15
OPERATING INSTRUCTIONS
Key lock operation
This unit incorporates a key lock feature which can inhibit the tampering using the keys on the control
panel.
The key lock is set to OFF at the factory.
Display Mode
Function
L 0
Key lock OFF
Temperature change enabled
L 1
Key lock ON
Temperature change disabled
Table 2 Key lock setup procedure (Example: Key lock OFF
⇒
Key lock ON)
Operation
Key operated
Indication after operation
The current refrigerator or freezer
temperature is displayed.
1
Press and hold the digit shift
key for about 5 seconds.
The first digit of the temperature
display blinks.
2
Set the first digit to 1 with
the numerical value shift key.
Pressing the key shifts up the figure
of the digit.
3 Press the set key.
SET
Key lock is set to ON and the current
refrigerator or freezer temperature is
displayed.
Note:
Key lock can be set any time when the current refrigerator or freezer temperature is displayed.
Defrosting of freezer
Table 3 below shows the procedure for defrosting of freezer or stopping the freezer operation.
Table 3
Operation
Key operated
Indication after operation
1
Select freezer (FREEZ.)by pressing
display select key.
REF.
FREEZ.
The current freezer temperature
is displayed.
2 Press the set key.
SET
The current set value is displayed
and the second digit of the tempera-
ture display flashes.
Pressing the key leads blink of the
first digit of the temperature display.
3
Set to -00 by using digit shift key
and numerical value shift key.
Pressing the key shifts up the figure
of the current digit.
4 Press the set key.
SET
The value is stored in memory and
the current refrigerator temperature
is displayed.
5 Check the defrosting is finished.
Pressing the key shifts up the figure
of the current digit.
6
Set the freezer temperature by the
procedure 6 through 9 in Table 1
and start the freezer operation.
