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V6 VRF 50Hz

Part 6 - Diagnosis and Troubleshooting

Procedure 2.2.5

ODU addresses on switch ENC1 are set

incorrectly

Yes

Set the ODU addresses correctly

Communication wires between ODUs are

not connected properly

Yes

Ensure the communication wires are

three-core shielded cable and are

connected properly

Wires between outdoor main PCB and

electric control box communication

terminals block are loose

Yes

Ensure the wires are connected properly

Replacing outdoor main PCB resolves the

error

Replace electric control box

communication terminals block

Notes:

1. The master unit address should be set as 0, slave units addresses should be set from 1 to 3, and the addresses should not be repeated within one system.

2. All the wires for H1, H2, E connections should be three-core shielded cable, the wiring should be connected according to polarity (H1 to H1, etc), the wiring

should not be open or short circuited.