When copressor is in operation, 
compressor
is on display.
Haier Deep Freezer
At the state of unlock, press this key to set temperature
First press “up”, digital temperature begin to flash, and press” up” or “down” and let the value to “06”, then press the “SET” key for about 3 seconds. “lock” light die, that means it has enter unlock state. Press “SET” key again, check and set cabinet temperature, high temperature alarm, low temperature alarm step by step. Press “up” and “down” unconsciously, the temperature will be set per 1 
, and if press keys continuously, the temperature value will be increased or decreased very quickly.
Silence
When the operator need to stop the machines, first cut down the power supply (but the display board work all the same, this function is supplied by the charge battery), and then close the switch of charging battery which located at electric control box behind the cabinet.
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