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Advanced Energy
INVERTER FAULT CODES
The inverter display screen provides fault information. In addition, the inverter
firmware utilizes a Modbus variable to indicate a fault condition. Each bit in this fault
variable represents a fault type, the same fault type displayed on the screen. The
Modbus information for the bit assignments and specific fault variables for the fault
categories are as follows:
Table 8‑2. Fault categories
Description
Modbus register number = 42102
Drive fault
Voltage fault
Grid fault
Temperature fault
System fault
Latching fault
For each fault category, another fault variable provides detailed information on which
fault has occurred within this category. The following tables list the possible faults
within each category and related information:
• Hexidecimal value: Value displayed following the category
• Screen display text: Text displayed on the second screen
• Description: Describes the fault
• Action: Necessary steps to resolve the fault
Drive Faults
The following table lists the drive protection faults.
8‑8
Troubleshooting and Solar Energy Technical Support
Screen
Bit Number
Display
Category
DRV
VLT
GRD
TMP
SYS
15
Hex Value
0
1
1
2
2
4
3
8
4
10
8000
Decimal Value
1
2
4
8
16
32768
570-1001791-05A
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