SiUS331604E Field Setting from Outdoor Unit
Field Setting 112
3.7 Setting of Refrigerant Recovery Mode
When carrying out the refrigerant collection on site, fully open the respective electronic expansion valve of indoor
and outdoor units
All indoor and outdoor unit’s operation are prohibited.
Operation procedure
(1) In setting mode 2 with units in stop mode, set the item No.21 (refrigerant recovery / vacuuming mode) to ON.
The respective expansion valve of indoor and outdoor units are fully opened. Test Operation and Under
Centralized Control are displayed on the remote controller, and the indoor / outdoor unit operation is
prohibited.
After setting, do not cancel setting mode 2 until completion of refrigerant recovery operation.
(2) Collect the refrigerant using a refrigerant recovery unit. (See the instruction attached to the refrigerant
recovery unit for more detail.)
(3) Press the MODE (BS1) button once and return to setting mode 2.
3.8 Setting of Vacuuming Mode
In order to perform vacuuming operation on site, fully open the electronic expansion valves of indoor and outdoor
units and turn on some solenoid valves.
Operating procedure
(1) In setting mode 2 with units in stop mode, set the item No.21 (refrigerant recovery / vacuuming mode) to ON.
The respective expansion valve of indoor and outdoor units are fully opened. Test Operation and Under
Centralized Control are displayed on the remote controller, and the indoor / outdoor unit operation is
prohibited.
After setting, do not cancel setting mode 2 until completion of Vacuuming operation.
(2) Use the vacuum pump to perform vacuuming operation.
(3) Press the MODE (BS1) button once and reset setting mode 2.
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