Toshiba MMY-MAP1404 Series User manual

Q ui c k referen c e
R410A
FILE NO. :A11-005

Refrigerant Piping
Allowable Length of Refrigerant Pipes and Allowable Height Difference between Units
D
Follower unit
Height
difference
between
outdoor
units
H3 ≤5 m
Height
difference
between
indoor units:
H2 ≤40 m
Outdoor unit
Ld
Lc
Lb
La
LB
LA
Outdoor unit connection piping kit
(For linking of outdoor units)
Outdoor unit connecting pipes
The longest piping between outdoor units:
L0 ≤25 m
Main piping L1
Height
difference
between
outdoor
and indoor
units:
H1 ≤70 m
First branching
section
L3
Y-shaped
branching joint L4 L5 L6
Indoor unit
fghij
The longest piping length from the first branch: Li ≤90 m
The longest piping length: L ≤235 m
Indoor unit
abcde
(j)
Indoor unit connecting
pipe
Branching header
Y-shaped branching
joint
L7
A
Header
unit
B
Follower
unit
C
Follower
unit
01

System Restriction
Cautions for Installation
• Set the outdoor unit first connected to the bridging pipe to the indoor units as the header unit.
• Install the outdoor units in order of their capacity codes: A (header unit) ≥B ≥C ≥D
• When connecting gas pipes to indoor units, use Y-shaped branching joints to keep pipes level.
• When piping to outdoor units using Outdoor unit connection piping kits, intersect the pipes to the outdoor unit and
those to indoor units at a right angle as shown in figure 1 on “INSTALLATION MANUAL (6. INSTALLATION OF
THE OUTDOOR UNIT)”. Do not connect them as in figure 2 on “INSTALLATION MANUAL (6. INSTALLATION OF
THE OUTDOOR UNIT)”.
Allowable Length and Allowable Height Difference of Refrigerant Piping
∗1: Farthest outdoor unit from the first branch: (D), farthest indoor unit: (j)
∗2: If the total capacity of outdoor units is 46HP or more, make the equivalent length 70m (real length 50m) or less.
∗3: Make the difference 65m or less if the height difference between outdoor and indoor units (H1) is more than 3m.
∗4: Make the difference 50m or less if the height difference between indoor units (H2) is more than 3m.
∗5: Make the difference 30m or less if the height difference between indoor units (H2) is more than 3m.
Outdoor unit combination
Total capacity of outdoor units
Indoor unit connection
Total capacity of indoor units
(varies depending on the height difference between indoor units.)
Up to 4 units
Up to 48 HP
Up to 48 units
H2 ≤15m 135% of outdoor units’ capacity
15m < H2 105% of outdoor units’ capacity
02
Total extension
of pipe (liquid
pipe, real length)
Farthest piping length L (∗1) Equivalent length
Real length
Main piping length Equivalent length
Real length
Farthest equivalent piping length from the first branch Li (∗1)
Farthest equivalent piping length between outdoor units L0 (∗1)
Maximum equivalent piping length of pipes connected to
outdoor units
Maximum real length of pipes connected to indoor units
Maximum equivalent length between branching sections
Height between outdoor Upper outdoor units
and indoor units H1 Lower outdoor unit
Height between indoor units H2
Height between indoor units H3
Pipe
length
Height
difference
Item
Less than 96kW Less than 34HP or less
96kW or more 34HP or more
Allowable
value
300m
500m
235m
190m
120m (∗2)
100m (∗2)
90m (∗3)
25m
10m
30m
50m
70m (∗4)
40m (∗5)
40m
5m
Pipes
LA + LB + La + Lb + Lc + Ld + L1 +
L2 + L3 + L4 + L5 + L6 + L7 +
a + b + c + d + e + f + g + h + i + j
LA + LB + Ld + L1 +
L3 + L4 + L5 + L6 + j
L1
L3 + L4 + L5 + L6 + j
LA + LB + Ld (LA + Lb, LA + LB + Lc)
La, Lb, Lc, Ld
a, b, c, d, e, f, g, h, i, j
L2, L3, L4, L5, L6, L7
—
—
—
—

