Samsung RF18A Series Service Manual page 72

CHECK THE INSTALLATION STATUS
* Self-diagnosis CHECK LIST
LED
F R
constraint error
Comp IPM Shut Down
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Item Diagnostic method
Check the Compressor connections .
Check the voltage of Resistance of R2
[0.09Ohm]
Comp location
Check the soldering status of the MAIN
detection error
PCB. (Check if any parts have short-
circuited)
Check the Compressor and the Cycle.
Compressor locking Error.
Comp motor
Check the Compressor and the Cycle.
Check the compressor wire connections.
Check the input voltage.
- AC 60V (Input Power AC110~127V)
Comp low
voltage error
- AC 106V (Input Power AC 220~240V)
Check PCB bottom side soldering state.
Check the input voltage.
- AC 155V (Input Power AC110~127V)
Comp over
voltage error
- AC 310V (Input Power AC 220~240V)
Check PCB bottom side soldering state.
Check the soldering status of the
inverter PCB. (Check if any parts have
short-circuited).
Check IPM, PBA case, Compressor
Error
Temperature.
If IPM or Discrete IC Temperature 120℃
over, blinking LED.
72
Location image