Carrier MMY-MAP0964FT6UL - Page 91

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*The items in bold font must be set manually.
Outdoor unit’s interface
P.C. board
Header unit Follower unit Header unit Follower unit Header unit Factory default
SW13, 14
(Line (system) address)
1
(No setting
required)
2
(No setting
required)
31
Dip switch 2 of SW30
(Terminator of indoor/
outdoor communication
line and central control
line)
ON
(No setting
required)
Set to OFF
after setting
addresses.
(No setting
required)
Set to OFF
after setting
addresses.
ON
Relay connector
Connect after
setting
addresses.
Open
Connect after
setting
addresses.
Open
Connect after
setting
addresses.
Open
Line (system) address 1 1223
Indoor unit address 1 2121
Group address 0 0120
A
U1 U2
U3 U4 U3 U4 U3 U4 U3 U4 U3 U4
U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2
U1 U2 U1 U2 U1 U2 U1 U2 U1 U2
U5 U6
BAB ABAB AB
Central
remote
controller
Relay
connector
Relay
connector
Relay
connector
Header unit
Header unit
Header unit
Follower unit
Follower unit
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Individual
Group
Indoor units
(automatic setting)
Switch setting (setting example when controlling 2 or more refrigerant lines centrally)
Outdoor units (setting manually)
CAUTION
Relay connector connection
Never connect relay connectors between the [U1, U2] and [U3, U4] terminals before completing address
setting of all the refrigerant lines. Otherwise, the addresses cannot be set correctly.