A Viking upright freezer holds temperature through a combination of an air-temperature sensor, an evaporator sensor, a circulation fan, a compressor, and a scheduled defrost cycle that has to clear the evaporator coils on a set interval or ice buildup gradually chokes off airflow. Because the sensors and defrost system are built to report their own problems, a freezer that’s running warm or icing up heavily has usually already flagged which part of that system failed.
We confirm the specific failed part with the actual manufacturer resistance and timing specs for these sensors and heaters rather than swapping parts speculatively, since two different sensor problems can look identical from the display alone.
Common Freezer Problems
Freezer running warmer than expected despite normal-looking settings
Heavy frost building up around the evaporator or door gasket
Uneven temperatures from shelf to shelf
Defrost cycle not clearing frost from the coils on schedule
Compressor circuit reporting a problem, with the unit not cooling
Fan near the compressor not spinning
Door-ajar alarm sounding despite the door being fully closed
High-temperature alarm sounding after an extended door opening
Freezer Error Codes
Recognize a code on your display? Look it up before you unplug anything or attempt a repair.
Shr
Viking Freezer Shr (Shorted Thermistor) Alarm
HIGH TEMP
Viking Freezer HIGH TEMP Alarm (Freezer Zone)
oPn
Viking Freezer oPn (Open Thermistor) Alarm
E1
Viking Freezer E1 Error Code
E2
Viking Freezer E2 Error Code
E3
Viking Freezer E3 Error Code
E4
Viking Freezer E4 Error Code
E5
Viking Freezer E5 Error Code
E6
Viking Freezer E6 Error Code
E7
Viking Freezer E7 Error Code
HI
Viking Freezer High-Temperature Alarm
Popular Viking Freezer Models
Viking VCFB5303
Model # VCFB5303
Viking VCFB5363
Model # VCFB5363
Viking VFI7300
Model # VFI7300
Viking VFI7360
Model # VFI7360
Viking DFFB304
Model # DFFB304
Viking DFFB364
Model # DFFB364
Why Trust Us With Your Viking Freezer
- Measured Before Replaced | Every part on your freezer estimate has been tested first with a meter, thermometer or manometer, so you pay only for what actually failed.
- Parts Matched to Your Viking freezer | We read the model and serial number from the rating plate and order for that exact line, since a Professional freezer and a 7 Series freezer rarely share parts.
- Licensed, Insured, Factory-Trained | The technician on your freezer is licensed, insured and factory-trained, and the labor is covered by a 30-day workmanship warranty.
- Straight Advice on an Older freezer | If your freezer is past the point where repair makes sense, you hear why and what the repair would have cost, so the decision stays yours.