Adding Refrigerant03
After finishing vacuuming, exchange the vacuum pump with a refrigerant cylinder and start additional charging of refrigerant.
Calculation of additional refrigerant charge amount
Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipes at the local site.
For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.
NOTE
If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without additional refrigerant.
Heat pump type Outdoor unit type MAP080 MAP100 MAP120 MAP140 MAP160
Charging amount (kg) 11.5
Table 1
Liquid pipe dia. (mm)
Additional refrigerant amount/1m liquid pipe (kg/m)
6.4
0.025
9.5
0.055
12.7
0.105
15.9
0.160
19.1
0.250
22.2
0.350
Table 2
Standard type
High Efficiency type
Combined HP
(HP)
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
16
24
26
28
30
32
34
36
38
40
42
44
46
48
Combined outdoor units
(HP)
8HP — — —
10HP — — —
12HP — — —
14HP — — —
16HP — — —
10HP 8HP — —
10HP 10HP — —
12HP 10HP — —
12HP 12HP — —
16HP 10HP — —
16HP 12HP — —
16HP 14HP — —
16HP 16HP — —
12HP 12HP 10HP —
12HP 12HP 12HP —
16HP 12HP 10HP —
16HP 12HP 12HP —
16HP 14HP 12HP —
16HP 16HP 12HP —
16HP 16HP 14HP —
16HP 16HP 16HP —
8HP 8HP — —
8HP 8HP 8HP —
10HP 8HP 8HP —
10HP 10HP 8HP —
10HP 10HP 10HP —
8HP 8HP 8HP 8HP
10HP 8HP 8HP 8HP
10HP 10HP 8HP 8HP
10HP 10HP 10HP 8HP
10HP 10HP 10HP 10HP
12HP 10HP 10HP 10HP
12HP 12HP 10HP 10HP
12HP 12HP 12HP 10HP
12HP 12HP 12HP 12HP
C (Corrective amount
of refrigerant) (kg)
1.5
2.5
3.5
8.5
10.5
0.0
3.0
5.0
7.5
8.5
9.5
11.5
12.5
3.0
4.0
6.0
7.0
8.0
10.0
12.0
14.0
0.0
-4.0
-4.0
-2.0
0.0
-6.0
-6.0
-6.0
-6.0
-5.0
-4.0
-2.0
0.0
2.0
Additional re frigerant Additional refrigerant charge Corrective amount of refrigerant depending
charge amount at local site = Real length of liquid pipe × amount per 1 m liquid pipe + on HP of cooperating outdoor units
(Table 1) (Table 2)
Charging of refrigerant
• Keeping the valve of the outdoor unit closed, be sure to charge the liquid refrigerant into the service port at the liquid side.
• If the specified amount of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas sides, operate the
air conditioner in COOL mode, and then charge refrigerant into service port at the gas side.
In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.
• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

Liquid tank
(TL)
PMV1 4-way valve
Check valve
High-pressure sensor
(TD2)
Accumulator
(TS1)
(SV2)
Low-pressure sensor
(SV5)
(TE1)
M
(SV3D)
PMV2
(
TK2
)
Right side
(SV3B)
(
TK1
)
(SV3A)
(TD1)
(TK4)
(SV3E)
(
TK5
)
A3
Oil header
Oil separator
Fan
(
SV3C)
Reducer
(TO)
SV
SV
SV
SV
SV
SV
SV
SV
SV
SV
Heat exchanger
Left side
Fan motor
FP
Heat exchanger
Fusible
plug
Check
valve
Check
valve
Check
valve
Check
valve
Check valve
Check valve
Check
valve
(SV41) (SV42)
High-pressure
switch
High-pressure
switch
Compressor
2
(Inveter)
Compressor
1
(Inveter)
Liquid side
packed valve
Gas side
packed valve
Balance pipe
packed valve
Symbol
Solenoid
valve
Capillary
tube Check joint Strainer
Temperature
sensor
Distributor
Outdoor Unit (14, 16HP)
Model: MMY-MAP1404∗∗
∗∗
∗, MMY-MAP1604∗∗
∗∗
∗
04Refrigerant Piping Systematic Drawing

05
(TL)
PMV1
(TD2)
(TS1)
(SV2) Low-pressure sensor
(TE1)
M
(SV3D)
PMV2
(TK2)
(SV3B)
(TK1)
(SV3A)
(TD1)
(TK4)
(SV3E)
(TK5)
(SV41)
(SV42)
PMV4
Fan
(TE2)
Sub heat exchanger at left side
(TD3)
(SV43)
(TK3)
(SV6)
(
TO
)
(SV3F)
(SV3C)
SV
SV
SV
SV SV
SV
SV
SV
SV
SV
SV
Main heat exchanger
Main heat exchanger
Sub heat exchanger at right side
Fan motor
FP
SV
Symbol
Solenoid
valve
Capillary
tube Check
valve Check joint Strainer
Temperature
sensor
Distributor
Right side
Left side
Check valve
Check valve
4-way valve
High-pressure sensor
Fusible
plug
Liquid tank
Oil separator
High-pressure
switch
High-
pressure
switch High-pressure
switch
Accumulator
Oil header
Compressor
1
(Inverter)
Compressor
2
(Inverter)
Compressor
3
(Inverter)
Check valve
Check valve
Liquid side
packed valve
Gas side
packed valve
Balance pipe
packed valve
Outdoor Unit (8, 10, 12HP)
Model: MMY-MAP0804∗∗
∗∗
∗, MMY-MAP1004∗∗
∗∗
∗, MMY-MAP1204∗∗
∗∗
∗
Refrigerant Piping Systematic Drawing (continue)

