and holding up and down arrows for 5 seconds with no results. Tried for 10 seconds with no results. There is no longer an audible alarm for high temp or door adjar just the high temp reading in display. Unplugged for 5 minutes and plugged back in to try to get into service mode no luck. Bad control board? I cannot check the sealed system.
Answer Jimmy, If the thermostat and the heater both check ok then this issue would most likely be the control board not sending the unit into defrost mode. Read More... Answered by AppliancePartsPros.com | Monday, July 30, 2018