Indicating (Marking) The Indoor And Outdoor Unit Combination Number; Main-Sub Remote Controller Control - Sanyo C4272R Service Manual

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 erased to indicate the numbers in an easily
visible location on the indoor units (near the indoor unit nameplates).
Example: (Outdoor) 1 - (Indoor) 1-1...(Outdoor) 2 - (Indoor) 2-2...
(2) These numbers will be needed for maintenance. Be sure to indicate them.
* Use the remote controller to check the addresses of the indoor units. Press and hold the
button for 4 seconds or longer (simple settings mode). Then press the button
address. (Each time the button is pressed, the address changes as follows: 1-1, 2-1, ....) The indoor unit fan
operates only at the selected indoor unit. Confirm that correct fan is operating, and indicate address on the
indoor unit.
Press the button again to return to the normal remote controller mode.
For details, refer to the separate handbook.

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 indoor unit.
(A maximum of 2 remote controllers can be connected.)
Connecting 2 remote controllers to
control 1 indoor unit
Remote controller
switch (main)
Optional
1 2
1 2
Indoor unit
U1U2
Ground
1 2
Outdoor unit
Ground
(Setting procedure)
(1) Set 1 of the 2 connected remote controllers as the
main remote controller.
(2) On the other remote controller (sub remote controller),
change the remote controller address connector on the
reverse side of the remote controller switch PCB from
the Main position to the Sub position.
The remote controller will now function as the sub
remote controller.
Remote controller
switch (sub)
Optional
1 2
Remote controller wiring
Terminal plate
for remote
controller wiring
Remote controller
VI-9
6. Test run
button and
and select the indoor
Remote controller
address connector
Main
RCU check
Sub
RCU. ADR
Fig. 6-8
SM831148
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