En-26
External output terminal
6. 6. 3.
Service parts : EXTERNAL INPUT WIRE A (9368777005)
You can detect the operation condition of outdoor unit and the abnormal situation of both indoor and outdoor unit.
•
The external output terminal is only valid for Master Unit.
•
Wiring method and speci
fi
cations
Error display (Master unit only)
This output indicates the outdoor unit and connected indoor unit's "Normal" or "Error" status.
Operation display (Master unit only)
This output indicates the outdoor unit's "Operation" status.
Connector
Output voltage
Status
CN136 (Black)
0V
Normal
DC 12-24 V *5
Error
CN137 (Blue)
0V
Stop
DC 12-24 V *5
Operation
1
2
+
+
-
*5
*6
*7
P.C.B
CN136
(Black)
or CN137
(Blue)
DC power supply
(External) 12 - 24V
Connected load
(Operation In-
dicator or Error
Indicator)
Connected unit
*5: Provide a DC12 to 24V power supply.
Select a power supply capacity with an ample
surplus for the connected load.
*6: The allowable current is 30mA or less.
Provide a load resistance such that the current
becomes 30mA or less.
*7: Polarity is [+] for pin 1 and [-] for pin 2. Connect
correctly.
Do not impress a voltage exceeding 24V across pins
1-2.
A twisted pair cable (0.33mm
*
2
(AWG22)) should be used. Maximum length of cable is 150m.
Use an external input and output cable with appropriate external dimension, depending on the number of cables to
*
be installed.
Base heater terminal
6. 6. 4.
Service parts : WIRE WITH CONNECTOR (9708642000)
This is the output signal for base heater. Output signal ON, when the outdoor temperature goes down below 2°C, and
signal OFF at the outdoor temperature 4°C.
1
2
3
4
8: Connect to pin 1 and pin 3. No connection pin2 and pin4.
*
9: The allowable current is 1A or less.
*
P.C.B
CN115
(Black)
*8
AC240V
(For rated 415V power supply)
Cable
(0.82mm
2
(18AWG))
Base heater
*9
9378945029-03_IM_EN.indb 26
9378945029-03_IM_EN.indb 26
2011-9-20 16:25:59
2011-9-20 16:25:59
