Huawei LUNA2000-2.0MWH Series

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Alarm

Name

Severity Possible Cause Suggestion

3040 Incorrect

Bus

Connectio

n on Rack

Controller

Major Cause ID = 1

The output buses are

not connected in

parallel in the 1C

scenario.

If the system is in the array topology

identication process, wait until the

process is complete or exit the

process.

1. Locate the input and output

circuit breakers associated with

[ESC-No].

2. Issue a shutdown command, turn

o the switch on the battery side

and then the switch on the bus

side, and wait for 5 minutes.

3. Check whether the cable

connection to the bus side of the

power control module meets the

1C requirement by referring to

the quick installation guide.

4. After checking that the battery

power cable is correctly

connected, turn on the switch on

the battery side and then the

switch on the bus side, and issue

a startup command.

5. If the alarm persists, contact your

dealer or technical support.

LUNA2000-2.0MWH Series Smart String ESS

User Manual 10 Alarm Reference

Huawei LUNA2000-2.0MWH Series - Page 212