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ENGLISH
Installation Manual 69
Test Run
Display
Error item Root cause of error
number
Outside unit
Initial operation failure due to master outside unit Variable speed com-
pressor error
Initial operation failure due to slave1 outside unit Variable speed com-
pressor error
Initial operation failure due to slave2 outside unit Variable speed com-
pressor error
Master PSC/PFC Communication error
Slave1 PSC/PFC Communication error
Slave2 PSC/PFC Communication error
Compressor turned Off due to master outside unit inverter DC voltage
over-charge
Compressor turned Off due to slave1 outside unit inverter DC voltage
over-charge
Compressor turned Off due to slave2 outside unit inverter DC voltage
over-charge
Master outside unit Variable speed compressor error or operating com-
ponent (IPM) error operation
Slave1 outside unit Variable speed compressor error or operating com-
ponent (IPM) error operation
Slave2 outside unit Variable speed compressor error or operating com-
ponent (IPM) error operation
Compressor turned off due to master outside unit inverter CT under-
current
Compressor turned off due to slave outside unit inverter CT under-cur-
rent
Compressor turned off due to slave1 outside unit inverter CT under-
current
Compressor turned off due to master outside unit Variable speed com-
pressor discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of master outside unit
Compressor turned off due to slave1 outside unit Variable speed com-
pressor discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of slave1 outside unit
Compressor turned off due to slave2 outside unit Variable speed com-
pressor discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of slave2 outside unit
Compressor turned off due to master outside unit Fixed speed com-
pressor discharge temperature over-rise
Compressor turned off due to slave1 outside unit Fixed speed com-
pressor discharge temperature over-rise
Compressor turned off due to slave2 outside unit Fixed speed com-
pressor discharge temperature over-rise
Compressor turned off due to master outside unit high pressure over-rise
Compressor turned off due to slave1 outside unit high pressure over-rise
Compressor turned off due to slave2 outside unit high pressure over-rise
Compressor turned off due to master outside unit low pressure over-drop.
Compressor turned off due to slave1 outside unit low pressure over-drop.
Compressor turned off due to slave2 outside unit low pressure over-drop.
Failing to transmission between inverter Micom and converter Micom
of master outside unit
Failing to transmission between inverter Micom and converter Micom
of slave1 outside unit
Failing to transmission between inverter Micom and converter Micom
of slave2 outside unit
Master outside unit Variable speed compressor current detection (CT)
sensor disconnection or short circuit
2 6 1
Master outside unit Variable speed compressor
operation failure error
2 6 2
Slave1 outside unit Variable speed compressor
operation failure error
2 6 3
Slave2 outside unit Variable speed compressor
operation failure error
2 7 1 Master PSC/PFC Fault error
2 7 2 Slave1 PSC/PFC Fault error
2 7 3 Slave2 PSC/PFC Fault error
2 8 1
Master outside unit inverter DC link over-volt-
age error
2 8 2
Slave1 outside unit inverter DC link over-volt-
age error
2 8 3
Slave2 outside unit inverter DC link over-volt-
age error
2 9 1
Master outside unit Variable speed compressor
over-current
2 9 2
Slave1 outside unit Variable speed compressor
over-current
2 9 3
Slave2 outside unit Variable speed compressor
over-current
3 1 1
Master outside unit inverter CT under-current
error
3 1 2
Slave outside unit inverter CT under-current
error
3 1 3
Slave1 outside unit inverter CT under-current
error
3 2 1
Master outside unit Variable speed compressor
discharge temperature over-rise
3 2 2
Slave1 outside unit Variable speed compressor
discharge temperature over-rise
3 2 3
Slave2 outside unit Variable speed compressor
discharge temperature over-rise
3 3 1
Master outside unit Fixed speed compressor
discharge temperature over-rise
3 3 2
Slave1 outside unit Fixed speed compressor
discharge temperature over-rise
3 3 3
Slave2 outside unit Fixed speed compressor
discharge temperature over-rise
3 4 1 Master outside unit high pressure over-rise
3 4 2 Slave1 outside unit high pressure over-rise
3 4 3 Slave2 outside unit high pressure over-rise
3 5 1 Master outside unit low pressure over-drop.
3 5 2 Slave1 outside unit low pressure over-drop.
3 5 3 Slave2 outside unit low pressure over-drop.
3 9 1
PFC Transmission error of master outside unit:
Inv.Micom ÷ Convertor Micom
3 9 2
PFC Transmission error of slave1 outside unit:
Inv.Micom ÷ Convertor Micom
3 9 3
PFC Transmission error of slave2 outside unit:
Inv.Micom ÷ Convertor Micom
4 0 1
Master outside unit Variable speed compressor
CT sensor error
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