ALARM #4
What This Code Means
Error in one of the inverters; Error in the inverters due to installation or internal problem; Overvoltage at the output; System communication failed; Equipment has been turned off; Immediate shutdown occurs; System issues an alarm; Operating mode shuts down; Alarm runs continuously; High inverter temperature warning occurs; Output overload warning occurs; System shuts the operating mode down; Error LEDs are on (red); Battery error persists after restarting; Battery state of charge is low (30%, 25%, or 21%); Operating mode will shut down when battery charge reaches 20%; The equipment has shut down; One of the devices assumed the master state; Firmware incompatibility; Equipment shutdown
Possible Causes
- •Broken maintenance disconnector
- •Inverter stopped working
- •Problem with the electrical installation carried out on the load
- •Problem in the Cerbo GX
- •Problem in one of the inverters
- •One of the phases has been turned off
- •One of the inverters turned off during its operation
- •Erroneous synchronization between the inverters
- •Failure of real-time communications
- •High inverter temperature
- •Output overload
- •BMS of the batteries detects that a battery cell has a voltage lower than acceptable
- •Defective battery
- •Deterioration of battery cells
- •Problem in communication in battery modules
- •Low battery state of charge
- •One of the phases has been disabled
- •The original master failed
- •The firmware of one of the connected devices is not up-to-date enough to work with this device
Suggested Actions
- 1Perform a system shutdown according to the manual (do not turn the batteries off)
- 2Check that the communication between the inverters is correct
- 3Check that the RJ45 connectors are in good condition and tight
- 4Check that the voltage between the DC terminals of the input of each of the inverters is correct
- 5Replace the maintenance disconnector
- 6Turn the batteries off and restart the equipment
- 7Disconnect the load at the power output
- 8Run any operating mode
- 9Verify by means of a voltmeter that the RMS voltage at the output is higher than adequate
- 10Connect the load at the output and verify if there is an overvoltage
- 11Check that the communication between the inverters and between the Cerbo GX and the master inverter is correct
- 12Refer to the on-screen help
- 13See 7.Warning and Alarms
- 14Perform a complete restart of the EHR equipment
- 15Refer to the steps indicated in the on-screen help
- 16See 5. Starting up the EHR plant
- 17Deal with the warning by referring to the on-screen help
- 18Refer to 7.Warning and Alarms
- 19Check that the batteries are working properly
- 20Identify which battery is defective
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