Sabbath Mode - Sub-Zero 424HAG/O-2 Service Manual

Electronic Control System

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 and the door ajar alarm feature.
To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-50), then
press and hold the UNIT ON/OFF key for ten (10) seconds, until the LCD and lights switch OFF (See Figure 3-51).
To return to normal operation, press and release the UNIT ON/OFF key.
NOTE: During Sabbath Mode, the evaporator fan may function when drawers are open.
NOTE: During Sabbath Mode, the LCD is disabled and set-points cannot be changed.
Figure 3-51. After Unit is Switched OFF, Press and Hold UNIT ON/OFF Key for 10 Seconds
Showroom Mode
Showroom Mode allow the appliance to be displayed in a showroom setting. When in Showroom Mode, all cooling
functions are disabled, but the lighting system and LCD remain active.
To initiate Showroom Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-52).
With the unit OFF, press and hold the WARMER and COLDER keys, then press the UNIT ON/OFF key (See Figure
3-15). To return unit to normal operating condition, repeat the steps above.
NOTE: Always recheck set-points after returning unit to normal operating condition.
NOTE: It is possible to determine if a unit is in Showroom Mode by initiating Diagnostic Mode. If "Sr" appears on
the LCD during Diagnostic Mode, the unit is in Showroom mode. This is covered later in this section.
Figure 3-52. To Enter (or Exit) Showroom Mode, Switch Unit OFF First
Figure 3-53. After Unit is Switched OFF, Press and Hold the WARMER and COLDER Keys,
#3758410 - Revision C - May, 2014
OFF
Figure 3-50. To Enter Sabbath Mode, Switch Unit OFF First
OFF
Then Press the UNIT ON/OFF Key
Wine Storage
Wine Storage
REFRIGERATOR
COLDER
REFRIGERATOR
COLDER
Press and hold for 10 seconds
REFRIGERATOR
COLDER
REFRIGERATOR
COLDER
3-28
Series
Series
2
2
(400- )
(400- )
UNIT
WARMER
ON/OFF
ON/OFF
UNIT
WARMER
ON/OFF
ON/OFF
UNIT
WARMER
ON/OFF
ON/OFF
UNIT
WARMER
ON/OFF
ON/OFF