Sub-Zero® Refrigeration

Error / Fault codes
 

 

 

400 SERIES WINE STORAGE
Possible Error Indicators
NOTE: Temperatures shown are for reference only, actual temperatures may vary.

55   SERVICE (Flashing)  EE
Upper compartment thermistor fault
BELL ON (Flashing)
55   SERVICE (Flashing)  EE
Upper compartment thermistor fault with temperature alarm
EE   SERVICE (Flashing)  55
Lower compartment thermistor fault
BELL ON (Flashing)
EE   SERVICE (Flashing)  55
Lower compartment thermistor fault with temperature alarm
55   SERVICE (Flashing)  55
Either evaporator thermistor fault
BELL ON (Flashing)
55   SERVICE (Flashing)  55
Either evaporator thermistor fault with temperature alarm
NOTE: Cooling functions are disabled when error indicators appear.  

 

400 SERIES, MODEL 427R REFRIGERATOR
Possible Error Indicators
NOTE: Temperature shown is for reference only, actual temperature may vary.

TOP DRAWER (Flashing)
EE   LOWER DRAWER (Flashing)
Refrigerator compartment thermistor fault
TOP DRAWER (Flashing)
40   LOWER DRAWER (Flashing)
Refrigerator evaporator thermistor fault.
E0
700BR & 700BF Communication Error between
Control Board & Control Panel
E3
700BR & 700BF Communication Error between
Control Board & Control Panel

 

400-2 SERIES WINE STORAGE
Possible Error Indicators
NOTE: Temperatures shown are for reference only, actual temperatures
may vary.
55 SERVICE (Flashing) EE
Upper compartment thermistor fault
BELL ON (Flashing)
55 SERVICE (Flashing) EE
Upper compartment thermistor fault with temperature alarm
EE SERVICE (Flashing) 55
Lower compartment thermistor fault
BELL ON (Flashing)
EE SERVICE (Flashing) 55
Lower compartment thermistor fault with temperature alarm
55 SERVICE (Flashing) 55
Either evaporator thermistor fault
BELL ON (Flashing)
55 SERVICE (Flashing) 55
Either evaporator thermistor fault with temperature alarm
NOTE: Cooling functions are disabled when error indicators appear.

 

400-2 SERIES WINE STORAGE

CODE	INDICATION
05	Upper Cabinet Thermistor read open / short for 10+ seconds, or repeatedly erratic temp’s.
06	Upper Evap. Thermistor read open / short for 10+ seconds, or repeatedly erratic temp’s.
07	Lower Cabinet Thermistor read open / short for 10+ seconds, or repeatedly erratic temp’s.
08	Lower Evap. Thermistor read open / short for 10+ seconds, or repeatedly erratic temp’s.
10	Upper Cabinet Warm Temperature alarm
11	Upper Cabinet Cold Temperature alarm
12	Lower Cabinet Warm Temperature alarm
13	Lower Cabinet Cold Temperature alarm
15	Sealed System Fault (evap temp. cannot drop 5° in 5 minutes, 3 consecutive valve activations)

 

400-2 SERIES - 427R-2 REFRIGERATOR

CODE	INDICATION
05	Upper Cabinet Thermistor read open / short for 10+ seconds, or repeatedly erratic temp’s.
50	Excessive Refrigerator compressor run

 

600 SERIES (Prior To Serial #1810000)

Possible Error Indicators
NOTE: Temperatures shown are for reference only, actual temperatures may vary.
EE SERVICE (Flashing) 38
Freezer compartment thermistor Fault
00 SERVICE (Flashing) EE
Refrigerator compartment thermistor fault
00 SERVICE (Flashing) 38
Refrigerator evaporator thermistor fault
SERVICE (Flashing)
00 ICE (Flashing) 38
Water valve energized longer than 15 seconds. Icemaker system disabled.
NOTE: A 45 minute dwell follows each IM cycles (no power to Icemaker). To bypass 45 minute dwell, Switch unit OFF then back ON.
SERVICE (Flashing)
12 VACUUM (Flashing) 45
CONDENSER
Several excessive compressor run periods

 

600 SERIES (Starting With Serial #1810000)

Possible Error Indicators
NOTE: Temperatures shown are for reference only, actual temperatures may vary.
EE SERVICE (Flashing) 38
Freezer compartment thermistor fault
00 SERVICE (Flashing) EE
Refrigerator compartment thermistor fault
00 SERVICE (Flashing) 38
Several excessive compressor run periods OR
Refrigerator evaporator thermistor fault
SERVICE (Flashing)
00 ICE (Flashing) 38
Water valve energized longer than 15 seconds. Icemaker system disabled.
NOTE: A 45 minute dwell follows each IM cycles (no power
to Icemaker). To bypass 45 minute dwell, Switch unit OFF
then back ON.

600 SERIES (Starting With Serial #1810000)

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 Underheat 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 Underheat

 

600-2 SERIES

Possible Error Indicators
NOTE: Temperatures shown are for reference only, actual temperatures may vary.
EE SERVICE (Flashing) 38
Freezer compartment thermistor fault
00 SERVICE (Flashing) EE
Refrigerator compartment thermistor fault
00 SERVICE (Flashing) 38
Several excessive compressor run periods OR
Refrigerator evaporator thermistor fault
SERVICE (Flashing)
00 ICE (Flashing) 38
Water valve energized longer than 15 seconds, five consecutive
times. Icemaker system disabled 24 hours each time.
NOTE: A 45 minute dwell follows each IM cycles (no power
to Icemaker). To bypass 45 minute dwell, Switch ice maker
system OFF then back ON.
00 SERVICE (Steady, not Flashing)38
Error Codes logged and observed but not cleared.