Functional outline
(Connector CN321: White)
1) Supplies oil reserved in the oil header during ON time.
(Connector CN321: White)
1) Returns oil supplied in the balance pipe to the compressor.
(Connector CN321: White)
1) Pressurizes oil reserved in the oil header during ON time.
(Connector CN322: White)
1) Reserves oil in the oil separator during OFF time.
2) Returns oil reserved in the oil separator to the compressor during ON time.
(Connector CN322: White)
1) Turns on during operation and balances oil between compressors.
(Connector CN323: White)
1) Controls oil level balances between compressors.
(Hot gas bypass) (Connector CN311: White)
1) Low pressure release function
2) High pressure release function
3) Gas balance function during stop time
(Start compensation valve of compressor)
(SV41 Connector CN312: Blue, SV42 Connector CN312: Blue, SV43 Connector CN313: Red)
1) For gas balance start
2) High pressure release function
3) Low pressure release function
(Connector CN314: White)
1) Preventive function for high-pressure rising in heating operation
(Connector CN315: White)
1) Liquid bypass function for discharge temperature release (cooling bypass function)
(Connector CN317:Blue)
1) Cooling/heating exchange
2) Reverse defrost
(Connector CN300, 301: White)
1) Super heat control function in heating operation
2) Liquid line shut-down function while follower unit stops
3) Under cool adjustment function in cooling operation
4) Exchange function between main and sub exchangers in cooling operation
(Connector CN303: Red)
1) Exchange function between main and sub exchangers in cooling operation
2) Preventive function for high-pressure rising in heating operation
1) Prevention for rapid decreasing of oil (Decreases oil flowing to the cycle)
2) Reserve function of surplus oil
(TD1 Connector CN502: White, TD2 Connector CN503: Pink, TD3 Connector CN504: Blue)
1) Protection of compressor discharge temp.
2) Used for discharge temperature release
(Connector CN505: White)
1) Controls PMV super heat in heating operation
(Connector CN520: Green)
1) Controls defrost in heating operation
2) Controls outdoor fan in heating operation
(Connector CN521: Red)
1) Controls exchange function between main and sub exchangers
(TK1 Connector CN531: Black, TK2 Connector CN532: Green, TK3 Connector CN533:Red, TK4 Connector CN534:Yellow,
TK5 Connector CN535: Red)
1) Judges oil level of the compressor
(Connector CN523: White)
1) Detects under cool in cooling operation
(Connector CN507: Yellow)
1) Detects outside temperature
(Connector CN501: Red)
1) Detects high pressure and controls compressor capacity
2) Detects high pressure in cooling operation, and controls the fan in low ambient cooling operation
3) Detects under cool in indoor unit in heating operation
(Connector CN500: White)
1) Detects low pressure in cooling operation and controls compressor capacity
2) Detects low pressure in heating operation, and controls the super heat
(Compressor 1 Connector CN331: White, Compressor 2 Connector CN332: Blue, Compressor 3 Connector CN333: Black)
1) Prevents liquid accumulation to compressor
(Connector CN334: Red)
1) Prevents liquid accumulation to accumulator
1) Oil balancing in each outdoor unit
Functional part name
SV3A
SV3B
SV3C
SV3D
SV3E
SV3F
Solenoid valve
SV2
SV41
SV42
SV43
SV5
SV6
4-way valve
PMV1, 2
Pulse motor valve
PMV4
Oil separator
TD1
TD2
TD3
TS1
TE1
Temp. Sensor TE2
TK1, TK2,
TK3, TK4,
TK5
TL
TO
High pressure
sensor
Pressure sensor
Low pressure
sensor
Compressor
Heater case heater
Accumulator
case heater
Balance pipe
Explanation of Functional Parts
06

