Panasonic Cs A9ekh Cu A9ekh Cs A12ekh Cu A12ekh Repair Manual

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10 Installation Instruction
10.1. Select The Best Location
• There should not be any heat source or steam near the unit.
• There should not be any obstacles blocking the air circula-
tion.
• A place where air circulation in the room is good.
• A place where drainage can be easily done.
• A place where noise prevention is taken into consideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from the wall, ceiling,
fence or other obstacles.
• Recommended...

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10.2. Indoor Unit
10.2.1. How To Fix Installation Plate
The mounting wall is strong and solid enough to prevent it from
the vibration.
The centre of installation plate should be at more than 450 mm
at right and left of the wall.
The distance from installation plate edge to ceiling should more
than 67 mm.
From installation plate left edge to units left side is 74 mm.
From installation plate right edge to units right is 94 mm.
1. Mount the installation plate on the wall with 5 screws or
more.
(If...

23 For the embedded piping
Pull out the piping and drain hose
How to keep the coverInsert the connecting cable
Install the Indoor unit
Secure the Indoor Unit
(This can be used for left rear piping & left bottom piping 
also.) 

24 • How to pull the piping and drain hose out, in case of the
embedded piping.
• In case of left piping how to insert the connecting cable and
drain hose.
10.2.4. Connect The Cable To The Indoor
Unit
1. The inside and outside connecting cable can be con-
nected without removing the front grille.
2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 3 (C7EK,
C9EK, C12EK, RS-C7EK, RS-C9EK, RS-C12EK) or 5
(A9EK, A12EK) × 1.5mm
2 flexible cord, type designation...

25 torque as stated in the table.
Connecting The Piping To Outdoor Unit
Decide piping length and then cut by using pipe cutter. Remove
burrs from cut edge. Make flare after inserting the flare nut
(locate at valve) onto the copper pipe. Align center of piping tovalves and then tighten with torque wrench to the specified
torque as stated in the table.
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not
removed, gas...

26 4(A). Checking gas leakage for the left piping
10.3.4. Connect The Cable To The Outdoor
Unit
1. Remove the control board cover from the unit by loosen-
ing the screw.
2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 3 (C7EK,
C9EK, C12EK, RS-C7EK, RS-C9EK, RS-C12EK) or 5
(A9EK, A12EK) × 1.5 mm
2 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...

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11 Operation and Control
11.1. Heating Operation
• Heating operation can be set using remote control.
• This operation is applied to warm 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 heating operation, the compressor will stop running and restart as shown in below figure.
11.1.1. Heating Operation Time Diagram 

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11.2. Cooling Operation
• 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 below figure.
11.2.1. Cooling Operation Time Diagram 

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11.3. Soft Dry Operation
• 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...

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11.4. Automatic Operation
• Automatic operation can be set using remote control.
• This operation starts to operate with indoor fan at SLo speed for 25 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 temper-
ature as shown in below table.
• Operation mode will be determine again...