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PUTTING INTO SERVICE-TEMPERATURE SETTINGS
Digital Tube1: Indicate the current temperature or preset temperature of upper layer. When +/- Key is
pressed, display on the digital tube flashes, indicating the preset temperature .If no temperature setting
operation occurs within five seconds, the system will automatically return to the display of ambient
temperature in the storage cabinet, with the accuracy of 1(1)
The introduction about malfunction code: E2 Faults of upper layers cabinet temperature sensor.
The sensor is short circuit or open circuit.(10seconds 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 25 (77),the buzzer will alarm and tweet
every 2 seconds. When the detected cabinet temperature is 30,E9malfunction 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 21, the system will
restart automatically 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(1).Temperature setting range is 12-22(54-72)
Digital Tube2: Indicate the current temperature or preset temperature of lower layer. When +/- Key is
pressed, display on the digital tube flashes, indicating the preset temperature .If no temperature setting
operation occurs within five seconds, the system will automatically return to the display of ambient
temperature in the storage cabinet, with accuracy of 1(1)
The introduction about malfunction code: E3 faults of lower layers 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 3
(37), 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 6(43),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(1). temperature setting range is 5-12(41-54)
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.
5
Electric Heating
Indication LED
Test key
Preset temperature adjusting
Key for Lower Layer
Digital Tube 2
Preset temperature
adjusting Key for upper
Layer
Compressor
Indication LED
ON/OFF Key
Digital Tube 1
4
39


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