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82 Outside Unit
Test Run
Display
Error item Root cause of error
number
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
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
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 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
When the master outside unit inverter PCB input current is different
When the slave1 outside unit inverter PCB input current is different
When the slave2 outside unit inverter PCB input current is different
Communication error between master outside unit master MICOM and
EEPROM or EEPROM missing
Communication error between slave1 outside unit master MICOM and
EEPROM or EEPROM missing
Communication error between slave2 outside unit master MICOM and
EEPROM or EEPROM missing
When signal from slave outside unit is not received from master out-
side unit master MICOM
When signal from slave outside unit is not received from slave1 out-
side unit master MICOM
When signal from slave outside unit is not received from slave2 out-
side unit master MICOM
Master outside unit liquid pipe temperature sensor disconnection or
short circuit
521
Communication error with master outside unit
inverter controller
522
Communication error with slave1 outside unit
inverter controller
523
Communication error with slave2 outside unit
inverter controller
53-
Communication error with master outside unit
controller and indoor unit
541
Master outside unit 3 phase power reverse
phase
542
Slave1 outside unit 3 phase power reverse
phase
543
Slave2 outside unit 3 phase power reverse
phase
59-
Wrong setting between master and slave out-
side unit
601
Master outside unit inverter PCB EEPROM
error
602
Slave1 outside unit inverter PCB EEPROM
error
603
Slave2 outside unit inverter PCB EEPROM
error
701
Master outside unit static speed CT sensor
error
702
Slave1 outside unit static speed CT sensor
error
703
Slave2 outside unit static speed CT sensor
error
731
Master outside unit inverter PCB input instant
over-current (Peak)
732
Slave1 outside unit inverter PCB input instant
over-current (Peak)
733
Slave2 outside unit inverter PCB input instant
over-current (Peak)
741
Master outside unit inverter PCB phase imbal-
ance
742
Slave1 outside unit inverter PCB phase imbal-
ance
743
Slave2 outside unit inverter PCB phase imbal-
ance
861
Master outside unit master PCB EEPROM
error
862
Slave1 outside unit master PCB EEPROM
error
863
Slave2 outside unit master PCB EEPROM
error
1041
Communication error between master outside
unit and outside unit
1042
Communication error between slave1 outside
unit and outside unit
1043
Communication error between slave2 outside
unit and outside unit
1131
Master outside unit liquid pipe temperature
sensor error
Outside unit
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