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Pump down means collecting all the refrigerant in the system back into the outdoor unit without losing any refrigerant gas.
Pump down is used when the unit is moved or for servicing the refrigerant circuit.
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Close three-way valve halfway.
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Close two-way valve all the way.
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Turn the unit on for approximately 3 minutes in cooling mode.
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Close three-way valve all the way.
Unit
configuration
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Press the and buttons of the infrared remote control and hold them pressed for more than 5 seconds.
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The display will be cleared, the time segments will display the first configuration item (rAdr=remote address) and the temperature segments will display the de
fault value of this configuration item(Ab=control of both indoor units).
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Press either the or button to change the default value (Ab) to the new value (A) or (b).
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Press button repeatedly until “ZONE” is displayed.
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Press either the or button to change the default value of Zone number (0) to the new value(0-240).
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Press button repeatedly to configure Auto recovery function until “A St” is displayed.
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Press either the or button to change the default value of auto restart in last mode(On) to the new value of start in OFF mode(OF).
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LOOK OUT! Whichever configuration value changed must be transmitted to the indoor unit pressing button each time.
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Press
button to leave the configuration menu.
If you are installing two indoor units in the same room and you want them to operate in independent mode. It is necessary to assign each unit its own address so that
each unit can operate via its own remote control. For configuration, proceed as follows.
PUMP DOWN
CONFIGURATION
When 30 seconds have elapsed and no buttons have been pressed, the
remote control will automatically exit the configuration menu and the procedure has to be restarted.
NOTE