35
ENGLISH
Self-Diagnosis Function
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as
shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.(* = 1: Master, 2: Slave 1, 3: Slave 2, 4: Slave 3)
Ex)
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Error No. of Compressor
Error No.
Error No. of Unit
Repeat
Display
Title
Cause of Error
Indoor unit related error
0
1
-
Air temperature sensor of indoor unit
Air temperature sensor of indoor unit is open or short
0
2
-
Inlet pipe temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit is open or short
0
3
-
Communication error : wired remote controller
÷
indoor unit
Failing to receive wired remote controller signal in indoor unit PCB
0
4
-
Drain pump
Malfunction of drain pump
0
5
-
Communication error : outdoor unit
÷
indoor unit
Failing to receive outdoor unit signal in indoor unit PCB
0
6
-
Outlet pipe temperature sensor of indoor unit
Outlet pipe temperature sensor of indoor unit is open or short
0
9
-
Indoor EEPROM Error
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
1
0
-
Poor fan motor operation
Disconnecting the fan motor connector / Failure of indoor
fan motor lock
1
7
-
Inlet Air temperature sensor of FAU
Air temperature sensor of indoor unit is open or short
Outdoor unit related error
2
1
*
Master Outdoor Unit Inverter Compressor IPM Fault
Master Outdoor Unit Inverter Compressor Drive IPM Fault
2
2
*
Inverter Board Input Over Current(RMS) of Master
Outdoor Unit
Master Outdoor Unit Inverter Board Input Current excess (RMS)
2
3
*
Master Outdoor Unit Inverter Compressor DC link
Low Voltage
DC charging is not performed at Master Outdoor Unit after start-
ing relay turn on.
2
4
*
Master Outdoor Unit High Pressure Switch
System is turned off by Master Outdoor Unit high pressure switch.
2
5
*
Master Outdoor Unit Input Voltage High/ Low Voltage
Master Outdoor Unit input voltage is over 487V or below 270V
2
6
*
Master Outdoor Unit Inverter Compressor Start
Failure
The First Start Failure by Master Outdoor Unit Inverter Compres-
sor Abnormality
2
9
*
Master Outdoor Unit Inverter Compressor Over
Current
Master Outdoor Unit Inverter Compressor Fault OR Drive Fault
3
2
*
Master Outdoor Unit Inverter Compressor1 High
Discharge Temperature
Master Outdoor Unit Inverter Compressor1 High Discharge Tem-
perature
3
3
*
Master Outdoor Unit Inverter Compressor2 High
Discharge Temperature
Master Outdoor Unit Inverter Compressor2 High Discharge Tem-
perature
3
4
*
High Pressure of Master Outdoor Unit
High Pressure of Master Outdoor Unit
Summary of Contents for ARUB120LTE4
Page 40: ...40 ENGLISH ...
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