Sub-Zero 642-2 User Manual

Built-In
Built-In
(600-
(600-
2
2
)
)
Series
Series
Electronic Control System
3-17
#3758407 - Revision B - August, 2006
UNITICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMERCOLDER
FREEZER
WARMERCOLDER
UNITICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMERCOLDER
FREEZER
WARMERCOLDER
Figure 3-24. Then Press and Hold UNIT ON/OFF Key for 10 Seconds
UNITICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMERCOLDER
FREEZER
OFF
WARMERCOLDER
Showroom Mode
Showroom Mode was incorporated into the electronic control system so that units could be displayed in a showroom
setting. When in Showroom Mode, all cooling functions are disabled, but the lighting system remains active.
To initiate Showroom Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-25),
then press and hold either pair of WARMER and COLDER keys, then the UNIT ON/OFF key, then release all three
keys (See Figure 3-26). To return the unit to normal operation, repeat the steps above.
NOTE: Always check set-points after returning unit to normal operation.
NOTE: It is possible to determine if a unit is in Showroom Mode by initiating Diagnostic Mode. If “Sr” is observed in
the left temperature display area during Diagnostic Mode, the unit is in Showroom mode. Initiating Diagnostic Mode
is covered later in this section.
Figure 3-26. Then Press and Hold WARMER and COLDER Keys, Then the UNIT ON/OFF Key
Figure 3-25. To Enter (or Exit) Showroom Mode, Switch Unit OFF First
UNITICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMERCOLDER
FREEZER
OFF
WARMERCOLDER
Press and hold for 10 seconds
Sabbath Mode
Sabbath Mode was incorporated into the electronic control system for the observance of certain religious days.
Initiating Sabbath Mode disables the LCD, lighting system, ice making system and door ajar alarm feature.
To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-23), then
press and hold the UNIT ON/OFF key until the LCD and lights switch OFF, approximately 10 seconds (See Figure 3-
24). To return to normal operation, press and release the UNIT ON/OFF key.
NOTE: During Sabbath Mode, the LCD is disabled and set-points cannot be changed.
NOTE: During Sabbath Mode, the compartment thermistors still control compressor operation, except that when
high offset is reached, there is a random 15 to 25 second delay before compressors are energized.
Figure 3-23. To Enter Sabbath Mode, Switch Unit OFF First

Sub-Zero 642-2 Specifications

General

Brand	Sub-Zero
Model	642-2
Category	Refrigerator
Language	English