Samsung AVMKH020EA0 Service Manual page 284

8-5-5. The mixing up communication wires between outdoor units
• Mixed up refrigerant pipes and communication wires of
indoor units and outdoor units.
• Installation error when connecting the distributor kit
type indoor unit.
• Mixed up communication wires when installing several
outdoors at the same place.
• An error is not occurred at the simultaneous test
operation of outdoor units, but the above situation is
appeared in S-NET at the operation of an outdoor unit .
• If the operation is going on, P3 and P0 errors are
occurred between outdoor units mixed up
communication wires.
Phenomenon
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Check method
• Be sure to operate only an outdoor unit at the test
operation.
• Displace the mixed communication wires.
• Check the S-NET to see if the same error is occurred after
displacing.
Troubleshooting