Address Setup Procedure; Automatic Address Setup; Header Unit Interface P.c. Board - Toshiba Super MMU-AP0091H Service Manual

8-4-3. Address Setup Procedure

In this air conditioner, it is required to set up address to the indoor unit before starting opera-
tion. Set up the address according to the following setup procedure.
1. Set up address after wiring work.
2. Be sure to turn on the power in order of indoor unit → outdoor unit. If turning on the power in the reverse
order, a check code [E19] (Error of No. of header units) is output. When a check code is output, turn on
the power again.
3. It requires maximum 10 minutes (Usually, approx. 5 minutes) to set up automatically an address to 1 line.
4. To set up an address automatically, the setup at outdoor side is necessary.
(Address setup cannot be performed by power-ON only.)
5. To set up an address, it is unnecessary to operate the air conditioner.
6. Manual address setup is also available besides automatic setup.
Automatic address : Setup from SW15 on the interface P .C. board of the header unit
Manual address
∗ It is temporarily necessary to set the indoor unit and wired to 1 : 1.
(In group operation and in time without remote controller)

Automatic Address Setup

Without central control : To the address setup procedure 1
With central control
(However, go to the procedure 1 when the central control is performed in a single refrigerant line.)
(Example)
Address setup procedure
Cable systematic diagram
Address setup procedure 1
1. Turn on power of indoor/outdoor units.
(In order of indoor → → → → → Outdoor)
2. After approx. 1 minute, check that U. 1. L08 (U. 1. flash)
is displayed in 7-segment display section on the interface
P .C. board of the header unit.
3. Push SW15 and start setup the automatic address.
(Max. 10 minutes for 1 line (Usually, approx. 5 minutes))
4. When the count Auto 1 → Auto 2 → Auto 3 is dis-
played in 7-segment display section, and it changes from
U. 1. - - - (U. 1. flash) to U. 1. - - - (U. 1. light) , the
setup finished.
5. When perform a central control, connect a relay
connector between [U1, U2] and [U3, U4] terminals in
the header unit.
: Setup from the weird remote controller
: To the address setup procedure 2
In case of central control in a single refrigerant line
To procedure 1
Outdoor Outdoor
Central control
remote controller
Indoor Indoor Indoor
Remote Remote Remote
controller controller controller
CAUTIONS
In case of central control over refrigerant lines
Outdoor
Central control
remote controller
Indoor Indoor
Remote
controller

Header unit interface P.C. board

94
To procedure 2
Outdoor
Indoor Indoor
Remote Remote
controller controller
SW04 SW05 SW15
D600 D601 D602 D603 D604
SW01 SW02 SW03
1 1 1
5
U1 U2 U3 U4
For internal For wiring of
wiring between central control
indoor and system
outdoor
Central control
remote controller
Indoor
3
2, 4
U5 U6
For internal
wiring between
outdoor units