Thank would guide me about this problem: my freezer frigidaire ffu17f5hwd tells me E8, referred this error

Good Afternoon edgar corro, thanks for your post!
Based off the information you have provided your Frigidaire freezer is displaying an error code "E8". An "E8" error code typically stands for a shorted thermistor this could be a possible miscommunication with the wiring harness, control board, or thermistor. Since it could be anyone of these underlying issues I would suggest contacting a professional technician since they have the appropriate tools to pinpoint the parts needed for repair. Best of luck! -Matt