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4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not

move after approximately five minutes.
Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.

5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at a torque of 18 N

•

m with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal

wrench (4 mm).

8. Mount valve caps onto the 2-way valve and the 3-way valve.

• Be sure to check for gas leakage.

1. Remove the control board cover from the unit by

loosening the screw.

2. Connecting cable between indoor unit and outdoor unit

shall be approved polychloroprene sheathed 3 x 1.5 mm

2

(3/4 ~ 1.5HP) or 3 x 2.5 mm

2

 (2.0 ~ 2.5HP) flexible cord,

type designation 245 IEC 57 or heavier cord.

3. Secure the cable onto the control board with the holder

clamper.

4. Attach the control board cover back to the original

position with screw.

5. For wire stripping and connection requirement, refer to

instruction

 of indoor unit.

 This equipment must be properly earthed.

• Earth wire shall be Yellow/Green (Y/G) in colour and

longer than other AC wires for safety reason.

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap

the insulated piping end to prevent water from going inside the piping.

2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E

FOAM with thickness 6mm or above.

• If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 

 above take the following measure: 

- If the leak stops when the piping connections are tightened further, continue working from step 

.

- If the leak does not stop when the connections are retightened, repair the location of leak.
- Do not release refrigerant during piping work for installation and reinstallation. 
- Take care of the liquid refrigerant, it may cause frostbite. 

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• Cooling operation can be set using remote control.
• This operation is applied to cool down the room temperature reaches the setting temperature set on the remote control.
• The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16

°C to

30

°C.

• During cooling operation, the compressor will stop running and restart as shown in figure below.

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• Soft Dry operation can be set using remote control.
• Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.
• This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
• When operation begins, Soft Dry will be switched “ON” for a maximum 10 minutes, then Soft Dry operation will be turned “OFF”

for a minimum 6 minutes. After that, the Soft Dry operation will be “ON” and “OFF” based on the setting temperature as shown in
figure below.

• However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will

start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point.

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• Automatic operation can be set using remote control.
• This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature.
• After judged the temperature, the operation mode is determined by referring to the below standard.

• Then, the unit start to operate at determined operation mode, until it is switched off using remote control, with the setting

temperature as shown in below table.

• The setting temperature for all the operations can be changed one level up or one level down from the standard temperature as

shown in below table by pressing on the temperature up or temperature down button at remote control.

• The operation mode judging temperature and standard setting temperature can be increased by 2

°C permanently, by open the

circuit of JX03 at printed circuit board indoor unit.