Samsung RSG257AARS/XAA - 4-2-19) LED Blinking Frequency Depending on Protecting Functions; Troubleshooting

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If Failure Condition is detected during compressor is operating, immediately stop Compressor operating and stand
by 5 minutes. During this 5 minutes, RPM command signal is not available. It means, even if available RPM
command signal is applied to the compressor, it does not work and keep standing by.
Blinking time is 1 second and dwell time is 2 seconds.
LED blinking frequency depending on protecting functions
If the same blinking, After 5 minutes, Follow the Remarks
TROUBLESHOOTING
4-2-19) LED blinking frequency depending on protecting functions
LED Blinking Frequency Protecting Functions
Normal Operation
Starting Failure
SPM Fault
Abnormal Current
Detection
Motor Locked/Over RPM
Under Voltage
Over Voltage
Remarks
N/A
1. Short between COMP U, V, and W phase(CN04)
2. Short among IPM Pins(No. #1~26)
3. Drop the IPM operating Voltage under DC 13.5V
4. Other cases, check the COMP, cycle, etc.
1. Open the COMP wire(CN04)
2. Bad condition of R1(ex. Bad soldering.)
3. Other cases, check the COMP, cycle, etc.
1. Operating the locked rotor COMP within 5 second.
2. Operating the COMP under 1000 RPM more than 5
second.
3. Short the shunt resistor(R1) between leads.
4. Occur the huge change of input voltage in a momeent
5. Other cases, check the COMP, cycle, etc.
1. Drop the input voltage under AC 106V
2. Short resistor R312(DC link resistor)
1. Increase the input voltage over AC 310V
2. Short resistor among R309, R310 and R311(DC link
resistor)
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