MULTI TYPE

7-4-4. Check after Address Setup when Central Control System Is
Connected
When the central control system is connected, check that the following setup has finished after address setup.
(4)
(1) (5) (3)
(2)
U1
U2
Central remote
controller
U3
U4
Line address = 2
Line address = 1
To other refrigerant line
Other refrigerant line
Header unit (A)
Header unit (A)
Follower unit (B)
Follower unit (C)
U3
U4
U3
U4
U3
U4
U3
U4
Outdoor unit
U1 U2 U5 U6
U1
U2
U5
U6
U1 U2 U5 U6
U1 U2 U5 U6
(5)
Indoor unit
U1 U2 U1 U2 U1 U2 U1 U2
A B A B A B A B
Remote
controller
Remote
controller
Remote
controller
Relay
connector
Terminal
resistance
Line address
Main check items
(1)Is the relay connector of the header unit connected after address setup?
(2)Is the relay connector of the follower unit removed?
(3)Is the end resistance (SW30-bit 2) of the header unit with the smallest line address number
in the central control turned on? (Setup is unnecessary for follower units.)
(4)Is the terminal resistance (SW30-bit 2) of the header units, except for the line with the
smallest central control line address, turned off? (Setup is unnecessary for follower units.)
(5)Are addresses in the line address (SW13, SW14) not duplicated in each refrigerant line?
Check
NOTE
The figure above does not show all the electric wires.
For details, refer to the installation manuals for the outdoor unit, indoor unit, remote controller, or optional devices.
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