System Control; K Type; Caution - Sanyo Big PACi 18 Series Technical Data & Service Manual

2-8-6. Main-sub remote controller control
Control using 2 remote controller switches
Main-sub remote controller control refers to the use of 2
remote controllers to control 1 or multiple indoor units.
(A maximum of 2 remote controllers can be connected.)
Connecting 2 remote controllers to control 1 in-
door unit
Remote controller Remote controller
switch (main) switch (sub)
Optional Optional
1 2
1 2
Remote controller wiring
Terminal plate for remote
controller wiring
1 2
Indoor unit
U1U2
Ground
1 2
Outdoor unit
Ground
Connecting 2 remote controllers to control a
simultaneous-operation multi system
Remote controller Remote controller
switch (main) switch (sub)
Optional
Optional
1 2 1 2
Terminal plate
for remote
controller wiring
1 2 1 2
Indoor unit 1 Indoor unit 2
U1U2 U1U2
Ground
Ground
1 2
Inter-unit
Outdoor unit
control wiring
Ground
Remote controller setting mode
To set the remote controller main/sub setting or change
the sensor, follow the steps below.
(1) Press both and
controller for more than 4 seconds together.
(2) Select CODE No. with
(3) Change DATA with
(4) Press . Finally, press
DATA is memorized in the RCU. (DATA setting will
not be changed even when the power is turned off.)
Make sure to set [Normal] for RCU. CK.
CODE
ITEM
ITEM
RCU. Main/Sub
Clock display
RCU. CK
Room temperature sensor
Remote controller
crossover wiring
Terminal plate
for remote
controller wiring
1 2
Indoor unit 3
U1U2
Ground
buttons on the remote
/ ( ) buttons.
/ (TIMER) buttons.
.
DATA
Sub Main
24 hours 12 hours (AM/PM)
RCU. CK Normal
Main unit RCU

K Type

2-9. Caution

This unit may be used in a single-type refrigerant
system where 1 outdoor unit is connected to 1
indoor unit, and also in a system where 1 outdoor
unit is connected to multiple indoor units (max-
imum 4).
* If multiple indoor units are used, also refer to "2-16.

System Control".

The indoor and outdoor unit control PCB utilizes
a semiconductor memory element (EEPROM).
The settings required for operation were made at
the time of shipment.
Only the correct combinations of indoor and out-
door units can be used.
2-9
2