Toshiba MCY-MHP0404HS-E Service Manual page 69

In the case of an increase in address-undefined indoor units
(extension, etc.)
To set up the indoor address of a unit with an address that is undefined due to the extension of indoor units or
replacement of P.C. board, etc., follow 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 "Manual address setup from the remote controller." above.
Method 2
Set up an address from the outdoor unit.
* Leave the addresses of the units for which addresses have already been set up as they are. Set up an address
only for the unit where the address is undefined. Addresses are allocated from lower numbers.
Setup procedure
Set up the outdoor units in the refrigerant line to which indoor units have been added, as follows.
1
Remove the relay connector between U1 / U2 and U3 / U4.
2
Turn on SW30-bit2 on the interface P.C. board in the outdoor unit.
*Turn off the power, and then execute the operation.
[U1, U2] and [U3, U4]
not connected
U3
CN02
U1 U2
U1 U2
A B
Remote
controller
Turn on the indoor / outdoor power for the refrigerant line for which an address is to be set up.
3
After approximately 1 minute, check that "U.1. - - -" is displayed on the 7-segment display.
4
Execute the following operation on the interface P.C. board of the outdoor unit.
S W 0 1 S W 0 2 S W
2 14
"AUTO1" "AUTO2"
5
When "U.1. - - -" is displayed on the 7-segment display, the setup operation finished.
Turn off the indoor / outdoor power.
6
Return to the following setup as before.
AMP Air Conditioning
Outdoor unit
U4
CN10
U1 U2
A B
Remote
controller
Indoor units to have their addresses initialized
0 3
2 After checking that "In.At" is displayed on the 7-segment display, push SW04 for 5 seconds or more.
"AUTO3" ...
[U1, U2] and
Outdoor unit
[U3, U4] connected
U3 U4
CN10
CN02
U1 U2
U1 U2 U1 U2
A B A B
Remote
controller
S W 0
"AUTO9" ... is counted and displayed on the 7-segment display.
82 68
[U1, U2] and
[U3, U4] connected
CN02
U1 U2
U1 U2
A B
Remote
controller
4
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Central controller
U1 U2
U3 U4
Outdoor unit
U3 U4
CN10