Samsung AR12JSALBWKNCV Service Manual page 64

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Indoor display
LED DISPLAY
Outdoor display
LED DISPLAY
LED ON
Re-energize and check the protection code on display. Firstly display P0.
If this code is displayed when the compressor is started for several seconds or even not started, check
1
the compressor connection for correctness, if no insert wrong, replace outdoor PCB.
Check if the outdoor module is tightly installed onto the radiating fins and if the silicone is applied evenly,
2
fix the screws again if loose.
Check the system pressure, recharge refrigerant if the pressure is low, and discharge some refrigerant
3
if the pressure is too high.
Check the outdoor ventilation and if there is any obstruction that affects the normal radiating of the air
4
conditioner, and installation again.
If the above inspections are normal, but the fault remains unsolved, please replace the outdoor PCB.
5
Re-energize and check the protection code on display. Firstly display P9.
a) Check the U,V, W connection, if is correctness or loose please connect again.
b) If this code is displayed when the compressor is started for several seconds or even not started,
check the compressor connection for correctness, if no insert wrong, replace outdoor PCB.
c) When the compressor is restarted immediately after stop, this might also cause P9 protection
because the cooling system is not stable, try starting the air conditioner again after a longer period of
stop.
Indoor display
LED DISPLAY
Indoor Display of LED
Outdoor display
Outdoor display of LED
LED DISPLAY
LED ON
1
DESCRIPTION
Indoor Display of LED
E9
Compressor frequency drive fault
Outdoor display of LED
Outdoor unit LED Flashes (times)
Heat radiation problem easily happened
while the screw is not fixed tightly.
DESCRIPTION
EU
Voltage sensor fault
Outdoor unit LED Flashes (times)
13
8-1
30
The wiring U,V,W are closed as red,
white and blue respectively.

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