Samsung AR12FSFPESNNEU, Service Manual

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Is the power cord connected normal?
Is the cable connected correctly
between indoor and outdoor unit?
Is the wiring correctly from outdoor
terminal block to PBA
YES
Reconnect the power cord correctly.
NO
YES
Is the voltage of outdoor unit
terminal block correctly? N(1)-1 :
230Vac
Check the cable connec on from indoor unit to
outdoor unit
The remote control signal receiver on the display
PBA is wrong . Check the display board
NO
YES
Is the SMPS DC _link voltage
normal?
CE151 :270Vdc~320Vdc
Exchange the outdoor PBA
NO
Is the SMPS is normal?
Check the voltage.
CE153:3.3Vdc, CE155:12Vdc,
CE157:15Vdc
Exchange the outdoor PBA
YES
NO
YES
Exchange the outdoor PBA
Check the fuse open or not
(F001)
Exchange the outdoor PBA
NO
Is the voltage of indoor unit
terminal block correctly? N(1)-1 :
230Vac
Restart a er power o ff .
Set the opera on
Check the wiring from indoor terminal block to
indoor PBA
Exchange the indoor PBA
Unplug the power cord
NO
Is the input voltage of outdoor
PBA correctly? CN001-CN002:
230Vac
Check the wiring from outdoor terminal block to
outdoor PBA
NO