Sub Zero Refrigerator Error Codes



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

Error CodesSolution
05Refrig. Cabinet Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s
06Refrig. Evaporator Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s
07Freezer Cabinet Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s
08Freezer Evaporator Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s
20Defrost Under-heat with No Voltage Feedback Through Gray/White Wire at Defrost Start
21Defrost Overheat
22No Voltage Feedback Through Gray/White Wire at Defrost Start
23Defrost Overheat with No Voltage Feedback through Gray/White Wire at Defrost Start
24Defrost Under-heat
30Excessive lcemaker Water Valve Solenoid Activation (Exceeded 15 Seconds, 5 Times)
40Excessive Freezer Compressor Run
50Excessive Refrigerator Compressor Run
FFreezer Compartment
rRefrigerator Compartment
FEFreezer Evaporator
rERefrigerator Evaporator
“EE” Displayed in Place of Freezer Temperature with “SERVICE” FlashingFreezer Compartment Thermistor Disconnected, Shorted, or Misread. Check wiring from thermistor to control board. Reconnect/repair connections. Resistance of thermistor = 30,000-33,000 ohms at 32°F/O°C. Replace if defective.
“EE” Displayed in place of Refrigerator Temperature with “SERVICE" FlashingRefrigerator Compartment Thermistor Disconnected, Shorted, or Misread. Check wiring from thermistor to control board. Reconnect/repair connections. Resistance of thermistor = 30,000-33,000 ohms at 32°F/0°C. Replace if defective.
“SERVICE” FlashingUnit Experienced Temperature Problems.
"ICE" and “SERVICE” Flashing on LCDWater Valve Energized Longer then Fifteen Seconds. Check icemaker area forjammed ice cube, clearjam if present. Check levelness of icemaker, level if needed.
Model 650 Over-and-Under Refrigerator - Freezer

Model 650 Over and Under Refrigerator – Freezer

Sabbath Mode ( Star-K) ?

Sabbath mode is available for the observance of certain religious holidays. This mode turns off the lights, ice maker system and door alarm and prevents them from turning on again. Normal cooling operations will still take place.




Drawer models are certified by Star-K to meet strict religious regulations in conjunction with specific instructions found on www.star-k.org. Column and tall models require the installation of a harness kit. For details about the harness kit, contact your authorized Sub-Zero dealer.

To initiate Sabbath mode, the unit must first be turned off with the UNIT ON/OFF key pad (POWER for column models). When the unit is off, press and hold the UNIT ON/OFF key pad. The unit will turn on as soon as the key pad is pressed. The lights will turn off after holding the UNIT ON/OFF key pad for about 10 seconds. This indicates that the unit has entered Sabbath mode and the key pad can be released.

Sabbath mode can be exited by pressing the UNIT ON/OFF key pad once.

Refrigerator-Freezer Drawers

Refrigerator-Freezer Drawer

Sub Zero Refrigerator Troubleshooting

If your integrated unit is not operating properly, use the following troubleshooting guide before calling Sub-Zero factory certified service. This guide will save you time and trouble and may help you avoid the expense of a service call.

TroubleCause
‘SERVICE’ flashes in the control panel display.Turn the unit off with the UNIT ON/OFF key pad (POWER for column models), then restart by pressing the key pad again. If ‘SERVICE’ flashes again, contact Sub-Zero factory certified service.
‘SERVICE’ and ‘ICE’ flash in the control panel displayTurn the unit off with the UNIT ON/OFF key pad (POWER for column models), then restart by pressing the key pad again. If ‘SERVICE’ and ‘ICE’ flash again, contact Sub-Zero factory certified service.
Refrigerator/freezer is warmer than usual.Is the control set properly?
Is the condenser area clean?
Has the door or a drawer been left open for an extended period? Be sure that food is not obstructing proper door or drawer closing
Has a large amount of food been added recently?
Refrigerator/freezer runs for long periods of timeIs the condenser area clean?
Has the door or a drawer been left open for an extended period? Be sure that food is not obstructing proper door or drawer closing.
Has a large amount of food been added recently?
On hot days and in warm room temperatures, the compressor runs longer.
Refrigerator/freezer is frosted up.Has the door or a drawer been left open for an extended period? Be sure that food is not obstructing proper door or drawer closing.
Are the door and drawers closing and sealing properly?
Refrigerator/freezer is not operating.Is there electrical power to the unit?
Is the refrigerator/freezer control on?
Is the home circuit breaker or fuse off?
Is the condenser area clean?
If the unit is still not running, it may be in defrost mode. Wait 30 minutes to see if the unit will restart.
Condensation forms inside the unit.This is normal during periods of higher humidity and with frequent door openings.
Are the door and drawers closing and sealing properly?
Storage drawer is hard to closeIs the unit leveled properly?
Be sure that there are no food or packaging items that interfere with the ice maker or other interior components.
Drawer slides in a freezer compartment may not move as freely as in a refrigerator compartment due to lower temperatures.
There is an odor inside the unit.Clean the unit thoroughly.
Cover all food tightly.
Ice maker is not working.
Does the unit have an ice maker installed?
Is the ice maker system turned on at the control panel?
Is the ice container in the correct position within the freezer drawer compartment?
Is the water supply for the ice maker connected and operating properly?
Condensation forms outside the unit.During periods of high humidity, some condensation may appear on the outside of the unit. The condensation will disappear when the humidity drops. Be sure that the door and drawers are closing and sealing properly. If condensation persists, contact Sub-Zero factory certified service.
Ice is clumping in the ice containerIs the ice being used frequently? Discard and allow ice to be replenished.

Sub Zero Refrigerator Manual PDF

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