Toshiba MMU-AP0091H service manual Setup procedure, SW01 SW02 SW03 SW04

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.

8-4-4. Check after Address Setup When Central Control System is Connected

When the central control system is connected, check the following setup has finished after address setup.

(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)

Central control units

U1 U2

U3 U4

	Line address = 2					Line address = 1		5
Other refrigerant line			C	Headernter unitunit(A)(A) 4	Header unit (A)
		U3 U4					U3 U4

1

Outdoor unit

U1 U2 U5 U6 U1 U2 U5 U6

Earth

3

Follower unit (B)

U3 U4

U1 U2 U5 U6

2 Other refrigerant line

Follower unit (C)

	U3 U4
U1 U2	U5 U6

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 OFF.

∗ Turn off the power, and then execute the operation.

Central control

device

U1 U2

U3 U4

53-phase 380–415V, 50Hz Leak interception

Main switch

Header unit

Follower unit

HeaderCent

unitit

Follower unit

HeaderCent

unitit

U3 U4

U3 U4

U3 U4

U3 U4

U3 U4

93

U1 U2

U5 U6

U1 U2

U5 U6

U1 U2

U5 U6

U1 U2

U5 U6

U1 U2

U5 U6

U1 U2

U1 U2

U1 U2

U1 U2

U1 U2

A

B

A B

A

B

A B

A

B

U1 U2

Indoor unit

A B

1-phase 220–240V, 50Hz Leak interception

Main switch Remote controller

U1	U2			U1	U2			U1	U2
		A	B			A	B			A	B

Remote Remote

controller controller

Remote	Remote	Remote	Remote
controller	controller	controller	controller

Added indoor unit

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		SW04
2	14	2	After checking that “	” is displayed on 7-segment
			display, and then push SW04 for 5 seconds or more.
“AUTO1” →		“AUTO2” → “AUTO3” → … →		“AUTO9” … is counted and displayed on 7-degment display.

•Return the SW01, 02, 03 setup as before.

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

		Main check items	Check
Relay connector	1)	Is relay connector of the header unit connected after address setup?
	2)	Is relay connector of the follower unit removed?
	3)	Is the end resistance (SW30-2) of the header unit with the least refriger-
		ant line address number (in the central control line) turned on?
Terminal		(Setup is unnecessary for follower unit.)
resistance	4)	Are the terminal resistance (SW30-2) of the header units except for the
		line of which central control refrigerant line address is the smallest,
		turned off? (Setup is unnecessary for follower unit.)
Line address	5)	Are not addresses in the line address (SW13, SW14) duplicated in each
		refrigerant line?

Note) The above table does not describe all the electric cablings. For details, refer to each installation manual for outdoor unit, indoor unit, remote controller, and optional devices.