SERVICE MANUAL 
Model: HB21FC45N*
19
Issue  2010-07-05 
Rev.  Ref1007S019V0 
Chapter 4 Control and display system   
4-1.The top refrigerator control center 
 
 
 
E. Express Freeze         J. Refrigerator Temperature Adjusting Button 
F. Freezer Temperature Adjusting Button           K. Refrigerator Temperature Adjusting Button 
G. Freezer Temperature Adjusting Button           L. Express Chill  
H. Freezer Temperature Indicating Area                M. Water Filter Reset and Energy Saver Button 
I. Refrigerator Temperature Indicating Area            N. Water Filter Indicator Light 
4-2. Fresh food temperature adjustment 
 
 
 
 
 
Press button J or button K: The fresh food temperature control center will flash. When the temperature is 
set, the temperature range is 34 to 44 degrees F. Each time you press button K, temperature will increase 
a level, until the highest temperature level is reached. Each time you press J, the temperature will 
decrease a level, until the lowest temperature level is reached.   
4-3.Freezer temperature adjustment 
 
 
 
 
 
Press button F or button G on the freezer temperature control center: Area H will flicker. When the 
temperature is set, the range of the freezer is -6 to 6 degrees F. Each time you press button G, the freezer 
temperature will increase a level, until the highest temperature level is reached; each time you press 
button F, the freezer temperature will decrease a level, until the lowest temperature level is reached.