Sanyo Big PACi 18 Series Technical Data & Service Manual page 171

Automatic address setting from the outdoor unit
(K type)
(1) Turn on the indoor and outdoor unit power for
refrigerant system 1.
Press and hold the automatic address setting button
(black) for 1 second or longer at the outdoor unit
where the power was turned ON.
The compressor operates when the power is turned
2
ON at a different outdoor unit.
Communication for automatic address setting
begins.
LED 1 and 2 on the outdoor unit control PCB blink
alternately, and turn OFF when address setting is
completed.
(2) Next, turn ON the power only at the indoor and out-
door units in a different system. Press the automatic
address setting button (black) on the outdoor unit.
LED 1 and 2 on the outdoor unit control PCB blink
alternately, and turn OFF when address setting is
completed.
Repeat the same procedure for each system and
complete automatic address setting.
(3) Operation using the remote controller is now
possible.
Case 2
If the power cannot be turned ON separately for the
indoor and outdoor units in each system:
The compressors must be run in order to automatic-
ally set the indoor unit addresses. Therefore perform
this step after completing the refrigerant tubing work.
(1) Turn ON the power to the indoor and outdoor units
in all refrigerant systems.
When setting addresses in cooling mode
(2) Short-circuit the mode-change pin at the outdoor unit
where automatic address setting will be performed.
Then press the automatic address setting button
(black).
When setting addresses in heating mode
(2) Press the automatic address setting button (black)
at the outdoor unit where automatic address setting
will be performed.
(3) LED 1 and 2 blink alternately. The compressors be-
gin running in cool (or heat) mode. Communication
for automatic address setting begins, using the tem-
perature changes at the indoor units.
Address setting is completed when the compressors
stop and the LED indicators turn OFF. <Approxi-
mately 15 minutes is required for 1 system.>
If address setting fails, LED 1 and 2 blink simultan-
eously and the alarm contents are displayed at the
remote controller.
(4) After 1 system is completed, be sure to press the
automatic address setting button (black) at the other
outdoor units to complete automatic address setting
in the same way for each system.
(5) Operation using the remote controller is now possible.
<Approximately 4 – 5
minutes are required.>
2-26
2-26-3. Checking indoor unit addresses
Use the remote controller to check the addresses of the
indoor units. Press and hold the
on for 4 seconds or longer (simple settings mode, "ALL"
appears on the remote controller).
Then press the button and select the indoor
address.
(For the system addresses of the No. 1 outdoor unit,
each time the button is pressed, the address changes
as follows: 1-1, 1-2, ...)
The indoor unit fan operates only at the selected indoor
unit. Confirm the indoor unit address. (For the system
addresses of the No. 2 outdoor unit, the displayed
addresses are 2-1, 2-2, ...)
Press the button again to return to the normal
remote controller mode.
2-26-4. Indicating (marking) the indoor and outdoor
unit combination number
Indicate (mark) the number after automatic address
setting is completed.
(1) So that the combination of each indoor unit can be
easily checked when multiple units are installed,
ensure that the indoor and outdoor unit numbers
correspond to the system address number on the
outdoor unit control PCB, and use a magic marker
or similar means which cannot be easily removed
to indicate the numbers in an easily visible location
on the indoor units (near the indoor unit nameplates).
Example: (Outdoor) 1 . (Indoor) 1, 2...
(Outdoor) 2 . (Indoor) 1, 2...
(2) These numbers will be needed for maintenance.
Be sure to indicate them.
2-26-5. Setting a wired remote controller as a sub
remote controller
Change the remote controller address connected on the
reverse side of the remote controller switch PCB from
the Main position to the Sub position.
Remote controller address connector
To Service Technicians
To display the trouble history:
To display the sensor temperature:
Press both
Press both and buttons on the
remote controller for more than 4 seconds
remote controller for more than 4 seconds
together. together.
Change the sensor address (CODE NO.) Change the alarm message:
with / (SET TEMP) buttons. /
Select the UNIT NO. that you want to call CODE NO.
with button. (New) (Old)
Press the button to finish service mode. Press the
mode.
Changing method for room
temperature sensor (from Indoor unit
RCU.Main
to RCU)
RCU.CK
1 On the remote controller, press
RCU.Sub
+
RCU
for more than 4 seconds.
RCU.ADR
TMNL.
Set CODE No.
2
(SET TEMP) button.
Set DATA from
3
To avoid an electric shock hazard, with
WA R N I N G
DO NOT touch any ter- Press
4
Finally, Press
minal on the Printed Cir-
cuit Board with a metal rod, a
screwdriver edge or bare hand
when power
is supplied.
button and
Fig. 2-25
Remote Controller (Main)
Checking remote controller
Remote Controller (Sub)
TIMER
TMNL.
and buttons on the
(SET TEMP) buttons
button to finish service
+ at the same time
with /
to
/ (TIMER) button.
Fig. 2-26
butt-