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Step 12 Checking the earthing
If the power distribution circuit does not have a earthing
or the earthing does not comply with specifications, an
earthing electrode must be installed. The corresponding
accessories are not supplied with the air conditioner.
1 Select an earthing electrode that complies with the
specifications given in the illustration.
2 Connect the flexible hose to the flexible hose port.
• In damp hard soil rather than loose sandy or gravel
soil that has a higher earthing resistance.
• Away from underground structures or facilities,
such as gas pipes, water pipes, telephone lines and
underground cables.
• At least two metres away from a lightening
conductor earthing electrode and its cable.
NOTE
• The earthing wire for the telephone line cannot be
used to ground the air conditioner.
Carbon plastic
To grounding screw
50 cm
30 cm
3 Finish wrapping insulating tape around the rest of the
pipes leading to the outdoor unit.
4 Install a green/yellow coloured earthing wire:
• If the earthing wire is too short, connect an
extension lead in a mechanic al way and wrap it
with insulating tape (do not bury the connection).
• Secure the earthing wire in position with staples.
NOTE
• If the earthing electrode is installed in an area with
heavy traffic, its wire must be connected securely.
5 Carefully check the installation by measuring the
earthing resistance with a earth resistance tester. If
the resistance is above the required level, drive the
electrode deeper into the ground or increase the
number of earthing electrodes.
6 Connect the earthing wire to the electrical component
box inside of the outdoor unit.
Step 13 Setting an indoor unit address
and installation option
Setting the indoor unit addresses automatically
CAUTION
• This product is prohibited one indoor unit installation.
Don't use pipe checking operation and auto addressing
mode when one indoor unit is installed.
Steel core
Terminal M4
PVC-insulated
green/yellow
wire
‐
: On,
1 Turn on the outdoor unit, and then check whether
the LED indications are displayed as shown in the
following table:
RED
• If the LED indications of the part B are different
from the indications shown in the table, see
Troubleshooting on page 39 and take corrective
actions.
2 Within 3 minutes from system power supply push once
the K1 button.
The LED indications change as shown in the following
table, and the automatic address setting starts.
K1
ON
DIP
1
2
3
4
Dip Switch
LED (RED, GRN / RED,GRN,YEL)
A
B
: Off,
: Blinking
A
GRN
RED
GRN
K3
B
YEL
25
English
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