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Quick Answer
This True refrigerator error codes guide explains what each error code means and how to diagnose common True refrigeration problems.
Common Fitment Questions
What should I verify before ordering a refrigeration replacement part?
Verify the model number, serial plate, old part number, dimensions, mounting style, voltage when applicable, and photos of the installed part before ordering.
Can appearance alone confirm compatibility?
No. Commercial refrigeration parts can look similar but differ by dimensions, voltage, connector, mounting pattern, handedness, profile, or equipment application.
What related parts should I inspect during repair?
Inspect nearby wear parts such as gaskets, hinges, latches, heaters, handles, fan blades, sensors, controls, wiring, and mounting hardware depending on the repair symptom.
True refrigerator error codes help identify system problems such as sensor failures, airflow issues, defrost errors, and control board faults. When a True unit displays an error code, it is signaling that one or more components are not operating correctly. This guide explains the most common True refrigerator error codes, what they mean, and how to diagnose the underlying issue so you can restore proper cooling quickly and safely.
What Are True Refrigerator Error Codes?
True error codes are diagnostic messages generated by the electronic control system to indicate abnormal operating conditions.
Most Common True Refrigerator Error Codes
| Error Code | Meaning | Likely Cause | Parts to Check |
|---|---|---|---|
| E1 | Cabinet temperature sensor error | Failed thermistor | Temperature sensor |
| E2 | Defrost system error | Heater or sensor failure | Defrost heater, sensor |
| E3 | Evaporator fan error | Fan motor not running | Fan motor |
| E4 | Condenser fan error | Overheating | Fan motor |
| E5 | High temperature alarm | Airflow restriction | Gaskets, coils |
| E6 | Communication error | Control board issue | Main control board |
How to Diagnose True Error Codes
- Record the exact error code.
- Restart the unit.
- Check fan operation.
- Inspect sensors and wiring.
- Verify defrost system.
- Test control board outputs.
Most Common True Parts That Trigger Error Codes
- Control boards
- Temperature sensors
- Evaporator fan motors
- Defrost heaters
- Thermostats
When to Call a Technician
If error codes persist after basic checks, sealed system or compressor issues may be present.
Related Guides
- Commercial Refrigerator Error Codes
- Commercial Refrigerator Not Cooling
- Control Board Replacement Guide
Frequently Asked Questions
Do all True refrigerators use the same error codes?
No. Codes vary by model and control board version.
Can I reset a True error code?
Yes, but the underlying issue must be fixed.
Are error codes dangerous?
Some indicate overheating or electrical problems.
What is the most common True error?
Sensor and defrost errors are the most frequent.
Will error codes stop cooling?
Many True units disable cooling to protect components.