It's generally not normal. If your refrigerator/freezer runs constantly it may:
- Have a dirty condenser coil. See our Maintenance Tips section for help in cleaning it.
- Not have adequate clearance around the appliance for proper air flow
- Have a bad seal on one of the doors
- Have a light bulb that is not going off when the door is closed
- Have excessive frost build-up on the internal evaporator coils
- Have a defective thermostat
- Be low on refrigerant