Toshiba MMY-MUP0721FT6P-UL Service Manual page 142

Resetting the address
(Resetting to the factory default (address undecided))
Method 1
Clearing each address separately using a wired remote controller.
Set the system address, indoor unit address and group address to "00Un" using a wired remote controller.
(For the setting procedure, refer to the address setting procedures using the wired remote controller on the
previous pages.)
* Address not set will be either "00Un" or "0099", depending on the type of the remote controller.
Central control address (I.DN [03]) • Indoor unit address (I.DN [13])
Remote controller Communication Type
U series TU2C-LINK
Line address (I.DN [12])
Remote controller Communication Type
U series TU2C-LINK
Group address (I.DN [14])
Communication Type
Remote controller
U series
TU2C-LINK
Method 2
Clearing all the indoor unit addresses on a refrigerate line at once from the outdoor unit.
1
Turn off the refrigerant line to reset to the factory default.
2
Turn on the indoor and outdoor units of the refrigerant line for which you want to initialize
the addresses. About one minute after turning on the power, confirm that the 7-segment
display on the header outdoor unit indicates "U.1. - - -" and operate the interface P.C. board
on the header outdoor unit of the refrigerant line as follows.
SW01 SW02 SW03
2 1 2
2 2 2
3
Confirm that the 7-segment display indicates "A.d. c.L." and set SW01, SW02 and SW03 to
1, 1, 1 respectively.
4
After finished clearing the address successfully, "U.1.Err" and "L08 " appear alternatively at
1 second intervals on the 7-segment display.
5
Set the addresses again after finishing the clearance.
Unfixed
00Un
Unfixed
00Un
Unfixed
00Un
SW04
Confirm that the 7-segment display indicates "A.d.buS"
and turn SW04 ON for more than five seconds.
Confirm that the 7-segment display indicates "A.d.nEt"
and turn SW04 ON for more than five seconds.
Display order
• • • ⇔ 0128 ⇔ 00Un ⇔ 0001 ⇔ • • •
Display order
• • • ⇔ 0128 ⇔ 00Un ⇔ 0001 ⇔ • • •
Display order
• • • ⇔ 0002 ⇔ 00Un ⇔ 0000 ⇔ • • •
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Clearable addresses
System/indoor unit/group address
Central control address