Sub-Zero 400 Series Information Booklet page 28

400-2 SERIES - 427R-2 REFRIGERATOR
(CONTINUED)
NOTE: If "E E C C " (Error Code) is displayed, see Error
Code Table below.
NOTE: If "E E E E " is displayed in place of temperature,
thermistor in that location is faulty.
NOTE: If "S S r" is displayed in place of temperature,
unit is in Showroom Mode.
NOTE: Diagnostic Mode will end 20 seconds after
last key stroke.
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.
50 Excessive Refrigerator compressor run
NOTE: To clear Error Codes, see next page.
ERROR CODE TABLE
PAGE 28