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7-4-5. 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.
Central remote
controller
U1 U2
U3 U4
Line address = 2
Other refrigerant line
Header unit (A)
U3 U4
Uh
Uv
Uc
U1 U2
U5 U6
(3)
Terminator
(1) Is the terminator resistor (SW100-bit1) of the header unit with the smallest line address number in
resistor
the central control turned on? (Setup is unnecessary for follower units. (Factory default : OFF))
(2) Is the terminator resistor (SW100-bit1) of the header units, except for the line with the smallest
central control line address, turned off? (Setup is unnecessary for follower units.
(Factory default : OFF))
Line address (3) Are addresses in the line address (SW101,SW102) not duplicated in each refrigerant line?
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.
(1)
Line address = 1
Header unit (A)
U3 U4
Outdoor unit
Uv
U1 U2
U1 U2
Uv
Indoor unit
A
Remote
controller
Main check items
- 152 -
(3) (2)
Follower unit (B)
U3 U4
Uh
Uh
Uc
Uv
U5 U6
U1 U2
U1 U2
U1 U2
Uv
Uv
B
A
B
Remote
controller
To other refrigerant line
Follower unit (C)
U3
U4
Uh
Uc
Uv
U5 U6
U1 U2
U1 U2
Uv
A
B
A
B
Remote
controller
Check
Uc
U5 U6
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