SubZero Refrigerator Freezer Error Code 20 – How to fix? by SubZeroRepairService.us
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HOW TO USE THE ERROR CODE TROUBLESHOOTING OVERVIEW
Mistake Codes recommend problems subscribed by certain aspects. If error codes are joined, they will absolutely appear before temperature level analyses while in Diagnostic Setup.
BEAR IN MIND: If Blunder Codes appear with a blinking “OPTION” annunciator prior to launching Diagnostic Mode, the system experienced too much compressor run problem that might or may not be related to the Blunder Codes displayed
To launch Diagnostic Setting, press as well as also hold either CHILLIER method, after that press the POWER key, after that release both keys. Presently, examine to see if Error Codes are present, making sure to toggle with all error as well as temperature analyses by pushing either COLDER vital or either WARMER trick. (See Mistake Code Table Below).
If Blunder Codes turn up throughout Diagnostic Setting, comply with the Blunder Code Troubleshooting Guide on the adhering to website. The left column of the troubleshooting guide information the mistake codes. The details in the ideal column clarifies what tests to accomplish and/or what activity to require to manage the blunder.
KEEP IN MIND: If error codes are observed in diagnostic mode, a non-flashing SERVICE annunciator will definitely appear on the LCD when Diagnostic Mode ends, suggesting mistake codes are still saved. Blunder Codes must be eliminated from the electronic control memory by hand. To get rid of the non-flashing SERVICE annunciator and additionally the mistake codes, the trouble has to be corrected along with the unit has to be ON, afterwards:.
On a variation UC-24C: Press the Fridge Freezer WARMER as well as COLDER secrets for fifteen (15) seconds.
On a design UC-24B, UC-24R, or UC-24RO: Press the Refrigerator WARMER and also COLDER keys for fifteen (15) secs.
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 |
| Error Code 20 | Defrost underheat | This error may indicate an issue with the wiring, defrost heater, defrost terminator, or refrigerator control board. If you receive this error, contact your local Sub-Zero repair service for assistance. |
Error Code 20
A. If “EE” for fridge area was shown in addition to “SOLUTION” flashing, inspect the following:.
Thermistor electrical links and connection from thermistor to J5 on control panel. Reconnect/ taking care of.
Resistance of thermistor– 30,000 to 33,000 ohms at 32 ° F( 0 ° C). Change if malfunctioning. B. If “EE” for fridge area was NOT presented, concern is reoccuring thermistor error:.
Door not shutting suitably. Suitable door closing trouble.
Inspect light switch, electrical wiring & electrical links. Repairing electric wiring/ links or change switch.
Check out thermistor electric connections as well as connection at J5 on control panel. Reconnect/ fixing solution.
Examine resistance of thermistor– 30,000 to 33,000 ohms at 32 ° F (0 ° C). Change if faulty.
C. If “EC 05” as well as “SOLUTION” were blinking prior to starting evaluation mode, device additionally experienced severe compressor run problem that may or could not be related to the “05” Error Code. See Mistake Code 50 Test/Actions.
