What temperature should I keep my refrigerator at if the house is going to be really warm? My air will be off. I do live in Arizona.

There are plenty of reasons this could happen like the following: PROBLEM POSSIBLE CAUSE Loud operating sound level • See "Sound Information" section for explanation of normal operating sounds Freezer too warm. Compressor not operating • Freezer temperature set too warm • Defective compressor • Defective overload or relay Refrigerator too cold • Refrigerator temperature set too cold • Chefs Pantry control set too cold or misaligned allowing freezer air to escape into refrigerator section • Freezer temperature set too cold • Restricted condenser air • Refrigerant shortage or restriction • Refrigerant overcharge Freezer too warm. Compressor cuts off on overload • Heavy usage • High ambient • Restricted condenser air • Defective condenser fan motor • Loose or missing condenser fan blade • Improper voltage • Defective relay or overload • Compressor motor winding • Non-condensibles in system • Refrigerant overcharge Freezer too warm. Compressor operating • Freezer temperature set too warm • Restricted condenser air • Defective condenser fan motor • Opened door • Heavy usage • Defective freezer fan motor • Opened defrost thermostat • Opened defrost heater • Loose or missing freezer or condenser fan blade • Heavily frosted evaporator • Refrigerant shortage or restriction • Inefficient compressor Refrigerator too warm • Refrigerator temperature set too warm • Freezer temperature set too warm • Return air or air supply duct blocked • Chefs Pantry control set too warm or air supply tube blocked • Heavy usage • High ambient Problem Possible Cause Freezer too cold • Freezer temperature set too cold Long off cyde • Low ambient • Freezer temperature set too warm Short off cycle • Heavy usage • High ambient • Freezer temperature set too cold • Light constantly on • Poor door gasket seal Long or continuous run cyde • Heavy usage • High ambient • Inadequate condenser air flow • Freezer temperature set too cold • Loss or restricted refrigerant Short run cycle • Light usage • Low ambient • Freezer temperature set too warm Exterior cabinet condensation • High humidity. Design accepts beads of water on cabinet exterior after 4 hours with 0° to 2°F (-18° to -17°C) freezer food temperature and 38° to 40°F (3° to 4°C) refrigerator food temperature in 84% R.H. conditions. See "Typical Sweat Pattern" section under above conditions. • Freezer temperature set too cold • Poor door gasket seal • Insulation void

Most likely has a leak that need to be found & fixed
It is low on refrigerant as a result.

Hi mh_petrovici - When doors are opened too often or too long, warm air enters the refrigerator causing it to run more or when the room or outside temperature is hot, it is normal for the refrigerator to work longer under conditions. Temperature control may be set too cold (normally found in refrigerator section), set control to warmer setting until refrigerator temperature is satisfactory. Allow 24 hours for temperature to stabilize completely. A dirty, cracked, worn or poorly fitted door gasket can allow warm air to enter the unit causing it to have to run longer to remove the warm air. Leaks in the door seal will cause freezer to run longer in order to maintain desired temperature. Cleaned the gasket, if it is too damage then it will need to be replace. You can check and see if the door seal is bad by, placing a dollar between the gasket and cabinet. Check to see if the door is being blocked by anything stopping it from closing properly. If nothing is stopping the door then replace gasket. Check and see if the condenser is dirty. A dirty condenser blocks air that dissipates the heat that the condenser removes from the unit. Clean the condenser every 6 months and more if you have animals in the house.

Yes, the air diffuser has to open to allow the cold air from the freezer to be blown into the fridge.

There is a vent that is connected from the freezer down to the fridge right where the fan is,make sure nothing is blocking it.

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Len West

You could also try defrosting the unit completely.

Domestic refrigerators nowadays are designed not to operate at temperatures less than 45 degrees. First, if it's 45 degrees in the house, people probably are not living there. 2nd, 45 degrees keeps food refrigerated. 3, if people are not living in a space, then they don't need to keep frozen food.

This is a result of the changes in refrigerants we've been going through since 1992.
If you want an outdoor freezer, buy one, and make sure it's designed to be used in a non conditioned space.