In Case Of Increase The Address-Undefined Indoor Units - Toshiba Super MMU-AP0091H Service Manual

In case of increase the address-undefined indoor units (Extension, etc.)
If set up the indoor address of which address is undefined accompanied with extension of indoor units, replace-
ment of P .C. board, etc, follow to the methods below.
Method 1
Set up an address individually from a wired remote controller.
(Line address, Indoor address, Group address, Central address)
For the setup method, refer to the above "Manual address setup from remote controller".
Method 2
Set up an address from the outdoor unit.
∗ Leave the address of the unit of which address has been already set up as it is.
Set up an address only to the unit of which address is undefined.
The addresses are allocated from the low number.
Setup procedure
Arrange the outdoor header units in the refrigerant line to which indoor units are added. (Figure below)
1. Remove the relay connector between [U1U2] and [U3U4].
2. Turn on SW30-2 on the interface P .C. board at outdoor header unit side if it is ON.
∗ Turn off the power, and then execute the operation.
Header unit
U3 U4
U1 U2 U5 U6
U1 U2
A B
Remote
controller
3. Turn on the indoor/outdoor power of which address is to be set up. After approx. 1 minute, check that
"U.1. - - -" is displayed on 7-segment display.
4. Execute the following operation on the interface P .C. board of the header unit.
SW01 SW02 SW03
2 14 2
"AUTO1" → "AUTO2" → "AUTO3" ... is counted and displayed on 7-degment display.
5. When "U.1. - - -" is displayed on 7-segment display, the setup operation finished.
Turn off the indoor/outdoor power.
6. Return the following setup as before.
• Relay connector
• SW30-2
• SW01, 02, 03
Follower unit Header unit Center unit
U3 U4
U1 U2 U5 U6
U1 U2
A B
Remote
controller
Added indoor unit
After checking that "In.At" is displayed on 7-segment display,
and then push SW04 for 5 seconds or more.
Follower unit
U3 U4 U3 U4
U1 U2 U5 U6 U1 U2 U5 U6
U1 U2 U1 U2
A B A B
Remote
controller
SW04
102
Central control
device
U1 U2
U3 U4
Header unit Center unit
U3 U4
U1 U2 U5 U6
U1 U2
A B
Remote
controller