Description
Compressor breakdown
Compressor error (lockup) MG-CTT error
Current detection circuit error
TD1 sensor miswiring (incomplete insertion)
Activation of low-pressure protection
Low oil level protection
Error in temperature sensor for oil level detection
TD2 sensor miswiring (incomplete insertion)
Oil level detection circuit error
TD3 sensor miswiring (incomplete insertion)
Duplicated indoor header unit
Duplicated outdoor line address
Duplicated priority indoor unit (as displayed on priority indoor unit)
Duplicated priority indoor unit (as displayed on indoor unit other
than priority indoor unit)
Connection of group control cable to standalone indoor unit
Indoor group/addresses not set
Indoor capacity not set
Outdoor capacity not set
Duplicated central control address
Too many outdoor units connected
Error in No. of IPDUs
External interlock of indoor unit
Extended IC error
Indoor fan motor error
Discharge temperature TD1 error
Activation of highpressure SW
Detection of open phase/phase sequence
Inverter DC voltage (Vdc) error (compressor) MG-CTT error
Heat sink overheating error
Indoor overflow error
Indoor fan motor error
Outdoor liquid backflow detection error
Gas leakdetection (TS1 condition)
Gas leak detection (TD condition)
Discharge temperature TD2 error
Discharge temperature TD3 error
4-way valve reversing error
Activation of high-pressure protection
Outdoor fan IPDU error
G-TR shortcircuit protection error
Compressor position detection circuit error
Other indoor error (group follower unit error)
Check Code List
Description
Indoor-remote controller communication error
(detected at remote controller end)
Remote controller transmission error
Indoor-remote controller communication error
(detected at indoor end)
Indoor-outdoor communication circuit error
(detected at indoor end)
Dropping out of indoor unit
Indoor-outdoor communication circuit error
(detected at outdoor end)
Duplicated indoor address
Duplicated master remote controller
Indoor inter- MCU communication error
Automatic address starting error
Indoor unit not found during automatic address setting
Too many indoor units connected
Error in communication between indoor header and follower units
Error in number of outdoor header units
Connection to other line found during automatic address setting
Outdoor-outdoor communication transmission error
Duplicated follower outdoor address
Dropping out of outdoor unit
Outdoor follower unit error
IPDU communication error
Indoor TCJ sensor error
Indoor TC2 sensor error
Indoor TC1 sensor error
TD1 sensor error
TD2 sensor error
TE1/TE2 sensor error
TL sensor error
To sensor error
Indoor TA sensor error
Indoor TF sensor error
TS1 sensor error
TH sensor error
Outdoor temperature sensor wiring error (TE1, TL)
Outdoor pressure sensor wiring error (Pd, Ps)
TD3 sensor error
Ps sensor error
Pd sensor error
Other indoor error
Outdoor EEPROM error
Main
remote
controller
H01
H02
H03
H05
H06
H07
H08
H15
H16
H25
L03
L04
L05
L06
L07
L08
L09
L10
L20
L28
L29
L30
—
P01
P03
P04
P05
P07
P10
P12
P13
P15
P17
P18
P19
P20
P22
P26
P29
P31
Main
remote
controller
E01
E02
E03
E04
E06
—
E08
E09
E10
E12
E15
E16
E18
E19
E20
E23
E25
E26
E28
E31
F01
F02
F03
F04
F05
F06
F07
F08
F10
F11
F12
F13
F15
F16
F22
F23
F24
F29
F31
07
Check Codes Displayed on Remote Controller and SMMS-i Outdoor Unit
(7-Segment Display on I/F Board) and Locations to Be Checked

Address Setup 08
Check at Main Power-on
After turning on the main power of the indoor units and outdoor unit in the refrigerant line to conduct a test
operation, check the following items in each outdoor and indoor unit.
(After turning on the main power, be sure to check in order: indoor unit →outdoor unit.)
<Check on the outdoor unit>
(1) Check that all the rotary switches, SW01, SW02, and SW03, on the interface PC board of the header unit are
set to “1.”
(2) If another check code is displayed on the 7-segment display [B], remove the cause of the problem referring to
Section, “TROUBLESHOOTING”.
(3) Check that “L08” is displayed on the 7-segment display [B] on the interface PC board of the header unit. (L08:
Indoor address not set up)
(If the address setup operation has already been completed during servicing, etc., the above check code is not
displayed, and only “U1” is displayed on the 7-segment display [A].)
<Check on the indoor unit>
(1) Display check on the remote controller (in the case of a wired remote controller)
Check that a frame, as shown in the following figure at left, is displayed on the LC display section of the remote
controller.
If no frame is displayed, as shown in the above figure at right, the remote controller does not have a normal
supply of power; check the following items.
• Check the power supply of the indoor unit.
• Check the wiring between the indoor unit and the remote controller.
• Check whether there is a cutoff of wire around the indoor control PC board or not, and check for connection
failures of the connectors.
• Check for failure of the transformer for the indoor electrical control box.
• Check for failure of the indoor control PC board
Interface PC board
SW01 SW02 SW03
SW04
D600 D601 D602 D603 D604
SW15SW05
Push switches
Rotary switches
7-segment display
[A]
7-segment display
[B]
Normal status
(
Power su
pp
l ied and o
p
eration sto
pp
ed
)
When power is not supplied normally
Good No good
TEMP. ON / OFF
SET
TIME
TEST
FILTER
RESET
CL
SAVE
SWING/FIX
VENT
UNIT LOUVER
TIMER SET MODEFAN
TEMP. ON / OFF
SET
TIME
TEST
FILTER
RESET
CL
SAVE
SWING/FIX
VENT
UNIT LOUVER
TIMER SET MODEFAN

