Sub-Zero 700-3 BASE, Technical & Service Manual

Page: 31 / 114

Electronic Control System
Integrated
(700-
3
BASE)
Series
3-19
#3758424 - Revision B - December, 2005
BR-3 Thermistor Code Table
THERMISTOR LOCATION CODE
Refrigerator Compartment r
Evaporator E
ELECTRONIC CONTROL 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 either COLDER key, and press the UNIT
ON/OFF key, then release both keys (See Figure 3-33). The left display area will show the real-time temperature of
the thermistor, the right display area will show the thermistor location code, and all LCD indicators will illuminate.
Pressing either COLDER key while in Diagnostic Mode will toggle forward to the next thermistor location (See
Figures 3-34 & 3-35), while pressing either WARMER key while in Diagnostic Mode will toggle backward to the pre-
vious thermistor location.
NOTE: If the COLDER and UNIT ON/OFF keys are pressed and held for 10 seconds, Manual Component
Activation Mode will be initiated (this is covered later in the section).
NOTE: Diagnostic Mode will end 20 seconds after the last key stroke.
UNIT ICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER COLDER
FREEZER
WARMER COLDER
OFF
SERVICE
ICE
Figure 3-33. Initiate Diagnostic Mode - Press and Hold Either COLDER Key, Then UNIT ON/OFF Key
(“F” Indicates Freezer Compartment)
Figure 3-34. Toggle Through Temperature Readings - Press Either COLDER Key
(“r” Indicates Refrigerator Compartment)
Figure 3-35. Toggle Through Temperature Readings - Press Either COLDER Key
(“E” Indicates Evaporator)
UNIT ICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER COLDER
FREEZER
WARMER COLDER
OFF
SERVICE
ICE
UNIT ICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMER COLDER
FREEZER
WARMER COLDER
OFF
SERVICE
ICE
BCI-3 Thermistor Code Table
THERMISTOR LOCATION CODE
Freezer Compartment F
Refrigerator Compartment r
Evaporator E
BFI-3 Thermistor Code Table
THERMISTOR LOCATION CODE
Freezer Compartment F
Evaporator E