Wolf Sub-Zero ICB400 Series Service Manual page 99

TroubleShoot Guide
Model ICB427R Refrigerator Error Code Troubleshooting Guide Instructions
Error Codes indicate problems registered by specific components. If error codes are registered, they will appear
before temperature readings while in Diagnostic Mode.
1. Initiate Diagnostic Mode by pressing and holding the COLDER key, and press the POWER key, then release
both keys.
2. Check for Error Codes on the display, making sure to toggle through all possible readings by pressing the
COLDER key or WARMER key. (See Error Code Table Below)
3. If Error Codes appear are displayed, follow the Error Code Troubleshooting Guide on next page.
a. The left column of the Error Code Troubleshooting Guide lists the error codes.
b. The right column of the Error Code Troubleshooting Guide explains what tests and/or corrective actions to
perform.
NOTE: If error codes are observed, the SERVICE indicator will appear constant when Diagnostic Mode ends, indi-
cating error codes are logged. To clear this and the error codes from the software memory, the problem must be
corrected and the unit must be ON. Then, press and hold the bell key for fifteen (15) seconds. The control will emit
a short "beep" when the SERVICE indicator and error codes are cleared.
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.
ICB427R REFRIGERATOR COMPARTMENT 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
50 Excessive Refrigerator Compressor Run
7011544 - Revision A - November, 2008
International W ine Storage
International W ine Storage
Refrigerator Thermistor Location Codes
MODEL ICB427R Only
THERMISTOR LOCATION
Refrigerator Compartment
Refrigerator Evaporator
7-8
Series
Series
(ICB400)
(ICB400)
CODE