Precautions
(1) Address setup is not performed simply by turning on the power supply.
(2) For indoor units, address setup can be done either by manual address setup or by automatic address setup:
Automatic address setup: Setup from SW15 on the interface PC board of the header unit
Manual address setup: Setup from the wired remote controller.
(For details, refer to “Address Setup Procedure.”)
(3) Automatic setup usually takes about 5 minutes per line. In some cases, however, it may take up to 10 minutes.
(4) It is unnecessary to operate the air conditioner to achieve address setup.
Address Setup and Check Procedure
Interface PC board
SW01 SW02 SW03
SW04
D600 D601 D602 D603 D604
SW15SW05
Push switches
Rotary switches
7-segment display
[A]
7-segment display
[B]
Address Setup (continue)09
Item
Indoor unit
power-on
Outdoor unit
power-on
7-segment
display check
Address setup
start
Display check
after setup
System
information
check after setup
Operation and check contents
Turn on the power of the indoor unit for the refrigerant line for which the address is to be
set up.
Turn on the power of all the outdoor units for the refrigerant line for which the address is to be
set up.
Check that “L08” is displayed on the 7-segment display [B] on the interface PC board of the
header unit in the system where the address is to be set up.
Confirm the items in “Address Setup Procedure,” and then set up the address according to the
operation procedure. (Be careful to note that the setup operation may differ in group control
and central control systems.)
Note:
The address cannot be set up if switches are not operated.
• After address setup, “U1” “ ” is displayed on the 7-segment display.
• For follower outdoor units, “U2” to “U4” are displayed on the 7-segment display [A].
• If an error code is displayed on the 7-segment display [B], remove the cause of the problem
referring to “TROUBLESHOOTING.”
Using the 7-segment display function, check the system information of the scheduled system.
(This check is executed on the interface PC board of the header unit.)
System capacity
Number of connected
outdoor units
Number of connected
indoor units
Rotary switch setup
SW01 SW02 SW03
123
133
143
After the above checks, return rotary switches SW01, SW02, and SW03 to 1/1/1.
Procedure
1
2
3
4
5
6
7-segment display
[A] [B]
[Number of [H P]
horsepower]
[Number of units] [ P]
[Number of
connected units]

10
Address Setup Procedure
No central control: go to Address setting procedure 1
Central control of 2 or more refrigerant lines: go to Address setting procedure 2
Address setting procedure 1
1Turn on indoor units first, and then turn on outdoor units.
2About one minute after turning the power on, confirm that the 7-segment display on the interface
P.C. board of the header outdoor unit indicates. U. 1. L08 (U. 1. flash)
3Push SW 15 to start the automatic address setting.
(It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)
4The 7-segment display indicates. Auto 1 →→
→→
→Auto 2 →→
→→
→Auto 3
After the indication, U. 1. - - - (U. 1. flash) starts flashing on the display.
When the flashing stops and U. 1. - - - (U. 1. light) remain lit on the display, the setting is complete.
Interface P.C. board on the header outdoor unit
(Example) When controlling a single refrigerant line
centrally
When controlling 2 or more refrigerant lines
centrally
Address setting
procedure To procedure 1 To procedure 2
System wiring
diagram
Outdoor
Indoor Indoor
Indoor Indoor
Outdoor
Central
remote
controller
Central
remote
controller
Central
remote
controller
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Outdoor
Indoor Indoor Indoor Indoor
Outdoor
Remote
controller
Remote
controller
SW04 SW05 SW15
SW01 SW02 SW03
D600 D601 D602 D603 D604
3
2,
4
REQUIREMENT
• When 2 or more refrigerant lines are controlled as a group, be sure to turn on all the indoor units in the group
before setting addresses.
• If you set the unit addresses of each line separately, each line’s header indoor unit is set separately. In that
case, the CODE No. “L03” (Indoor header unit overlap) is indicated as running starts. Change the group
address to make one unit the header unit using wired remote controller.
FILE NO. :A11-001

Address setting procedure 2
1Set a system address for each system using SW 13 and 14 on the interface P.C. board on the header
outdoor unit of each system.
(Factory default: Address 1)
NOTE
Be sure to set a unique address on each system.
Do not use a same address as another system (refrigerant line) or a custom side.
Interface P.C. board on the header outdoor unit
(Example) Controlling 2 or more refrigerant lines as a group
System wiring
diagram Indoor Indoor IndoorIndoor
Outdoor
Outdoor
Remote
controller
(Group control)
SW06 SW07 SW09 SW10
SW11 SW12 SW13 SW14
1234 1234 1234 1234
1234 1234 1234 1234
SW13 SW14
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
O
×
O
×
O
×
O
×
O
×
O
×
O
×
×
O
O
×
×
O
O
×
×
O
O
×
×
×
×
×
×
O
O
O
O
×
×
×
×
O
O
×
×
×
×
×
×
×
×
O
O
O
O
O
O
2341234
SW13 SW14
1
15
16
17
18
19
20
21
22
23
24
25
26
27
28
×
×
O
O
O
O
O
O
O
O
O
O
O
O
×
O
×
O
×
O
×
O
×
O
×
O
×
O
O
O
×
×
O
O
×
×
O
O
×
×
O
O
O
O
×
×
×
×
O
O
O
O
×
×
×
×
O
O
×
×
×
×
×
×
×
×
O
O
O
O
2341234
Not used for setup of line address (do not change setup.)
Line
address
Line
address
Line address switches on the outdoor interface P.C. board ( O : switch ON, × : switch OFF )
Address Setup (continue)11

