78
Outside Unit
Test Run
Display
Error item
Root cause of error
number
Initial operation failure due to slave2 outside unit inverter compressor
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 inverter compressor error or operating component
(IPM) error operation
Slave1 outside unit inverter compressor error or operating component
(IPM) error operation
Slave2 outside unit inverter compressor error or operating component
(IPM) error operation
Compressor turned off due to master outside unit inverter CT under-
current
Compressor turned off due to slave1 outside unit inverter CT under-
current
Compressor turned off due to slave1 outside unit inverter CT under-
current
Compressor turned off due to master outside unit inverter compressor
discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of master outside unit
Compressor turned off due to slave1 outside unit inverter compressor
discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of slave1 outside unit
Compressor turned off due to slave2 outside unit inverter compressor
discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of slave2 outside unit
Compressor turned off due to master outside unit static speed com-
pressor discharge temperature over-rise
Compressor turned off due to slave1 outside unit static speed com-
pressor discharge temperature over-rise
Compressor turned off due to slave2 outside unit static speed com-
pressor discharge temperature over-rise
Compressor turned off due to master outside unit high pressure over-rise
Flow rate insufficiency or flow switch trouble of master outside unit
Compressor turned off due to slave1 outside unit high pressure over-rise
Flow rate insufficiency or flow switch trouble of slave1 outside unit
Compressor turned off due to slave2 outside unit high pressure over-rise
Flow rate insufficiency or flow switch trouble of slave2 outside unit
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.
Master outside unit inverter compressor current detection (CT) sensor
disconnection or short circuit
Slave1 outside unit inverter compressor current detection (CT) sensor
disconnection or short circuit
Slave2 outside unit inverter compressor current detection (CT) sensor
disconnection or short circuit
Master outside unit inverter compressor discharge temperature sensor
disconnection or short circuit
2
6
3
Slave2 outside unit inverter compressor opera-
tion failure 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 inverter compressor over-
current
2
9
2
Slave1 outside unit inverter compressor over-
current
2
9
3
Slave2 outside unit inverter compressor over-
current
3
1
1
Master outside unit inverter CT under-current
error
3
1
2
Slave1 outside unit inverter CT under-current
error
3
1
3
Slave1 outside unit inverter CT under-current
error
3
2
1
Master outside unit inverter compressor dis-
charge temperature over-rise
3
2
2
Slave1 outside unit inverter compressor dis-
charge temperature over-rise
3
2
3
Slave2 outside unit inverter compressor dis-
charge temperature over-rise
3
3
1
Master outside unit static speed compressor
discharge temperature over-rise
3
3
2
Slave1 outside unit static speed compressor
discharge temperature over-rise
3
3
3
Slave2 outside unit static 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.
4
0
1
Master outside unit inverter compressor CT
sensor error
4
0
2
Slave1 outside unit inverter compressor CT
sensor error
4
0
3
Slave2 outside unit inverter compressor CT
sensor error
4
1
1
Master outside unit inverter compressor dis-
charge temperature sensor error
Outside unit
