Toshiba Super MMY-MAP0801HT7 - How to Set up Resistance of the End Terminal; Indoor Side (Automatic Setup)

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8. How to set up resistance of the end terminal
When all the address setups have finished in the same refriger-
ant circuit system, put the resistance of the end terminals in the
same central control line into one.
• Remain only SW03-2 of the header outdoor unit with the least
circuit system address number as it is ON.
(With end terminal resistance)
• Set up SW03-2 of the other header outdoor units to OFF.
(Without end terminal resistance)
9. Connect the relay connector between [U1U2] and [U3U4] of the
header unit for each refrigerant line.
Point
Relay connector — NOTE —
Never connect a relay connector until address setup for all the refrigerant lines finishes;
otherwise address cannot be correctly set up.
Header unit interface P.C. board
SW11
1
ON
2 3 4
SW12
1
ON
2 3 4
SW06
1
ON
2 3 4
SW07
1
ON ONON ON
2 3 4
SW09SW08
11 2 3 4
SW10
1 2 3 4
SW13
1
ON
2 3 4
SW14
1
ON
2 3 4
SW30
SW30
1
ON
2
Before address setup
During setup of address
After address setup
SW13, 14
(Line address)
SW30-2
Terminal-end resistance
of indoor/outdoor communi
cation line/central control
communication line
Relay connector
Indoor side (Automatic setup)
Line address
Indoor unit address
Group address
1
1
0
1
2
0
2
1
1
2
2
2
3
1
0
Connect short
after
address setup
Connect short
after
address setup
Connect short
after
address setup
Setup at shipment
from factory
U3 U4
U1 U2 U5 U6
U1 U2
A B
Header
unit
Individual Group
Remote
controller
U3 U4
U1 U2 U5 U6
U1 U2
A B
Follower unit
Remote
controller
Relay
connector
U3 U4
U1 U2 U5 U6
U1 U2
A B
Remote
controller
U3 U4
U1 U2 U5 U6
U1 U2
A B
Follower unit
U3 U4
U1 U2 U5 U6
U1 U2
A B
Header unit
Remote
controller
Relay
connector
U3 U4
U1 U2 U5 U6
U1 U2
A B
Header
unit
Header unit
Header unit Header unit
Individual Group
Remote
controller
U3 U4
21
SW30
ON
OFF
U1 U2 U5 U6
U1 U2
A B
Follower unit
Remote
controller
Relay
connector
U3 U4
U1 U2 U5 U6
U1 U2
A B
Remote
controller
U3 U4
U1 U2 U5 U6
U1 U2
A B
Follower unit
U3 U4
U1 U2 U5 U6
U1 U2
A B
Remote
controller
Relay
connector
Relay
connector
Open
ON
1 2
12 3
3 1
Header unit Follower unit Follower unitHeader unit Header unit
ON
Open Open
(Setup is
unnecessary.)
(Setup is
unnecessary.)
OFF after
address setup
OFF after
address setup
(Setup is
unnecessary.)
(Setup is
unnecessary.)
Outdoor interface
P.C. board
21
SW30
ON
OFF
21
SW30 SW30
ON
OFF
21
SW30
ON
OFF
21
ON
OFF
10. Then set up the central control address.
(For the central control address setup, refer to the Installation manual of the central control devices.)