SERVICE MANUAL 
Model: HB21FC45N*
37
Issue  2010-07-05 
Rev.  Ref1007S019V0 
z  The temperature setting 
for the freezer storage 
compartment is too low 
z  The door gasket of the 
fridge/freezer storage 
compartment is dirty, 
worn, cracked or 
mismatched. 
z  The condenser is dirty. 
24 hours for the refrigerator temperature to 
become stable. 
z  Clean or replace the door gasket. Leakage 
gap of door gasket can cause longer 
running time of the refrigerator in order to 
maintain desired temperature. 
 
z  Clean the condenser. 
Too high temperature 
Too high temperature 
in the fridge/freezer 
storage compartment 
z  The door is opened too 
frequently or for too long 
periods of time 
z  Temperature is set too 
high 
z  The door is not closed 
tightly 
z  The condenser is dirty 
z  Warm air will enter the refrigerator 
whenever the door is opened. Try to open 
the door as infrequently as possible. 
z  Reset the temperature. 
z  Make sure the refrigerator is on a level 
surface and there is no food or container 
interfering with the door. 
z  Clean the condenser. 
The temperature in the 
freezer storage 
compartment is too 
high while the 
temperature in the 
fridge storage 
compartment is OK 
z  The temperature is set 
too high 
z  Set the freezer temperature lower. It takes 
24 hours for the temperature of the 
refrigerator to become stable. 
The temperature in the 
fridge storage 
compartment is too 
high while the 
temperature in the 
freezer storage 
compartment is OK 
z  The temperature is set 
too high 
z Set the fridge temperature lower. It takes 24 
hours for the temperature of the refrigerator 
to become stable. 
Bad odors in the refri
erator 
The inside of the 
refrigerator is dirty 
z  The inside of the 
refrigerator needs 
cleaning 
z  Food with strong odor is 
stored in the refrigerator 
z Clean the internal of the refrigerator
 
z  Wrap the food tightly. 
If 
ou hear... 
Beeps  z  The fridge storage 
compartment door is 
open 
z  The temperature in the 
freezer storage 
compartment is too high 
z  Close the door or silence the alarm 
manually 
 
z  The alarm is normal when it is first started 
due to relatively higher temperature.   
Abnormal sound  z  The refrigerator is not 
located on a level 
surface 
z  The refrigerator touches 
some object around it 
z  Adjust the feet to level the refrigerator. 
 
z  Remove objects around it. 
Slight sound similar to 
that of flowing water 
z  It is the sound of the 
refrigerating system 
z Normal. 
Heating of cabinet  z  The de-dew tube is 
de-dewing 
z  It is a process to prevent dewing. It is a 
normal phenomenon.