Wolf Sub-Zero ICB400 Series Service Manual page 46

International W
International W
MODEL ICB427R REFRIGERATOR SECTION TROUBLESHOOTING INPUT OPERATIONS
The following few pages explain troubleshooting input operations performed at the control panel. The input opera-
tions described are Diagnostic Mode, Manual Component Activation Mode and Temperature Log Recall.
Diagnostic Mode
Initiating Diagnostic Mode allows the Service Technician to observe real-time temperature readings from all thermis-
tors without temperature averaging.
To initiate Diagnostic Mode, the unit must be ON, then press and hold the COLDER key, and the POWER key, then
release both keys (See Figure 3-64).
at the right will be the thermistor location code, and all icons will illuminate. Pressing the COLDER key while in
Diagnostic Mode will toggle forward to the next thermistor location
key will toggle to the previous thermistor location.
NOTE: If the COLDER and POWER keys are pressed and held for ten (10) seconds, Manual Component Activation
Mode will be initiated. This is covered later in the section.
NOTE: Diagnostic Mode will end twenty (20) seconds after the last key stroke.
SERVICE
ICE
Figure 3-64. Initiate Diagnostic Mode, Press COLDER and POWER Keys.
SERVICE
ICE
Figure 3-65. Toggle Through Temperature Readings, Press COLDER Key.
NOTE: In this model, with only two location codes, pressing the WARMER key at this time will also toggle to the
evaporator temperature reading.
ine Storage
ine Storage
At the left side of the LCD will be the real-time temperature of the thermistor,
OFF
("r" Indicates Refrigerator Compartment)
OFF
("E" Indicates Evaporator)
ICB427R Ref Thermistor Codes
THERMISTOR LOCATION
Refrigerator Compartment
Refrigerator Evaporator
Series
Series
(ICB400)
(ICB400)
(See Figures
CODE
r
E
3-33
Electronic Control System
3-65), while pressing the WARMER
7011544 - Revision A - November, 2008