Check After Address Setup When Central Control System Is Connected - Toshiba Super MMU-AP0091H Service Manual

8-4-4. Check after Address Setup When Central Control System is Connected

When the central control system is connected, check the following setup has finished after address setup.
Central control units
U1 U2
U3 U4
Line address = 2
Other refrigerant line
Center unit (A) Header unit (A)
U3 U4
U1 U2 U5 U6
5
1) Is relay connector of the header unit connected after address setup?
Relay connector
2) Is relay connector of the follower unit removed?
3) Is the end resistance (SW03-2) of the header unit with the least
address number (in the central control line) turned on?
(Setup is unnecessary for follower unit.)
Terminal
resistance
4) Are the terminal resistance (SW30-2) of the header units in except
the line of which central control line address is the smallest turned
off? (Setup is unnecessary for follower unit.)
5) Are not addresses in the line address (SW13, SW14) duplicated in
Line address
each refrigerant line?
NOTE) The above table does not describe all the electric cablings. For details, refer to each installation manual
for outdoor unit, indoor unit, remote controller, and optional devices.
Line address = 1
Header unit (A)
4
U3
1
Outdoor unit
U1 U2
Earth
3-phase 380–415V
Leak interception
Main switch
U1 U2
Indoor unit
A B
1-phase 230V
Leak interception
Main switch Remote
controller
Main check items
103
3
5
Follower unit (B)
U4 U3 U4
U5 U6 U1 U2 U5 U6
U1 U2 U1 U2
A B A B
Remote Remote
controller controller
Other refrigerant line
2
Follower unit (C)
U3 U4
U1 U2 U5 U6
U1 U2
A B
Check