35
Refrigerant Piping Connections
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Vacuum Mode
REFRIGERANT PIPING CONNECTIONS
Vacuum mode is used for creating a vacuum in the system after the compressor or other Space II unit components have been replaced, or if
an indoor unit has been replaced or added.
The Space II unit does not operate during vacuum mode; Space II unit compressor will not operate.
Switch the Space unit main PCB DIP
switch (SW02B) to ON ( Nos.11, 14)
Vacuum Mode Setting: Space unit valves open,
Main EEV, SC EEV open,
Indoor unit EEVs open.
Reset the power to the Space unit.
Press and hold the black button (SW01V) on the
main PCB for five (5) seconds.
Main PCB
SW01S
Main PCB
SW02B
Main PCB
SW01V
Figure 35: Setting the Vacuum Mode.
Figure 36: Canceling the Vacuum Mode.
Switch the Space unit main PCB DIP
switch (SW02B) to OFF ( Nos.11, 14)
Reset the power to the Space unit.
Vacuum Mode has been cancelled.
Vacuum Mode
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