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Troubleshooting
Si12-411A
200
Service Diagnosis
5.22
Output Over Current Detection
Remote
Controller
Display
L5
Outdoor Unit LED
Display
A
5
1
1
2
1
3
4
4
1
Method of
Malfunction
Detection
An output over-current is detected by checking the current that flows in the inverter DC section.
Malfunction
Decision
Conditions
A position signal error occurs while the compressor is running.
A speed error occurs while the compressor is running.
An output over-current input is fed from the output over-current detection circuit to the
microcomputer.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Supposed
Causes
Over-current due to defective power transistor
Over-current due to wrong internal wiring
Over-current due to abnormal supply voltage
Over-current due to defective PCB
Error detection due to defective PCB
Over-current due to closed stop valve
Over-current due to compressor failure
Over-current due to poor installation condition
Summary of Contents for 2MKD58BVM
Page 1: ...C Series Applied Models zInverter Multi Cooling Only zInverter Multi Heat Pump Si12 411A ...
Page 6: ...Si12 411A Table of Contents v Index i Drawings Flow Charts v ...
Page 7: ...Si12 411A vi Table of Contents ...
Page 67: ...Specifications Si12 411A 56 Specifications ...
Page 173: ...Instruction Si12 411A 162 System Configuration ...
Page 227: ...Check Si12 411A 216 Service Diagnosis ...
Page 295: ...Si12 411A iv Index ...
Page 298: ...Si12 411A Printed in Singapore 03 2005 AK COS ...