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HOW TO USE THE MISTAKE CODE TROUBLESHOOTING OVERVIEW
Mistake Codes indicate troubles signed up by certain components. If error codes are signed up, they will certainly appear before temperature analyses while in Diagnostic Mode.
NOTE: If Mistake Codes appear with a flashing “SOLUTION” annunciator prior to starting Diagnostic Mode, the unit experienced excessive compressor run condition that may or might not be connected with the Mistake Codes displayed
To initiate Diagnostic Mode, press and also hold either COLDER key, then push the POWER key, then release both tricks. Currently, check to see if Error Codes exist, making certain to toggle with all error as well as temperature level readings by pressing either COLDER essential or either WARMER secret. (See Error Code Table Below).
If Error Codes show up during Diagnostic Mode, adhere to the Mistake Code Troubleshooting Guide on the following web page. The left column of the troubleshooting guide notes the mistake codes. The details in the best column explains what examinations to carry out and/or what activity to require to remedy the mistake.
KEEP IN MIND: If error codes are observed in diagnostic setting, a non-flashing SOLUTION annunciator will show up on the LCD when Diagnostic Mode finishes, showing mistake codes are still kept. Error Codes have to be removed from the digital control memory manually. To remove the non-flashing SOLUTION annunciator as well as the mistake codes, the trouble should be fixed and also the unit needs to get on, then:.
- On a model UC-24C: Press the Fridge Freezer WARMER and COLDER keys for fifteen (15) secs.
- On a version UC-24B, UC-24R, or UC-24RO: Press the Refrigerator WARMER and COLDER secrets for fifteen (15) seconds.
Error Code Table
| CODE | INDICATION |
| 05 | Refrig. cabinet thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s |
| 06 | Refrig. evaporator thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s |
| 07 | Freezer cabinet thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s |
| 08 | Freezer evaporator thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s |
| 20 | Defrost under-heat with no voltage feedback through Gray/White wire at defrost start |
| 21 | Defrost overheat |
| 22 | No voltage feedback through Gray/White wire at defrost start |
| 23 | Defrost overheat with no voltage feedback through Gray/White wire at defrost start |
| 24 | Defrost under-heat |
| 30 | N/A |
| 40 | Excessive Freezer Compressor Run |
| 50 | Excessive Refrigerator Compressor Run |
| Error Code | CAUSE | SOLUTION |
| Flashing “Service” Indicator | Communication issue with the main board. | This error indicates that the main control board needs to be reset or replaced. Disconnect the refrigerator from the power by unplugging it, or turning off power at the circuit board. Wait ten minutes and reconnect the power. If the fault is not resolved, contact a service technician for additional assistance. |
Flashing “Service” Indication.
A. If “EE” for fridge compartment was shown and also “SOLUTION” blinking, inspect the following:.
- Thermistor electric connections and continuity from thermistor to J5 on control panel. Reconnect/ repair service.
- Resistance of thermistor– 30,000 to 33,000 ohms at 32 ° F( 0 ° C). Replace if malfunctioning. B. If “EE” for refrigerator area was NOT displayed, issue is periodic thermistor error:.
- Door not shutting properly. Proper door closing issue.
- Inspect light switch, circuitry & electrical links. Repair work circuitry/ links or replace button.
- Examine thermistor electric connections as well as connection at J5 on control panel. Reconnect/ fixing.
- Inspect resistance of thermistor– 30,000 to 33,000 ohms at 32 ° F (0 ° C). Replace if defective.
C. If “EC 05” and “SERVICE” were flashing before launching diagnostic setting, unit likewise experienced extreme compressor run problem that may or might not be connected with the “05” Error Code. See Error Code 50 Test/Actions.
