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4.4.3 Automatic pump down
An automatic pump down system is applied to the unit to prevent the unit from extra decrease of low
pressure due to pump down operation or burning of scroll compressor due to a close stop valve.
(1) Controller operation
Press the key twice to select the pump down mode, then, the LCD displays "P down".
Select "ON" by using key or key, and press the key to start the automatic pump down
operation.