600-2 SERIES

CODE	INDICATION
05	Ref. cabinet therm. read open, short or erratic temp for 10+ sec’s
06	Ref. evap. therm. read open, short or erratic temp for 10+ sec’s
07	Fre. cabinet therm. read open, short or erratic temp for 10+ sec’s
08	Fre. evap. therm. read open, short or erratic temp for 10+ sec’s
20	Defrost underheat & no feedback thru Gr/Wh wire at defrst start
21	Defrost overheat
22	No feedback thru Gr/Wh wire at defrost start
23	Defrost overheat & no feedback thru Gr/Wh wire at defrost start
24	Defrost underheat
30	Excess IM Water Valve Solenoid Activation (> 15 Seconds)
40	Excessive Freezer Comp Run
50	Excessive Refrigerator Comp Run

 

700 SERIES

Possible Error Indicators
- -
“- -” = Control is shut off. Press COLDER key to start unit.
- 20
“- 20 ” = Zone/Compartment thermistor fault. Repair wiring
or replace thermistor.
55
“55” = Zone/Compartment thermistor shorted. Repair wiring
or replace thermistor.
Su
“Su” = Blue wire of display cable unhooked or faulty. Repair
wiring.
- 88
“- 88 ” = Red Wire of display cable unhooked or faulty, top
lights are off and keys are inoperative. Repair wiring.

 

700-2 SERIES (Tall Units)

Possible Error Indicators
NOTE: Temperatures shown are for reference only, actual temperatures may vary.
EE SERVICE (Flashing) 38
Freezer compartment thermistor Fault
00 SERVICE (Flashing) EE
Refrigerator compartment thermistor fault
00 SERVICE (Flashing) 38
Several excessive compressor run periods OR
Refrigerator evaporator thermistor fault
SERVICE (Flashing)
00 ICE (Flashing) 38
Water valve energized longer than 15 seconds. Icemaker
system disabled.
NOTE: A 45 minute dwell follows each IM cycles (no power
to Icemaker). To bypass 45 minute dwell, Switch unit OFF
then back ON.

700-2 SERIES (Tall Units)Starting W/ Serial #1759163

CODE	INDICATION
05	Ref. cabinet therm. read open, short or erratic temp for 10+ sec’s
06	Ref. evap. therm. read open, short or erratic temp for 10+ sec’s
07	Fre. cabinet therm. read open, short or erratic temp for 10+ sec’s
08	Fre. evap. therm. read open, short or erratic temp for 10+ sec’s
20	Defrost underheat & no feedback thru Gr/Wh wire at defrst start
21	Defrost overheat
22	No feedback thru Gr/Wh wire at defrost start
23	Defrost overheat & no feedback thru Gr/Wh wire at defrost start
24	Defrost underheat
80	High VS compressor differential pressures or low voltage supplied to VS compressor
81	High Amperage Draw at VS compressor
82	VS comp. couldn’t maintain min. speed at highest current draw
83	Locked VS compressor Rotor
84	Short circuit at VS compressor controller output circuit
85	VS compressor inverter overheated & shut down VS compressor
86	Serial communication failure between VS compressor controller and electronic control board
87	Speed information from electronic control board is out of spec.
88	Electronic control board not receiving status data in response to speed commands

 NOTE: VS Compressor = Variable Speed Compressor

700-3 SERIES - TALL UNITS

CODE	INDICATION
05	Ref. cabinet therm. read open, short or erratic temp for 10+ sec’s
06	Ref. evap. therm. read open, short or erratic temp for 10+ sec’s
07	Fre. cabinet therm. read open, short or erratic temp for 10+ sec’s
08	Fre. evap. therm. read open, short or erratic temp for 10+ sec’s
20	Defrost underheat & no feedback thru Gr/Wh wire at defrst start
21	Defrost overheat
22	No feedback thru Gr/Wh wire at defrost start
23	Defrost overheat & no feedback thru Gr/Wh wire at defrost start
24	Defrost underheat
30	Excess IM Water Valve Solenoid Activation (> 15 Seconds)
40	Excessive Freezer Comp Run
50	Excessive Refrigerator Comp Run

 

700-3 SERIES - BASE UNITS

CODE	INDICATION
05	Ref. cabinet therm. read open, short or erratic temp for 10+ sec’s
06	Ref. evap. therm. read open, short or erratic temp for 10+ sec’s
07	Fre. cabinet therm. read open, short or erratic temp for 10+ sec’s
08	Fre. evap. therm. read open, short or erratic temp for 10+ sec’s
20	Defrost underheat & no feedback thru Gr/Wh wire at defrst start
21	Defrost overheat
22	No feedback thru Gr/Wh wire at defrost start
23	Defrost overheat & no feedback thru Gr/Wh wire at defrost start
24	Defrost underheat
30	NA
40	Excessive Freezer Comp Run
50	Excessive Refrigerator Comp Run

 

 

 

SubZero Refrigerators Fault Codes

 

 

 

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