7
Temperature Settings
Right Digital Display:
Indicate the current temperature or preset temperature of upper layer. When +/- Key is pressed, display
on the digital tube fl ashes, indicating the preset temperature. If no temperature setting operation occurs
within fi ve seconds, the system will automatically return to the display of ambient temperature in the
storage cabinet, with the accuracy of 1°F.
Malfunction Code Explanation:
E2 Faults of upper layer’s cabinet temperature sensor. The sensor is short circuit or open circuit
(10 seconds later the system will close and this code will display. The buzzer will tweet every 2 seconds).
E9 is Superheating protection. After compressor operating 4 hours under any condition, When the upper
layer sensor detects the cabinet temperature no less than 77°F, The buzzer will alarm and tweet every
2 seconds. When the detected cabinet temperature is >86°F, “E9” malfunction code will display. The
Electrical Heating will close and compressor will go on working. (The buzzer will tweet every 2 seconds).
When Upper layer sensor detects the cabinet Temperature reaches 70°F, the system will restart auto-
matically and the temperature will display normally.
Preset Temperature Adjusting Key for Upper Layer:
Press this key to adjust the preset temperature of upper layer. Every time it is pressed, the preset
temperature of upper layer is increased or decreased by 1°F. Temperature setting range is 54°F - 72°F.
Left Digital Display:
Indicate the current temperature or preset temperature of lower layer. When +/- Key is pressed, display
on the digital tube fl ashes, indicating the preset temperature. If no temperature setting operation occurs
within fi ve seconds, the system will automatically return to the display of ambient temperature in the
storage cabinet, with the accuracy of 1°F.
Malfunction Code Explanation:
E3 Faults of lower layer’s cabinet temperature sensor. The sensor is short circuit or open circuit
(10 seconds later the system will close and this code will display. The buzzer will tweet every 2 seconds).
E8 is Supercooling protection. When the lower layer sensor detects the cabinet temperature reaches
37°F , the compressor will stop, but electrical heating keeps going on. “E8” malfunction code will display
(the buzzer will tweet every 1 second). When the detected cabinet temperature is no less than 43°F,
the system will restart automatically and the temperature will display normally.
Preset Temperature Adjusting Key for Lower Layer:
Press this key to adjust the preset temperature of lower layer. Every time it is pressed, the preset
temperature of lower layer is increased or decreased by 1°F. Temperature setting range is 41°F-54°F.
Compressor Indicator LED:
This LED comes on while the compressor is operating, and goes out when the compressor stops operation.
Electric Heating Indicator LED:
This LED comes on during operation of electric heating device and goes out when electric heating device
stops operation.
Set temperature for
Lower Layer by
adj/- buttons
Left
Digital
Display
Set temperature for
Upper Layer by
adj/- buttons
Right
Digital
Display
Compressor
Indication LED
ON/OFF
Key
