Sub-Zero UC-24 series Service Manual page 9

Under Counter (UC-24) Series
Sabbath Mode
Sabbath Mode was incorporated into the electronic control system for the observance of certain religious days.
Initiating Sabbath Mode disables the LCD and lighting system.
To initiate Sabbath Mode, the unit must first be switched OFF using the POWER key (See Figure 3-12), then press
and hold the POWER key for approximately ten (10) seconds, until the LCD and lights switch OFF (See Figure 3-
13). To return to normal operation, press and release the POWER key.
NOTES:
• During Sabbath Mode, the evaporator fan may function when the door is open.
• During Sabbath Mode, the LCD is disabled and set-points cannot be changed.
• The icemaker in the model UC-24C is fed direct from L1, so icemaker operation is not affected by Sabbath Mode.
• The Model UC-24B utilizes a rocker switch at the top of the compartment for controlling the accent lights. This
accent lighting system is not affected by Sabbath Mode because its power comes direct from L1.
Figure 3-13. After Unit is Switched OFF, Press and Hold POWER Key for 10 Seconds
Figure 3-12. To Enter Sabbath Mode, Switch Unit OFF First
Electronic Control System
3-9
#7003933 - Revision B - November, 2007
Press and release,
switching unit OFF
Press and hold
for 10 seconds