12
Application method
An electronic digital display thermostat is installed on the control panel of the low temperature
freezer, and the digital display can show the actual temperature in the cabinet after power on. The
temperature has been set to -47°C after power on and -50°C after shutdown when leave factory(The
temperature of DW-40W100J/255J/388J has been set to -37°C after power on and -40°C after
shutdown when leave factory) .
Electronic thermostat schematic
：
A
Setting button
C
Alarm indication
E
Decrease button
B
Power indication
D
Refrigeration status
F
Add button
Generally in normal use, it is no need to adjust the setting temperature. If adjusting
the setting temperature, it may cause product high temperature (AH) or low
temperature (AL) alarm, at this time, please adjust the temperature alarm value (AH,
AL). The general high and low alarm value is within the range of ±5°C of the setting
temperature.
A
D
B
C
F
E
Electronic temperature controller
13
•Display setting temperature
A few seconds after the low temperature freezer power on, the display screen shows the current
temperature in the cabinet, If you need to check the setting temperature, operate as the following
steps:
1. Press the
key for more than 1 second, the screen shows the setting temperature;
2. Press the
key again and the screen will then show the inner temperature.
•Setting temperature
The thermostat on the control panel of the low temperature freezer can manually set the control
parameters.
1. Press the
key for more than 1 second, the screen shows the setting temperature;
2. Set a new temperature, the screen shows the setting temperature, press the
key or
key to
adjust the required temperature;
3. After the setting temperature fi nish, press the
key once to save and exit.
•Error display
Suggestion: When it is judged that the temperature probe is wrong, please cut off the power .
•First, please check if the connection of the temperature probe is loose. If user
tune out the internal code while adjusting the thermostat, wait one minute and
until it shows real temperature inside the cabinet then to operate again, that is to
avoid the failure of the freezer due to the change of the control parameters.
In the event of a power shutdown or other fault, the freezer stops temporarily and
the temperature inside the freezer will rise, if it power can not recover in a short
time, please consider taking out the stored items for other thermal storage and
processing, to avoid loss caused by storage damage.
•Before stored items put into the freezer, please confi rm in advance weather it
is suitable for the low temperature you set, so as to avoid loss from stored items
damaged due to the unsuitable temperature.
Summary of Contents for DW-40W100J
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