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Test Run
Display
number
5 0 3 Slave2 outside unit 3 phase power missing
Over-capacity (Indoor unit capacity sum is
5 1
-
excessive) connection
Communication error with master outside unit
5 2 1
inverter controller
Communication error with slave1 outside unit
5 2 2
inverter controller
Communication error with slave2 outside unit
5 2 3
inverter controller
Communication error with master outside unit
5 3
-
controller and indoor unit
Master outside unit 3 phase power reverse
5 4 1
phase
Slave1 outside unit 3 phase power reverse
5 4 2
phase
Slave2 outside unit 3 phase power reverse
5 4 3
phase
5 7 1 Master Outdoor Unit Communication Error with
Inverter Controller
Slave1 Outdoor Unit Communication Error with
5 7 2
Inverter Controller
5 7 3 Slave2 Outdoor Unit Communication Error with
Inverter Controller
Wrong setting between master and slave out-
5 9
-
side unit
Master outside unit inverter PCB EEPROM
6 0 1
error
Slave1 outside unit inverter PCB EEPROM
6 0 2
error
Slave2 outside unit inverter PCB EEPROM
6 0 3
error
6 2 1 Master Outdoor Unit Inverter Heatsink High
Temperature
6 2 2 Slave1 Outdoor Unit Inverter Heatsink High
Temperature
6 2 3 Slave2 Outdoor Unit Inverter Heatsink High
Temperature
Master Outdoor Unit Inverter Heatsink
6 5 1
Temperature Sensor Fault
Slave1 Outdoor Unit Inverter Heatsink
6 5 2
Temperature Sensor Fault
Slave2 Outdoor Unit Inverter Heatsink
6 5 3
Temperature Sensor Fault
Master outside unit static speed CT sensor
7 0 1
error
Slave1 outside unit static speed CT sensor
7 0 2
error
Slave2 outside unit static speed CT sensor
7 0 3
error
7 1 1 Variable Water Flow Control KIT(Accessory)
7 1 2 Variable Water Flow Control KIT(Accessory)
7 1 3 Variable Water Flow Control KIT(Accessory)
Master outside unit inverter PCB input instant
7 3 1
over-current (Peak)
Slave1 outside unit inverter PCB input instant
7 3 2
over-current (Peak)
Slave2 outside unit inverter PCB input instant
7 3 3
over-current (Peak)
74
Outside Unit
Error item
Root cause of error
Slave2 outside unit power line phase missing
Excessive connection of indoor unit connection display value (Different
from outside unit)
When the inverter controller signal is not received from the master out-
side unit inverter controller
When the inverter controller signal is not received from the slave1 out-
side unit inverter controller
When the inverter controller signal is not received from the slave2 out-
side unit inverter controller
When the indoor unit control signal is not received from the master out-
side unit controller
Master outside unit 3 phase power reverse phase connection
Slave1 outside unit 3 phase power reverse phase connection
Slave2 outside unit 3 phase power reverse phase connection
Master Outdoor Unit Controller part cannot receive inverter control sig-
nals (usually happens after onboarding)
Slave1 Outdoor Unit Controller part cannot receive inverter control sig-
nals (usually happens after onboarding)
Slave2 Outdoor Unit Controller part cannot receive inverter control sig-
nals (usually happens after onboarding)
When the dip switch(No.8) setting is different between master and
slave outside unit
Master outside unit inverter PCB EEPROM ACCESS error
Slave1 outside unit inverter PCB EEPROM ACCESS error
Slave2 outside unit inverter PCB EEPROM ACCESS error
System is turned off by Master Outdoor Unit Inverter Heatsink High
Temperature
System is turned off by Slave1 Outdoor Unit Inverter Heatsink High
Temperature
System is turned off by Slave2 Outdoor Unit Inverter Heatsink High
Temperature
Master Outdoor Unit Inverter Heatsink Temperature Sensor open or
short
Slave1 Outdoor Unit Inverter Heatsink Temperature Sensor open or
short
Slave2 Outdoor Unit Inverter Heatsink Temperature Sensor open or
short
Master outside unit static speed CT sensor disconnection or short cir-
cuit
Slave1 outside unit static speed CT sensor disconnection or short cir-
cuit
Slave2 outside unit static speed CT sensor disconnection or short cir-
cuit
Master Outdoor Unit PFC CT Sensor open or short
Slave1 Outdoor Unit PFC CT Sensor open or short
Slave2 Outdoor Unit PFC CT Sensor open or short
Master outside unit inverter PCB input instant over-current (Peak)
exceeded
Slave1 outside unit inverter PCB input instant over-current (Peak)
exceeded
Slave2 outside unit inverter PCB input instant over-current (Peak)
exceeded
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