Victory Refrigerator Error Codes E01-E04: Sensor Failure
E01, E02, E03 and E04 on a Victory VUR refrigerator with a Danfoss controller mean a sensor is unplugged or has failed. The manual's only instruction is to call for service. Note which of the four codes is shown and tell the technician.
Medium: the unit may run, but a missing sensor reading can upset temperature control.
- Code
- E01, E02, E03, E04
- Maker
- Victory
- Equipment
- Reach-in refrigerators
- Applies to
- Victory hydrocarbon rear-mount and side-mount VUR refrigerators (Danfoss controller)
What does Victory error code E01 mean?
E01, E02, E03 and E04 are listed together in the message table of the Danfoss controller on Victory hydrocarbon rear-mount and side-mount VUR refrigerators. The controller reads temperature sensors and expects a valid reading from each. If a sensor wire is unplugged, or the sensor fails, the controller cannot get a usable signal and shows one of these codes. The manual gives a single meaning for all four: sensor unplugged or failed. It does not say which code belongs to which sensor, such as cabinet air or evaporator, and its action is the one line, call for service. So the operator can tell that a sensor reading is missing, but not which sensor without the technician's parameter data. Without a good cabinet sensor, the controller may not regulate the cabinet as intended, which is why the manual asks for service rather than a user reset.
Affected models and control systems
E01 to E04 are listed for Victory hydrocarbon rear-mount and side-mount VUR refrigerators with a Danfoss controller, in the message table printed on page 11 of the user manual. The manual groups the four numbers into one entry.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- E01, E02, E03 or E04 on the display
- Cabinet temperature shown incorrectly or not at all
- Cooling that runs too long or does not start as expected
Possible causes
Likely causes — what usually sits behind error code E01 on this control. A technician confirms which one it is before any part is replaced.
- Sensor unplugged
- Sensor failed
- Sensor cable pinched or cut where it runs through the cabinet wall
- Sensor connector loosened by vibration or cleaning
- Moisture or ice damage at the sensor tip
Safe checks before calling for service
- Note exactly which code is shown, E01, E02, E03 or E04.
- Check the cabinet temperature with a separate thermometer.
- Do not unplug sensors or open the controller; the manual says call for service.
- Move food to a working unit if the cabinet is warming.
- Tell the technician the code, the thermometer reading and when it began.
How a technician diagnoses error code E01
- Read the code and identify which sensor each number maps to in the controller parameters.
- Check sensor connection at the controller and along the cable.
- Measure the sensor resistance and compare with its chart at the actual temperature.
- Inspect for moisture or ice damage.
- Replace the sensor only if it fails, then confirm the code clears.
- Sensor testing needs the controller's parameter list and a meter.
- The controller sits next to live wiring in a unit that uses a flammable hydrocarbon refrigerant.
- The manual itself directs the user to call for service for these codes.
How error code E01 differs from similar codes
The four numbers share one manual entry here, so any of them is the same sensor-unplugged-or-failed meaning with a different sensor.
Technical reference
- Document
- Installation and Operating Instructions for all Hydrocarbon Rear Mount and Side Mount VUR Refrigerator Models (User Manual for VUR Refrigerator)
- Maker documentation
- Victory owner support
- Edition
- 809-202A REV E. 03/10/2026 (footer Rev. 03/26)
- Models / control
- Victory hydrocarbon rear-mount and side-mount VUR refrigerators (Danfoss controller)
- Section
- Using the Unit - Danfoss Controller, message table, printed p. 11
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Victory reach-in refrigerator error codes
Which sensor does E01 mean compared with E04?
The manual does not say. A technician maps each number from the controller parameters.
Can I keep using the refrigerator?
Only with close temperature checks. A missing sensor may stop proper regulation.
Will the code clear by itself?
A sensor that was only loosely seated might recover, but the manual says to call for service.
Need help with Victory error code E01?
A technician confirms the cause on site and gives you the price in writing before any work starts.