2Be sure to disconnect the relay connectors between the [U1U2] and [U3U4] terminals on all the header
outdoor units that will be connected to the central control. (Factory default: disconnected)
3Turn on indoor units first, and then turn on outdoor units.
4About 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 . U. 1. L08 (U. 1. flash)
5Push SW 15 to start the automatic address setting.
(It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)
6The 7-segment display indicates Auto 1 →→
→→
→Auto 2 →→
→→
→Auto 3 .
After the indication, U. 1. - - - (U. 1. flash) starts flashing on the display.
When the flashing stops and U. 1. - - - (U. 1. light) , remains lit on the display, the setting is complete.
7Repeat steps 4 to 6 for other refrigerant lines.
8After completing address setting of all systems, turn off dip switch 2 of SW30 on the interface P.C.
boards of all the header outdoor units connected to the same central control, except the unit that has the
lowest address.
(For unifying the termination of the wiring for the central control of indoor and outdoor units)
9Connect the relay connectors between the [U1, U2] and [U3, U4] terminals of the header outdoor unit of
each refrigerant line.
U1 U2 U3 U4 U5 U6
2
TO
INDOOR
UNIT
TO
CENTRAL
CONTROL
LER
TO
OUTDOOR
UNIT
U1 U2 U3 U4 U5 U6
9
TO
INDOOR
UNIT
TO
CENTRAL
CONTROL
LER
TO
OUTDOOR
UNIT
12

10 Set the central control address.
(For the setting of the central control address, refer to the installation manuals of the central control
devices.)
SW15
SW04
12
SW13 SW14 SW01 SW02 SW03
D600 D601 D602 D603 D604
SW05
7-segment display
Header unit interface P.C. board
SW30
* Header units are connected to the same
central control, except the header unit with
the smallest line address number.
Address Setup (continue)13

Switch setting (setting example when controlling 2 or more refrigerant lines centrally)
Outdoor units (setting manually)
CAUTION
Relay connector connection
Never connect relay connectors between the [U1, U2] and [U3, U4] terminals before completing address setting
of all the refrigerant lines. Otherwise, the addresses cannot be set correctly.
Outdoor unit’s interface
P.C. board Header unit Follower unit Header unit Header unitFollower unit
Factory default
SW13, 14
(Line (system) address)
1
(No setting
required)
(No setting
required)
(No setting
required)
(No setting
required)
231
Dip switch 2 of SW30
(Terminator of indoor/
outdoor communication
line and central control
line)
ON
Set to OFF
after setting
addresses.
Set to OFF
after setting
addresses.
ON
Relay connector Connect after
setting
addresses.
Connect after
setting
addresses.
Connect after
setting
addresses.
Open
Open Open
Line (system) address 11223
Indoor unit address 12121
Group address 00120
A
U1 U2
U3 U4 U3 U4 U3 U4 U3 U4 U3 U4
U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2 U5 U6 U1 U2
U1 U2 U1 U2 U1 U2 U1 U2 U1 U2
U5 U6
BAB ABAB AB
Central
remote
controller
Relay
connector
Relay
connector
Relay
connector
Header unit Header unit Header unit
Follower unit Follower unit
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Individual Group
Indoor units
(automatic setting)
*The items in bold font must be set manually.
14

