Sub-Zero UC-24 series Service Manual page 8

Electronic Control System
Under Counter (UC-24) Series
Temperature Units Selection (Selecting Fahrenheit or Celsius Display - UC-24B, UC-24R, UC-24RO Only)
NOTE: For Temperature Unit Selection in the model UC-24C, see previous page.
The electronic control is initially set to display temperature in Fahrenheit (°F) units of measure. Units of measure
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 (1) minute of switching the unit ON.
To convert units of measure in these models, first press and hold the WARMER key and the POWER key (this actu-
ally initiates Temperature Log Recall Mode, which is covered fully, later in this section). (See Figure 3-10) Then,
press and hold the WARMER and COLDER keys for fifteen (15) seconds and " °C " will appear on the LCD indicat-
ing temperatures will now be displayed in Celsius units of measure. (See Figures 3-11) To convert back to
Fahrenheit units of measure, repeat the steps above.
NOTE: Temperature Units Selection Mode will end ten (10) seconds after the last key stroke.
Fig. 3-10. (Models UC-24B, UC-24R, UC-24RO) Initiate TLR Mode First (within first minute of switching ON)
Press and Hold WARMER Key, Then Press POWER Key
Press & Hold
for 15 Seconds
Figure 3-11. (Models UC-24B, UC-24R, UC-24RO) Convert Temperature Units of Measure
Press and Hold the Refrigerator WARMER and COLDER Keys for 15 Seconds
3-8
#7003933 - Revision B - November, 2007