What temp should freezer cycle on-off to maintain set temp?

Brand:Frigidiare
Model Number:LFFH21F7HWJ
Main Symptom:variable inside temp
What happens & when:from below set temp to 6-8 degrees above

Error Code (if any): none
Parts or tests already tried: Main control board, Defrost thermostat and defrost heater
Photos / video link:

Hi Timmodudethis,

I found a tech sheet for your refrigerator that may be helpful.

LFFH21F7HWJ Freezer Service Data Sheet 297246001.pdf (29.8 KB)

Wow, that’s exactly what I needed Thank you very much for the quick response and valuable info.