1-90
TROUBLESHOOTING
Upper Limit
Lower Limit
Invent Primary Current (A)
35
30
25
20
15
10
5
30252015105
Running Current of Compressor MC1
Indicated on 7- segment
(2) Running Current of Compressor
Inverter Primary Current
The inverter primary current is estimated from the running current of the compressor MC1 indicated
on 7-segments, as chart below.
Remark
Cause of Stoppage for
Corresponding Unit
Automatic Stoppage of Transistor Module
(IPM Error)
(Over Current, Decrease Voltage,
Increase Temperature)
Instantaneous Over Current
Electronic Thermal Activation
Inverter Voltage Decrease
Increase Voltage
Abnormal Current Sensor
Instantaneous Power Failure Detection
Reset of Micro-Computer for Inverter
Code Cause
Alarm Code
Indication
during Retry
Abnormal Inverter Fin Thermistor
Earth Fault Detection for Compressor
(Only Starting)
Abnormal Power Source Phase
Indicated Running Current of Compressor MC2, MC3, MC4
The running current of the compressor MC2, MC3, MC4 is detected by current sensor. (CT2 to CT4)
Cause of Stoppage for Inverter (Content of Check Item " ")
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