ALARM #39

Possible Causes

• •BMS of the batteries is defective
• •Incorrect communication between battery BMS and Cerbo GX
• •Loose or damaged RJ45 connectors
• •Battery is defective
• •One or more cells of the batteries are defective
• •BMS detects battery cell voltage is lower than acceptable
• •BMS detects battery cell voltage is higher than acceptable
• •One of the phases has been disabled
• •Very high ambient temperature (above 30°C)
• •Very high inverter power (approaching inverter limits)

Suggested Actions

1. 1Check to see if the error LEDs are on (red) and identify the defective elements
2. 2Check that the communication between the BMS of the batteries and the Cerbo GX is correct
3. 3Check that the RJ45 connectors connected between the battery modules are in good condition and tight
4. 4Check the voltage between the DC bus from the EHR
5. 5Turn the batteries off and restart the equipment
6. 6Replace defective modules
7. 7Refer to the manual to perform a system shutdown (do not turn the batteries off)
8. 8Check that the batteries are working properly and see if the error LEDs are on (red) to identify defective elements
9. 9Check that the RJ45 connectors connected between the battery modules are in good condition and tightly tightened
10. 10Charge the batteries by applying an operating mode or by performing a maintenance charge
11. 11Charge the battery with a fast charge
12. 12Perform a maintenance charge to balance the internal cells of the batteries
13. 13Deal with the warning when it appears in order to prevent the temperature alarm from occurring as per the help functions shown on the screen

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