En-21
10. LED Status
You can determine the operating status by the lighting up and blinking of the LED dis-
play.
Check the status using the table below.
10. 1. Normal operation mode
Mode
CODE
DESCRIPTION
Operation
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
10. 2. Error codes
Mode
CODE
DESCRIPTION
Communication
error
E
1
4.
2
Outdoor unit network communication 2 error
E
1
4.
5
The number of indoor unit shortage
Function setting
error
E
2
2.
1
Indoor unit capacity error
E
2
4.
2
Connection unit number error (Indoor unit)
E
2
6.
1
Indoor unit duplicate address error
E
2
8.
1
Auto address setting error
E
2
8.
4
Signal ampli
fi
er auto address error
Indoor unit
actuator error
E
5
U.
1
Indoor unit miscellaneous error
Outdoor unit
PCB/Electrical
component/
Switch error
E
6
2.
3
Outdoor unit EEPROM access error
E
6
2.
6
Outdoor unit inverters communication error
E
6
2.
8
Outdoor unit EEPROM data corruption error
E
6
3.
1
Outdoor unit inverter error
E
6
7.
2
Outdoor unit inverter PCB power short interrup-
tion error
E
6
8.
2
Outdoor unit rush current limiting resister temp.
rise error (protective operation)
E
6
9.
1
Outdoor unit transmission PCB parallel com-
munication error
Outdoor unit
sensor error
E
7
1.
1
Outdoor unit discharge temp. thermistor 1 error
E
7
2.
1
Outdoor unit compressor temp. thermistor 1 error
E
7
3.
3
Outdoor unit heat ex. liquid temp. thermistor error
E
7
4.
1
Outside air temp. thermistor error
E
7
5.
1
Outdoor unit suction gas temp. thermistor error
E
7
7.
1
Outdoor unit heat sink temp. thermistor error
E
8
4.
1
Outdoor unit current sensor 1 error
(permanent stop)
E
8
6.
1
Outdoor unit discharge pressure sensor error
E
8
6.
3
Outdoor unit suction pressure sensor error
Outdoor unit
actuator error
E
9
3.
1
Outdoor unit inverter compressor start up error
E
9
4.
1
Outdoor unit trip detection
E
9
5.
5
Outdoor unit compressor motor loss of synchro-
nization
E
9
7.
1
Outdoor unit fan motor 1 lock error
E
9
7.
4
Outdoor unit fan motor 1 undervoltage error
E
9
7.
5
Outdoor unit fan motor 1 temperature error
(protective action)
E
9
A.
1
Outdoor unit coil 1 (expansion valve 1) error
Refrigerant
system error
E
A
1.
1
Outdoor unit discharge temperature 1 error
(permanent stop)
E
A
3.
1
Outdoor unit compressor 1 temperature error
E
A
4.
1
Outdoor unit high pressure error
E
A
5.
1
Outdoor unit low pressure error
E
A
C.
4
Outdoor unit heat sink temperature error
㪣
㪣㪜㪛㩷㫃㪸㫄㫇㩷㪑
㪃
㪃
㪃
㪃
㪃
㪃
㪃
㪃
㪣㪑
㪟㪑
㪡㪑
㪃
㪍㪑
㪃
㪃
㪃
㫅㪑
㫆㪑
㫉㪑
㫋㪑
㪃
㪃
㪃
㪃
㪬㪑
㪃
㪐㪑
㪏㪑
㪃
㪃
㪃
㪃
㪧㪑
㪻㪑
㪪㪑
㪘㪑
㪝㪑
㪚㪑
㪜㪑
㪇㪑
㪌㪑
㪃
㪃
㪃
㪃
㪃
㪊㪑
㪈㪑
㪉㪑
㪃
㪎㪑
㪋㪑
9. 4. Checklist
Check description
Check method
Criteria
1
High and low pressure values
are normal.
Check it with a pres-
sure gauge.
Cooling: low pressure
approx. 0.8 MPa
Heating: high pressure
approx. 3.0 MPa
2
Drain water is discharged
smoothly through the drain
hose.
Check it by pouring
water.
―
3
Indoor and outdoor unit fans
are operating.
Check them visually.
―
4
Compressor operates after
the indoor unit operates.
Check the operating
sound.
―
5
Difference between inlet and
outlet temperatures is normal.
Measure the inlet and
outlet temperatures.
Temperature difference
10 degrees
6
Error is not displayed
Check the 7 segment
display
Error blinking or no error
code display
9380545057_IM.indb 21
9380545057_IM.indb 21
2014/9/15 11:27:07
2014/9/15 11:27:07
