Toshiba MMY-MUP0961HT6P-UL Service Manual page 133

Procedures for adding an indoor unit with communication method and address already set
In cases of adding a new indoor unit with the TU2C-Link setup or address setup already completed due to
relocation etc., perform the setup 1) to 3) below.
1) Communication method
• Set the communication method of the indoor unit and the already existing system to the same settings.
Method 1 The communication method and indoor terminating resistance can be set automatically after
performing "Clear communication method", by setting the address to the added indoor unit, and
then performing "Automatic setting of communication method".
Method 2 Change the indoor DN code (I.DN) [FC] of the additional indoor unit to match the
communication method of the existing system.
If the indoor unit to be added is in the farthest room, turn the indoor terminal resistance on, and
turn the indoor terminal resistance off for the other (already existing) indoor units.
2) Indoor terminal resistance
• If setting to TCC-Link communication method, turn the indoor terminal resistance OFF for every indoor unit
in the same system.
The indoor terminal resistance for every indoor unit can be turned off at once by performing the
communication method clear from the header outdoor unit.
• If setting to TU2C-Link communication method, turn the indoor terminal resistance for one of the indoor
units in the farthest room ON.
If which indoor unit is the unit in the farthest room is unknown, check the address for the indoor unit that
the indoor termination resistance has been automatically set by performing "communication method
automatic setup" after performing "communication method setup".
3) Address setup
• Change the system address to match the already-existing system.
• Make sure not to set duplicate indoor addresses.
Method 1 Perform the method "In case of adding an unaddressed indoor unit (due to expansion etc.)"
after setting the communication method of the indoor unit to be added to that of the already-
existing system, and clearing the address.
Method 2 Change the communication method setting and the address for the indoor unit to be added
manually from the indoor DN code (I.DN).
* The following functions are available under both TU2C-Link communication and TCC-Link communication.
Note however, that the address clear and automatic address settings will not function as intended if these
functions were to be performed under mixed communication methods.
• Clear all indoor addresses, system address, and group addresses at once... Set the rotary switch SW01/
SW02/SW03 on header outdoor unit to [2/1/2], and push SW04 for five seconds or longer.
• Clear all zone addresses at once ... Set the rotary switch SW01/SW02/SW03 on header outdoor unit to [2/
2/2], and push SW04 for five seconds or longer.
• Automatic address setting ... Push SW06 on header outdoor unit when all indoor units have no indoor
address set, and a "L08" error is occurring.
• Automatic address setting for unaddressed indoor units ... Set the rotary switch SW01/SW02/SW03 on
header outdoor unit to [2/14/2], and push the SW04 five seconds or longer.
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