Subzero EE code need help for test mode

[William Lewis]

Manufacturer: Subzero

Type of Appliance: Fridge

Model Number: 601R/O

Have you validated the model number at an online parts site like Repair Clinic? (yes or no): Yes

Have you watched the video on how to search for manuals and have you searched the Downloads section prior to posting this request? (yes or no): Yes

Unit has error code on display ‘EE’ with ‘Service’ and ‘Ice’ that won’t go away. Previous tech had already replaced Main Control Board with no success, I have this call first thing tomorrow and need some testing material for insight for unresolved error code/display issues.

[William Lewis]

Temp Control ranged for fridge was only -5* to 5* like a freezer control, I was able to reslove issue by cutting out resistor 50 on new main board (Per Subzero e-mail) then temp ranges returned to normal 34* to 45* and no more display of error EE, Ice and flashing Service, if anyone has any similar issues in the future.

[Samurai Appliance Repair Man]

You need the 600-series service manuals. Search the FILES section using the term "600" and you'll find a smorgasbord of tech docs. For troubleshooting help, start a new topic in the Appliance Repair Tech Forum. 

[Total Appliance and Air Cond Repair]

SubZero Refrigerator Freezer 600 Series (Starts With Serial #1810000)

Error Code: EE Service (Flashing) 38
Cause: SubZero Freezer compartment thermistor fault

Error Code: 00 Service (Flashing) EE
Cause: SubZero Refrigerator compartment thermistor fault

Sub-Zero 600 Series and 700 Series

Sub-Zero Error code: EC21 EC24
Cause of error code: Defrost Functionality Issue
Solution 1: If temperatures are high call for service.
Solution 2: If temperatures are near normal range:
a – Clean the condenser
b – Press and hold the door ajar alarm key for 15 seconds to clear the error code
c – If EC Service light appears, or temperatures rise contact service for repair

Sub Zero Refrigerator 400-2 and 427r-2

Error Code: EE Service (Flashing)
Cause: Refrigerator compartment thermistor fault

Error Code: 38 Service (Flashing)
Cause: Several excessive compressor run times or Sub Zero Refrigerator evaporator thermistor fault

Error Code: 38 Service (Steady, not Flashing)
Cause: Several excessive compressor run times or Sub Zero Refrigerator evaporator thermistor fault

Solution: To clear errors, first fix or repair component then turn unit OFF and back ON
To clear the error code press bell ON/OFF key for 15 seconds

To CLEAR the error code and reset your refrigerator:
Press and hold the door ajar alarm key for 15 seconds to clear the code