Frezer does not seem to be working in the cold

These tempratures are pretty cold should be around 0 deg. but it sounds like you might have a bad defrost timer or defrost thermostat the frost should not come back if defrost system is working

In case the freezer not getting cold. maybe the tube is leaking .the freon gas scape. or your compessor is defective

check the cooler/freon/

check the temperature settings in the fridge.

It has seperate cooling circuits as you describe the problem can be a leak of refrigerant in the freezer circuit.if there is no heating up in the freezer condensing coil.It has to be check for the leakage.

looks like you have a problem with the damper control. try to locate the sensor for the damper control and relocate it, if still not cold, replace it.

There is a duct between the freezer and refrigerator. Sometimes this duct blocks off with ice and won't allow airflow. Open your refrigerator door and check for air flow if there is none the duct needs to be defrosted. turn off freezer/ refrigerator and defrost.

just about all friges work off the frezer .the evap fan moves the air fromthe frezer to the frig.so you would here fan noise.i dont know your brand but on most frezers if you turn the frezer temp to the highest setting thats acomplished by keeping the air from going to the frige.hence warmer frig temps .also make sure fan on out side back is working and condenser is clean.again turn air damper control from frezer to frige to lowest setting .somthimes this could be in frig section.God bless ,tom

freezer works but fridge wont cool

just give it time as the freezer has to come down to temp first