Samsung AS07A5MA Service Manual page 19

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Troubleshooting (cont'd)
3-2 US12AA(B)MCF
1) Checklist :
(1) Is LED 01(GRN) on?
(2) Are all connectors linked correctly?
2) Troubleshooting procedure
Check the power supply between "L1" and "L2" of the
Is AC voltage between "L1" and "1" (CN76)?
18
outdoor terminal block
Is voltage rating between "L1" and "1" ?
YES
Is LED 01 of the indoor PCB on?
YES
Is the compressor on?
YES
Is the Outdoor fan on?
YES
Normal
NO
Check the indoor PCB again
NO
Check the connection wire and No Power
Refer to page 14
NO
Check the compressor lead wire again
NO
Check the indoor PCB and connection wire again