Group address
Individual: 0000
Header unit: 0001
Follower unit: 0002
(Wiring example for 2 refrigerant lines)
Line 1 Line 2
Line 1 Line 2
Outdoor
Indoor 1 Indoor 2Indoor 1
(Remote controller group control)
Indoor 2 Indoor 3
Indoor 1 Indoor 2Indoor 1 Indoor 2 Indoor 3
Line address
Indoor address
1
1
1
Header
1
2
2
Follower Follower Follower Follower
1
3
2
2
1
2
2
2
2
Outdoor
OutdoorOutdoor
(Wiring during manual address setup)
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Remote
controller
Group
address
In the above example, where remote controllers are not
yet wired, set the address manually after individually
connecting the wired remote controller.
After address setup, return to the original
wiring over remote controllers.
In cases of
remote controller
group control
DN code (CODE No.)
Set data
5, 8, 11,14
6, 9, 12, 15
16
4,
7,
10,
13
3
TEMP. ON / OFF
SET
TIME
TEST
FILTER
RESET
CL
SAVE
SWING/FIX
VENT
UNIT LOUVER
CODE No.
UNIT No.
R.C. No.
TIMER SET MODEFAN
SET DATA
SETTING
Manual Address Setup from the Remote Controller
With indoor wiring work completed and outdoor wiring work not done.in cases where indoor unit addresses are
decided in advance from the wired remote controller, or in cases where addresses are change after address setup.
1Arrange one indoor unit and one remote controller set to
1 by 1.
2Turn on the power.
3Push the
SET
+
CL
+
TEST
buttons simultaneously for 4
seconds or more.
LCD begins blinking.
(Refrigerant line address)
4Using the
TIME
buttons, set the DN code to 12.
5Using the
TIME
buttons, set up the line address
(match it with the line address on the interface PC
board of the header unit on the same refrigerant line).
6Push the
SET
button (OK when the display goes on).
(Indoor address)
7Using the
TEMP.
buttons, set the DN code to 13.
8Using the
TIME
buttons, set up the indoor address.
(0001~0048 )
9Push the
SET
button (OK when the display goes on).
(Group address)
10 Using the
TEMP.
buttons, set the DN code to 14.
11 Using the
TIME
buttons, set Individual = 0000,
Header unit = 0001,Follower unit = 0002.
12 Push the
SET
button (OK when the display goes on).
(Central control address)
13 Using the
TEMP.
buttons, set DN code to 03.
14 Using the
TIME
buttons, set up the central control
address. (0001~0064 )
15 Push
SET
button. (OK when display goes on).
16 Push the
TEST
button.
Setup is finished (“Setting up” blinks; when “Setting up”
goes off, operation is possible).
17 Return to the original wiring over remote controllers.
Address Setup (continue)
15

U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2
U1
U3
U2
U4
U5 U6
U1 U2
A B
Central remote
controller
Header
unit Header
unit
Header
unit
Follower unit Follower unit
Remote
controller
Remote
controller Remote
controller
Remote
controller
Indoor units to have their addresses initialized
Resetting the Address (Resetting to the Factory Default (Address Undecided))
Method 1
Clearing each address separately using a wired remote controller.
Set the system address, indoor unit address and group address to “0099 ” using a wired remote controller.
(For the setting procedure, refer to the address setting procedures using the wired remote controller on the previous pages.)
Method 2
Clearing all the indoor unit addresses on a refrigerant line at once from the outdoor unit.
1Turn off the refrigerant line to reset to the factory default and set the header outdoor unit of the line as below.
1) Disconnect the relay connectors between the [U1, U2] and [U3, U4] terminals.
(Leave them as they are if they have already been disconnected.)
2) Turn on dip switch 2 of SW30 on the interface P.C. board of the header outdoor unit if the switch is OFF.
(Leave it as it is if it has already been set to ON.)
3Confirm that the 7-segment display indicates “A.d. c.L.” and set SW01, SW02 and SW03 to 1, 1, 1
respectively.
4After a time “U.1.L08” appears on the 7-segment display if the address clearing has been completed
successfully. If the 7-segment display indicates “A.d. n.G.”, the outdoor unit may still connected with
other refrigerant lines. Check the connection of the relay connectors between [U1, U2] and [U3, U4].
NOTE
Take care to carry out the procedure above correctly; otherwise, addresses in other refrigerate lines may also be
cleared.
5Set the addresses again after finishing the clearance.
2Turn on the indoor and outdoor units of the refrigerant line for which you want to initialize the addresses.
About one minute after turning on the power, confirm that the 7-segment display on the header outdoor
unit indicates “U.1. - - -” and operate the interface P.C. board on the header outdoor unit of the refrigerant
line as follows.
SW01
2
2
SW02
1
2
SW03
2
2
SW04
Confirm that the 7-segment display indicates “A.d.buS”
and turn SW04 ON for more than 5 seconds.
Confirm that the 7-segment display indicates
“A.d.nEt” and turn SW04 ON for more than 5 seconds.
Clearable addresses
System/indoor unit/group address
Central control address
16

Added Indoor unit
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2 U5 U6
U1 U2
A B
U3 U4
U1 U2
U1
U3
U2
U4
U5 U6
U1 U2
A B
Central remote
controller
Header
unit Header
unit
Header
unit
Follower unit Follower unit
Remote
controller
Remote
controller Remote
controller
Remote
controller
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 PC 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 header units in the refrigerant line to which indoor units have been added, as follows.
1Remove the relay connector between U1/U2 and U3/U4.
2If it is off, turn on SW30-bit 2 on the interface PC board at outdoor header unit side.
∗Turn off the power, and then execute the operation.
“AUTO1” →“AUTO2” →“AUTO3” →... →“AUTO9” ... is counted and displayed on the 7-segment display.
5When “U.1. - - -” is displayed on the 7-segment display, the setup operation finished.
Turn off the indoor/outdoor power.
6Return to the following setup as before.
• Relay connector
•SW30-bit 2
•SW01, SW02, SW03
SW01
2
SW02
14
SW03
2
SW04
After checking that “In.At” is displayed on the 7-segment display, push SW04 for 5 seconds or more.
3Turn on the indoor/outdoor power for the refrigerant line for which an address is to be set up.
After approximately 1 minute, check that “U.1. - - -” is displayed on the 7-segment display.
4Execute the following operation on the interface PC board of the header unit.
Address Setup (continue)17

