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Troubleshooting
SiE12-411
198
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 Super Multi NX C-Series
Page 6: ...SiE12 411 Table of Contents v Index i Drawings Flow Charts v...
Page 7: ...SiE12 411 vi Table of Contents...
Page 67: ...Specifications SiE12 411 56 Specifications...
Page 171: ...Instruction SiE12 411 160 System Configuration...
Page 225: ...Check SiE12 411 214 Service Diagnosis...
Page 295: ...SiE12 411 iv Index...