SubZero Refrigerator Freezer Error Code 10 – How to fix? by HoustonAuthorizedRepair.com 

Sub-Zero Refrigerator Freezer Error Codes – How to fix? by HoustonAuthorizedRepair.com 

Sub-Zero is the epitome of style and performance refrigeration. It isn’t just an appliance, your Sub-Zero is an essential element of your perfect kitchen. It makes sense that you wouldn’t want to trust your refrigerator to just any appliance repair company. You want a team of Sub-Zero refrigerator repair experts that can protect your investment while providing the premium service you deserve.

It Is Fixed Appliance Repair is the company you should trust with all of your Sub-Zero repair needs.  Our technicians specialize in Sub-Zero service so you can trust that we have the skills to get the job done right.

HOW TO USE THE ERROR CODE TROUBLESHOOTING GUIDE

Error Codes indicate problems registered by specific components. If error codes are registered, they will appear before temperature readings while in Diagnostic Mode.

NOTE: If Error Codes appear with a flashing “SERVICE” annunciator prior to initiating Diagnostic Mode, the unit experienced excessive compressor run condition that may or may not be associated with the Error Codes displayed

To initiate Diagnostic Mode, press and hold either COLDER key, then press the POWER key, then release both keys. Now, check to see if Error Codes are present, being sure to toggle through all error and temperature readings by pressing either COLDER key or either WARMER key. (See Error Code Table Below)

If Error Codes appear during Diagnostic Mode, follow the Error Code Troubleshooting Guide on the following page. The left column of the troubleshooting guide lists the error codes. The information in the right column explains what tests to perform and/or what action to take to correct the error.

NOTE: If error codes are observed in diagnostic mode, a non-flashing SERVICE annunciator will appear on the LCD when Diagnostic Mode ends, indicating error codes are still stored. Error Codes must be cleared from the electronic control memory manually. To clear the non-flashing SERVICE annunciator and the error codes, the problem must be corrected and the unit must be ON, then:
• On a model UC-24C: Press the Freezer WARMER and COLDER keys for fifteen (15) seconds.
• On a model UC-24B, UC-24R, or UC-24RO: Press the Refrigerator WARMER and COLDER keys 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 CodeCAUSESOLUTION
Error Code 10 The refrigerator is too warm and/or the upper cabinet has been open too long You will receive this error if your refrigerator’s upper cabinet has been open too long or if the upper cabinet is too warm. To resolve the error, disconnect the power from the unit at the circuit breaker. Leave the power off for at least one minute. Turn the power back on and keep the refrigerator door closed until the unit has reached optimal temperature.

Error Code 10
A. If “EE” for refrigerator compartment was displayed and “SERVICE” flashing, check the following:
1. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
2. Resistance of thermistor – 30,000 to 33,000 ohms at 32°F (0°C). Replace if defective.
B. If “EE” for refrigerator compartment was NOT displayed, problem is intermittent thermistor error:
1. Door not closing properly. Correct door closing problem.
2. Check light switch, wiring & electrical connections. Repair wiring / connections or replace switch.
3. Check thermistor electrical connections and continuity at J5 on control board. Reconnect / repair.
4. Check 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 initiating diagnostic mode, unit also experienced excessive compressor run condition that may or may not be associated with the “05” Error Code. See Error Code 50 Test/Actions.

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