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ENGLISH
Display Title Cause of Error
Outdoor unit related error
3 5 * Low Pressure of Master Outdoor Unit Low Pressure of Master Outdoor Unit
3 6 *
Master Outdoor Unit Low Compression Ratio Lim-
ited
Master Outdoor Unit Low Compression Ratio Limited
4 0 *
Master Outdoor Unit Inverter Compressor CT Sen-
sor Fault
Master Outdoor Unit Inverter Compressor CT Sensor open or
short
4 1 *
Master Outdoor Unit Inverter Compressor1 Dis-
charge Temperature Sensor Fault
Master Outdoor Unit Inverter Compressor Discharge Tempera-
ture Sensor open or short
4 2 * Master Outdoor Unit Low Pressure Sensor Fault Master Outdoor Unit Low Pressure Sensor open or short
4 3 * Master Outdoor Unit High Pressure Sensor Fault Master Outdoor Unit High Pressure Sensor open or short
4 4 * Master Outdoor Unit Air Temperature Sensor Fault Master Outdoor Unit Air Temperature Sensor open or short
4 5 *
Master Outdoor Unit Heat Exchanger Temperature
Sensor (Front side) Fault
Master Outdoor Unit Heat Exchanger Temperature Sensor(Front
side) open or short
4 6 *
Master Outdoor Unit Suction Temperature Sensor
Fault
Master Outdoor Unit Suction Temperature Sensor open or short
4 7 *
Master Outdoor Unit Inverter Compressor2 Dis-
charge Temperature Sensor Fault
Master Outdoor Unit Inverter Compressor2 Discharge Tempera-
ture Sensor open or short
4 9 *
Master Outdoor Unit Faulty IPM Temperature Sen-
sor
Master Outdoor Unit IPM Temperature Sensor short/open
5 0 *
Omitting connection of R, S, T power of Master
Outdoor Unit
Omitting connection of Master outdoor unit
5 1 * Excessive capacity of indoor units
Excessive connection of indoor units compared to capacity of Out-
door Unit
5 2 *
Communication error : inverter PCB → Main PCB
Failing to receive inverter signal at main PCB of Master Outdoor
Unit
5 3 *
Communication error : indoor unit → Main PCB of
Outdoor Unit
Failing to receive indoor unit signal at main PCB of Outdoor Unit .
5 7 *
Communication error : Main PCB → inverter PCB
Failing to receive signal main PCB at inverter PCB of Master Out-
door Unit
5 9 * Mixing Installation of Sub Outdoor Unit
Mixing Installation of Old Sub Outdoor Unit and New Slave Outdoor Unit
6 0 * Inverter PCB EEPROM Error of Master Outdoor Unit Access Error of Inverter PCB of Master Outdoor Unit
6 2 *
Master Outdoor Unit Inverter Heatsink High Tem-
perature
System is turned off by Master Outdoor Unit Inverter Heatsink High
Temperature
6 5 *
Master Outdoor Unit Inverter Heatsink Tempera-
ture Sensor Fault
Master Outdoor Unit Inverter Heatsink Temperature Sensor open
or short
6 7 * Master Outdoor Unit Fan Lock Restriction of Master Outdoor Unit
7 1 * Converter CT Sensor Error of Master Outdoor Unit Converter CT Sensor open or short of Master Outdoor Unit
7 5 * Master Outdoor Unit Fan CT Sensor Error Master Outdoor Unit Fan CT Sensor open or short
76*
Master Outdoor Unit Fan DC Link High Voltage
Error
Master Outdoor Unit Fan DC Link High Voltage Error
7 7 * Master Outdoor Unit Fan Over Current Error Master Outdoor Unit Fan Current is over 5A
7 9 * Master Outdoor Unit Fan Start Failure Error Master Outdoor Unit Fan First Position Sensing Failure
8 6 * Master Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Master Outdoor Unit Main MICOM
and EEPROM or omitting EEPROM
8 7 * Master Outdoor Unit Fan PCB EEPROM Error
Communication Fail Between Master Outdoor Unit Fan MICOM
and EEPROM or omitting EEPROM
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