Freezer ok, fridge too cold inspite of dislay temp.6 digrees

Manually defrost the freezer to fridge port with hair dryer on low temp. The fan in side fridge is probably not turn and blowing the cold over

correct

Fridge gets cold air from freezer to cool it. Your freezer is fine but not enough cold air is getting into fridge compartment. U have some dampers or louvers that direct air flow to fridge and if they are not set properly cooling will not be adequate. Check those out.

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

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

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The problem could be the electronic control if you have one or the mechanical linkages.

Temp control = controls run time of the compressor and temp of freezer.
damper and cold control = control how cool the fridge is...
also check you fan speed and air flow to the fridge.

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp ..


If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

How to check stuff>
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

The fridge gets its cold air from the freezer through a vent between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp


If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

Based on your weird display issues I'd lean toward the control board problem. At least that can be "one" of a couple problems...