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101 21
External output
101 21 11
Wiring of connector
When installing connection cable, specified part (optional parts) must be used.
Output
Error status
Compressor status
Circuit diagram example
Outdoor unit
control PC board
Connector
1
+
CN951
2
1
CN952
2
* Make the distance from the PC board to the connected unit within 10m.
1) Power supply
• Voltage (Chart sign=Vcc) : DC 24V or less
2) Load
• Load : DC 500mA or less is recommended
101 21 21
Error status output (CN921)
An air conditioner error status signal is produced when a malfunction occurs.
Error status
Error
Normal
Output signal
ON
OFF
101 21 21
Compressor status output (CN922)
Compressor operation status signal is produced when the compressor is
running.
Compressor status
Operation
Stop
Output signal
ON
OFF
101 21 41
Base heater
When installing connection cable, specified part (optional parts) must be used.
This output signal is produced when the outdoor temperature drop down to
2°C, and releases at 4°C.
Circuit diagram example
P.C.B
1
2
CN206
3
4
Connector
*1
P.C.B
1
2
AC240V
CN206
3
4
Connector
*1
*1: Connect to pin 1 and pin 3. No connection pin2 and pin4.
*2: The allowable power consumption is 25W or less.
*3: If a load greater than 25W is applied, a contactor or relay should be
used to operate and control the base heater.
En-19
9379069366_IM.indb 19
Connector
CN951
CN952
Connection
Connected unit
cable
(Field supply)
Vcc
Vcc
Power
supply
+
Load
-
*10 m
Signal
connected unit
Base heater
AC240V
*2
connected unit
Base heater
*3
111
LED Display
You can determine the operating status by the lighting up and blinking of the LED lamp.
Check the status using the table below.
111 11
Normal operation mode
CODE
C
L
Cooling
H
t
Heating
o
r During oil recovery operation
d
F During defrosting operation
P
C During power saving operation
L
n During low noise operation
111 21
Error display mode
•
When error occurs, "Err" and "Number of errors occurred" are alternately displayed
on the 7 seg. display.
•
The latest error code can be confirmed by pressing the ENTER button.
•
When error codes are displayed, all the error codes can be confirmed by pressing
the SELECT button.
•
When the error display appears even though the measures for error are taken,
switch on the power again after turning off the power. When the power is turned on
again after turned off, wait approx. 10 minutes and turn on the power again.
Example: When "Discharge thermistor error" and "Compressor thermistor error"
occurred
SELECT
ENTER
CODE
E
1
1
3
Serial communication error
E
1
1
4
E
1
5
6 Check run unfinished
E
2
1
2 Wiring mistake
E
2
2
1 Indoor unit capacity error
E
2
4
2 Connection unit number error (indoor unit)
E
2
4
3 Connection unit number error (branch unit)
E
5
U
1 Indoor unit error
E
6
2
1 Outdoor unit P.C.B. model information error
E
6
3
1 Inverter error
E
6
4
1 Active filter error, P.F.C. circuit error
E
6
5
3 Trip terminal L error
E
6
A
1 Display P.C.B. communication error
E
7
1
1 Discharge temp. sensor error
E
7
2
1 Compressor temp. sensor error
E
7
3
3 Outdoor unit Heat Ex. liquid temp. sensor error
E
7
4
1 Outdoor temp. sensor error
E
7
5
1 Suction gas temp. sensor error
E
7
7
1 Heat sink temp. sensor error
E
8
2
1 Sub-cool Heat Ex. gas inlet temp. sensor error
E
8
2
2 Sub-cool Heat Ex. gas outlet temp. sensor error
E
8
3
1 Liquid pipe temp. sensor error
E
8
4
1 Current sensor error
E
8
6
1 Discharge pressure sensor error
E
8
6
3 Suction pressure sensor error
E
8
6
4 High pressure switch error
E
9
4
1 Trip detection
E
9
5
1 Compressor rotor position detection error
E
9
7
3 Outdoor unit fan motor error
E
9
9
1 4-way valve error
E
A
1
1 Discharge temperature error
E
A
3
1 Compressor temperature error
E
A
5
1 Low pressure error
E
J
2
U Branch boxes error
Note : Even if error is solved while displaying error codes, the 7 seg. display
continues to display the error codes. Please confirm the error has been
recovered by checking normal display.
DESCRIPTION
: Press the "SELECT" button.
: Press the "ENTER" button.
ENTER
SELECT
DESCRIPTION
15/11/2555 11:18:27
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