Sub-Zero 700-2 Series, Service Manual

Page: 26 / 166

Page 26
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-16
# 3756780 - Revision D - July, 2005
UNIQUE 700- 2 TALL UNIT ELECTRONIC CONTROL INPUT OPERATIONS
The following few pages illustrate unique 700-2 tall unit electronic control input operations performed at the control
panel that you would not expect a customer to perform every day. The input operations described are:
Temperature Unit Selection Mode, Sabbath Mode, Showroom Mode, Manual Compartment Disable Mode, and
Manual Freezer Evaporator Defrost.
Temperature Units Selection Mode (Selecting Degrees Fahrenheit or Degrees Celsius Display)
700-2 electronic controls are initially set to display temperature in Fahrenheit (°F) units of measure. However, the
temperature units displayed can be converted from °F to °C (Celsius), and/or back again. This operation is called
Temperature Units Selection.
NOTE: Temperature Units Selection must be performed within the first minute after switching the unit ON.
To convert the temperature units of measure from Fahrenheit (°F) readings to Celsius (°C) readings, press and hold
the door ajar alarm bell key and the UNIT ON/OFF key simultaneously for five seconds, then release both keys
(See
Figure 3-20). Then, “ °C “ will appear on the LCD indicating that temperatures will now be displayed in Celsius
units of measure. To convert back to Fahrenheit units of measure, repeat pressing the door ajar alarm bell key and
the UNIT ON/OFF key simultaneously
(See Figure 3-21).
NOTE: Temperature Units Selection Mode will end ten seconds after the last key stroke.
NOTE: Do not press and hold the UNIT ON/OFF key first, this will simply switch the unit OFF.
UNIT UNIT ICE ICE
WARMER WARMER COLDER COLDER
REFRIGERATOR REFRIGERATOR
ON/OFF ON/OFF
ON/OFF ON/OFF
ON/OFF ON/OFF
WARMER WARMER COLDER COLDER
FREEZER FREEZER
Figure 3-21. Converting Back to Fahrenheit Units of Measure
(within ten seconds of previous key stroke and/or within first minute after switching unit ON)
Press and Hold the Door Ajar Alarm Bell Key and The UNIT ON/OFF Keys
UNIT UNIT ICE ICE
WARMER WARMER COLDER COLDER REFRIGERATOR REFRIGERATOR
ON/OFF ON/OFF
ON/OFF ON/OFF
ON/OFF ON/OFF
WARMER WARMER COLDER COLDER FREEZER FREEZER
Figure 3-20. Converting to Celsius Units of Measure (within first minute after switching unit ON)
Press and Hold the Door Ajar Alarm Bell Key and The UNIT ON/OFF Keys for Five Seconds
Sabbath Mode
Sabbath Mode was incorporated into the 700-2 electronic control system for the observance of certain religious
days. Initiating Sabbath Mode disables the light switches and the circuits to the ice making system. The door ajar
alarm is also disabled when the unit is in Sabbath Mode.
To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-22). With
the unit switched OFF, press and hold the UNIT ON/OFF key for ten seconds, then release (See Figure 3-23).
To return to normal lighting operation, press and release the UNIT ON/OFF key.