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Only for training and service purposes
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Self-diagnosis function
Display
Error item
Root cause of error
Outside unit
2
6
1
Outside unit inverter compressor opera-
tion failure error
Initial operation failure due to outside unit inverter com-
pressor error
2
8
1
Outside unit inverter DC link over-voltage
error
Compressor turned off due to outside unit inverter DC volt-
age over-charge
2
9
1
Outside unit inverter compressor over-cur-
rent
Outside unit inverter compressor error or operating com-
ponent (IPM) error operation
3
1
1
Outside unit inverter CT under-current
error
Compressor turned off due to outside unit inverter CT
under-Current
3
2
1
Outside unit inverter compressor dis-
chrage temperature ove-rise
Compressor turned off due to outside unit inverter comp-
pressor discharge temperature over-rise
Flow rate insufficiency or flow switch trouble of outside unit
3
4
1
Outside unit high pressure over-rise
Compressor turned off due to outside unit high pressure
over-rise
Flow rate insufficiency or flow switch trouble of outside unit
3
5
1
Outside unit low pressure over-drop
Compressor turned off due to outside unit low pressure
over-drop
3
6
1
Low pressure ratio
Pressure ratio is under limit
3
9
1
Communication error between Outside
unit PFC and inverter board
Outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
4
0
1
Outside unit inverter compressor CT sen-
sor error
Outside unit inverter compressor current detection (CT)
sensor disconnection or short circuit
4
1
1
Outside unit inverter compressor dis-
charge temperature sensor error
Outside unit inverter compressor discharge temperature
sensor disconnection or short circuit
4
2
1
Outside unit under-voltage sensor error
Outside unit under-vlotage sensor disconnection or short
circuit
4
3
1
Outside unit over-voltage sensor error
Outside unit over-vlotage sensor disconnection or short
circuit
4
4
1
Outside unit air temperature sensor error
Outside unit air temperature sensor disconnection or short
circuit
4
5
1
Outside Unit Heat Exchanger
Temperature Sensor (A) Fault
Outside Unit Heat Exchanger Temperature Sensor (A)
Open or Short
4
6
1
Outside unit suction temperature sensor
error
Outside unit suction temperature sensor disconnection or
short circuit
5
1
1
Over-capacity
(Indoor unit capacity sum is excessive)
connection
Excessive connection of indoor unit connection display
value (Different from outside unit)
5
2
1
Communication error with outside unit
inverter contrller
When the inverter controller signal is not received from the
outside unit inverter controller
5
3
1
Communication error with outside unit
contrller and indoor unit
When the indoor uint control signal is not received from
the outside unit inverter controller
Summary of Contents for ARWN038GA2
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