18
Check after Address Setup when Central Control System Is Connected
When the central control system is connected, check that the following setup has finished after address setup.
NOTE
The figure above does not show all the electric wires.
For details, refer to the installation manuals for the outdoor unit, indoor unit, remote controller, or optional devices.
U1 U2
U1 U2 U1 U2 U1 U2 U1 U2
U5 U6
U3 U4
Header
unit (A)
Header
unit (A)
U1 U2 U5 U6
U3 U4
U1 U2 U5 U6
AB AB AB AB
(5)(4)
(5)
(1) (2)(3)
Other
refrigerant line
U1 U2
U3 U4
U3 U4
U1 U2 U5 U6
To other
refrigerant line
U3 U4
Line address = 2 Line address = 1
%entral remote
controller
Follower
unit (C)
Follower
unit (B)
Outdoor unit
Indoor unit
Remote controller Remote controller Remote controller
Relay
connector
Terminal
resistance
Line address
Main check items
(1) Is the relay connector of the header unit connected after address setup?
(2) Is the relay connector of the follower unit removed?
(3) Is the end resistance (SW30-bit 2) of the header unit with the smallest line address
number in the central control turned on? (Setup is unnecessary for follower units.)
(4) Is the terminal resistance (SW30-bit 2) of the header units, except for the line with the
smallest central control line address, turned off? (Setup is unnecessary for follower units.)
(5) Are addresses in the line address (SW13, SW14) not duplicated in each refrigerant line?
Check

Troubleshooting in Test Operation
If there are phenomena such as the output of a check code or the remote controller is not accepted when
poweredon after wiring work or during address setup operation, the following causes are considered.
A Check Code Is Displayed on the Remote Controller
Cause
When outdoor power is off
Address setup error
• Only line addresses of the connected indoor
units are undefined.
• The outdoor line address and the line addresses
of all the indoor units do not match.
• The indoor addresses are duplicated.
(Units except those displaying E04 are duplicated.)
• A header unit is not set up in group control
(except groups displaying E04).
Duplication of indoor addresses (address number
in the subcode of the check code are duplicated).
There is no outdoor terminal resistance,
or there are two or more resistances.
(After address setup, when terminal
resistance setup is changed after
poweringon)
Transmission circuit error at the interface side
(PC board failure)
After address setup, communication from all the
indoor units is interrupted under the condition that
a normal operation can be performed.
Exceeded the number or capacity of connected
indoor units
Communication between outdoor units has
stopped.
Duplication of outdoor addresses (only when an
outdoor address was manually set up)
Number of connected outdoor units has decreased.
• When installing an outdoor backup
• The power of a follower unit is not turned on.
Duplication of outdoor line addresses
• Line address setup error
(occurred after connection between U1/U2 and
U3/U4 connectors)
Duplication of indoor units with priority
There are two or more indoor units set up with
priority.
Address setup error
• Only indoor addresses of all the connected
indoor units are undefined.o0
Countermeasures
Check that the header outdoor unit power is on
Set up the address again.
Set up the address again.
Check SW30 bit 2 of the header unit.
No connection between multiple refrigerant lines:
SW30 bit 2 is on.
Connection between multiple refrigerant lines:
SW30 bit 2 of the connected header unit is turned
on only for one line.
Replace the interface PC board.
Check and correct disconnection of the indoor/
outdoor communication line (the communication
line between the header unit and the leading
indoor unit).
Check for the influence of communication noise.
Adjust the number or capacity of connected indoor
units.
Check the number of connected outdoor units.
Check that outdoor unit power is on.
Do not use manual setup for outdoor addresses.
Correction of the cause of error occurrence
• If it occurs when installing a backup, clear the
error after setup finishes.
• If the power of a follower unit is not turned on,
turn on the power.
Modify the line address setup of the header unit
between lines.
(Set up SW13 and SW14 on the interface PC
board.)
Set up priority only for one indoor unit.
Among indoor units indicating “L05,” set one unit
with priority.
Set up the addresses again.
Modify the setup.
∗“L05”: Displayed on the indoor unit set up with priority
“L06”: Displayed on the indoor units except the one set up with priority
ON
SW30
12
Check the code
displayed on the
indoor remote
controller
E04
E16
E23
E25
E26
L04
L05 (∗)
L06 (∗)
L08
Header unit
7- segment
display
—
L08
E08 Ù-XX
Alternate
blinking
E07
E06
E16 Ù-XX
Alternate
blinking
E23
E25
E26 Ù-XX
Alternate
blinking
L04
—
L06
L08
19