64-EN
63-EN
– 32 –
EN
4. Open the access door cover and follow the steps below to set
the address.
REQUIREMENT
•
High voltage parts exist in the electrical control box.
If you set addresses on an outdoor unit, operate the unit through the access door as shown in the illustration
below to avoid electric shock. Do not remove the cover of electrical control box.
* After
fi
nishing operations, close the access door cover and
fi
x it with the screw.
Access door cover
Cover of the electrical control box
Fixing screw for the
access door cover
1
Turn on indoor units
fi
rst, and then turn on outdoor units.
2
About 1 minute after turning the power on, con
fi
rm that the 7-segment display on the interface
P.C. board of the header outdoor unit indicates U. 1. Err (U. 1.
fl
ash) and L08 alternately at
1 second intervals.
3
Press SW06 to start the automatic address setting.
(It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)
4
The 7-segment display indicates Auto 1
→
Auto 2
→
Auto 3 .
The setting is complete when the display changes to U. 1. - - - (U. 1.
fl
ash) or
U. 1. - - - (U. 1. light) .
5
Repeat steps
2
to
4
for other refrigerant lines.
6
Set the central control address.
(For the setting of the central control address, refer to the installation manuals of the central control
devices.)
Interface P.C. board on the header outdoor unit
3
ĸ
2,4
ĸ
REQUIREMENT
•
When 2 or more refrigerant lines are controlled as a group, be sure to turn on all the indoor units in the group
before setting addresses.
•
If you set the unit addresses of each line separately, each line’s header indoor unit is set separately. In that
case, the Code No. “L03” (Indoor header unit overlap) is indicated as running starts. Change the group address
to make one unit the header unit using wired remote controller.
(Example)
Controlling 2 or more refrigerant lines as a group
System wiring
diagram
Outdoor
Indoor
Remote
controller
(Group control)
Indoor
Indoor
Indoor
Outdoor
