Toshiba MMY-MUP0801HT8JP Service Manual page 122

4. Open the access door cover and follow the steps below to set the address.
REQUIREMENT
• High voltage parts exist in the electrical control box.
If you set addresses on an outdoor unit, operate the unit through the access door as shown in the
illustration below to avoid electric shock. Do not remove the cover of electrical control box.
* After finishing operations, close the access door cover and fix it with the screw.
Access door cover
1
Turn on indoor units first, and then turn on outdoor units.
2
About 1 minute after turning the power on, confirm that the 7-segment display on the
interface P.C. board of the header outdoor unit indicates
alternately at 1 second intervals.
3
Press SW06 to start the automatic address setting.
(It may take up to 10 minutes (normally about 5 minutes) to complete one line's setting.)
4
The 7-segment display indicates
The setting is complete when the display changes to
U. 1. - - - (U. 1. light)
5
Repeat steps 2 to 4 for other refrigerant lines.
6
Set the central control address.
(For the setting of the central control address, refer to the installation manuals of the central control
devices.)
Interface P.C. board on the header outdoor unit
Cover of the electrical control box
Auto 1
.
- 122 -
Fixing screw for the
access door cover
U. 1. Err (U. 1. flash)
Auto 2 Auto 3 .
U. 1. - - - (U. 1. flash)
3
←
2,4
←
and
L08
or