En-21
Connected unit Connected unit
Connected unit Connected unit Connected unit
CN131
(Yellow)
CN133
(White)
CN132
(Green)
CN134
(Red)
CN135
(Orange)
P. C .B
Input 1
Input 3Input 2
Input 4
Input 5
Operation behavior
Each input terminal works as follows.
Connector
Input
signal
Status
Outdoor unit
Primary
Subordi-
nate
Input 1
CN131 (Yellow)
OFF Normal operation
O
ON Low noise mode operation
Input 2
CN132 (Green) (*1)
OFF Cooling priority
O
ON Heating priority
Input 3
CN133 (White)
OFF Normal operation
O
ON
Outdoor unit operation peak
control
Input 4
CN134 (Red)
OFF Normal operation
O
ON
Batch stop or Emergency stop
operation (*2)(*3)
Input 5
CN135 (Orange)
(*4)
No pulse
No information from electric-
ity meter
OO
Pulse
Power usage information from
electricity meter
Subordinate unit can connect only input 5 (CN135).
The operations of each input terminal and the selection of function are set with the push
button on the main PC board of outdoor unit. About the setting, please refer to “8.4. Push
button setting”.
NOTES:
*1: The “external input priority mode” must be set by pressing push button on main PC
board of outdoor unit. (Refer to “8. FIELD SETTING”.)
*2: Batch stop or emergency stop pattern can be selected by push button on main PC
board of outdoor unit. (Refer to “8. FIELD SETTING”.)
*3: The emergency stop function mounted in this model does not guarantee the regula-
tions of each country. For this reason, sufficient checking is necessary regarding
use.
Especially, since the fact that the equipment may not be emergency-stopped in the
case of breaking of the wiring to the external input terminals and communication
line, communication error due to noise, VRF external input circuit trouble, etc. must
be considered, the provision of double measures that add direct interruption of the
power supply by switch, etc. is recommended as a precaution.
*4: Pulse input to CN135 must be width 50 ms or more, and must be interval 50 ms or
more.
7.7.4 External output terminal (primary unit only)
• You can detect the operation condition of outdoor unit and the unusual situation of both
indoor and outdoor unit.
• The external output terminal is only valid for primary unit.
Wiring method and specifications
Error status
This output indicates the outdoor unit
and connected indoor unit's “Normal” or
“Error” status.
Operation status
This output indicates the outdoor unit's
“Operation” status.
Connector
Output
voltage
Status
Output 1
CN136
(Black)
0 V Normal
DC 12-24 V
(*1)
Error
Output 2
CN137
(Blue)
0 V Stop
DC 12-24 V
(*1)
Operation
P.C.B.
CN136 (Black) or
CN137 (Blue)
DC power supply
(External) 12-24 V
Connected load (Operation Indica-
tor or Error Indicator)
Connected unit
*1: Provide a DC 12 to 24 V power supply.
Select a power supply capacity with an ample surplus for the connected load.
*2: The allowable current is 30 mA or less.
Provide a load resistance such that the current becomes 30 mA or less.
*3: Polarity is [+] for pin 1 and [-] for pin 2. Connect correctly.
Do not impress a voltage exceeding 24 V across pins 1-2.
* A twisted pair cable (22AWG (0.33 mm²)) should be used.
Maximum length of cable is 492 ft (150 m).
* Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
8. FIELD SETTING
CAUTION
Discharge the static electricity from your body before setting up the switches.
Never touch the terminals or the patterns on the parts that are mounted on the main PC
board.
8.1. Field setting switches
Remove the service panel of the outdoor unit and the cover of the electrical component
box to access the main PC board of the outdoor unit.
Switches for various settings and LED displays are shown in the figure.
MODE
/EXIT
SELECT
SET1
POWER ERROR
ENTER
×10 ×1
REF AD
SET2 SET3 SET4
SET5
SW107 SW108 SW109
D306
D301
D300
LED101 LED102
LED105
LED104
D305
D304 D303
SW101
SW106
SW111
SW105
SW102 SW103 SW104
7 Segment LED indicator
Push button
LED lamp
Rotary switch
Main PC board
DIP switch
DIP switch
8.2. DIP switch setting
8.2.1 List of Settings
SET2, SET3, and SET5 must be set
for the DIP switch.
Configure the settings before turning
on the power. Settings for SET1,
and SET4 DIP switches are factory
default ones. Do not change them.
*1: Pressure sensor kit (indoor unit
optional parts)
DIP Switch Function
SET1 1-4 Prohibited
SET2
1-2 System type setting
3 Prohibited
4
When use the UTY-SPWX (*1),
turn this switch on.
SET3
1
Outdoor unit address setting
2
3
Setting for number of subordi-
nate units
4
SET4 1-4 Prohibited
SET5
1
Terminal resistor setting (H1,
H2)
2-3 Prohibited
4
Terminal resistor setting (X1,
X2, Z1, Z2)
9378945722-05_IM_L3.indb 219378945722-05_IM_L3.indb 21 2023/3/24 9:23:502023/3/24 9:23:50
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