SubZero Refrigerator Freezer Error Code 21 – How to fix? by SubZeroRepairService.us
Sub-Zero is the embodiment of layout and performance refrigeration. It isn’t just a device, your Sub-Zero is an essential element of your superb kitchen area. It makes good feeling that you wouldn’t plan to trust your fridge to simply any type of sort of residence device repair company. You desire a team of Sub-Zero refrigerator repair service professionals that can protect your financial investment while providing the costs service you are worthy of.
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HOW TO USAGE THE ERROR CODE TROUBLESHOOTING OVERVIEW
Mistake Codes suggest issues registered by specific elements. If error codes are subscribed, they will certainly show up prior to temperature readings while in Diagnostic Setup.
KEEP IN MIND: If Mistake Codes appear with a blinking “OPTION” annunciator before initiating Diagnostic Mode, the system experienced too much compressor run condition that might or might not be associated with the Blunder Codes presented
To launch Diagnostic Setup, press as well as additionally hold either COOLER technique, after that push the POWER trick, after that launch both tricks. Presently, inspect to see if Blunder Codes are present, ensuring to toggle with all mistake and also temperature level analyses by pressing either COLDER necessary or either WARMER secret. (See Mistake Code Table Below).
If Blunder Codes appear throughout Diagnostic Setting, follow the Error Code Troubleshooting Overview on the adhering to web page. The left column of the troubleshooting guide details the blunder codes. The info in the best column clarifies what examinations to accomplish and/or what task to need to take care of the error.
KEEP IN MIND: If error codes are observed in diagnostic mode, a non-flashing REMEDY annunciator will definitely appear on the LCD when Diagnostic Setting ends, recommending error codes are still conserved. Mistake Codes must be gotten rid of from the digital control memory by hand. To get rid of the non-flashing SOLUTION annunciator as well as also the error codes, the problem has to be corrected along with the unit needs to be ON, after that:.
On a version UC-24C: Press the Refrigerator Freezer WARMER and also COLDER secrets for fifteen (15) seconds.
On a style UC-24B, UC-24R, or UC-24RO: Press the Refrigerator WARMER and also COLDER secrets 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 21 | The defrost temperature is too high | This error may indicate that the freezer evaporator is improperly mounted, or there is an issue with the internal wiring. Contact a Sub-Zero Repair specialist for assistance. |
Error Code 21
A. If “EE” for fridge location was shown along with “SOLUTION” blinking, examine the following:.
Thermistor electric web links and also continuity from thermistor to J5 on control board. 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 location was ABSENT, issue is persisting thermistor blunder:.
Door not closing appropriately. Proper door closing issue.
Check light switch, wiring & electric links. Fixing electrical wiring/ web links or change button.
Analyze thermistor electric links as well as connection at J5 on control panel. Reconnect/ repair work service.
Take a look at resistance of thermistor– 30,000 to 33,000 ohms at 32 ° F (0 ° C). Replace if malfunctioning.
C. If “EC 05” in addition to “REMEDY” were blinking prior to initiating evaluation mode, device additionally experienced extreme compressor run problem that might or could not be connected with the “05” Blunder Code. See Mistake Code 50 Test/Actions.
