iMars BD3KTL-PS Energy Storage Inverter Troubleshooting
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Chapter 8 Troubleshooting
This chapter mainly introduces fault alarms and fault codes for users to quickly identity the inverter
fault
Table 7-1 Fault code
Fault code
Fault event
Instruction
01
Ac voltage high1
Grid voltage is higher than protection point 1
02
Ac voltage high2
Grid voltage is higher than protection point 2
03
Ac voltage low1
Grid voltage is lower than protection point 1
04
Ac voltage low2
Grid voltage is lower than protection point 2
05
Ac freq. high1
Grid frequency is higher than protection point 1
06
Ac freq. high2
Grid frequency is higher than protection point 2
07
Ac freq. low1
Grid frequency is lower than protection point 1
08
Ac freq. low2
Grid frequency is lower than protection point 2
09
Ac over curr hw
Output hardware overcurrent
10
Ac over curr sw
Output software overcurrent
11
Bus over volt hw
Hardware bus overvoltage
12
Bus over volt sw
Software bus overvoltage
13
Gfci over
Leakage current exceeded
14
Gfci sensor fault
Leakage current sensor fault
15
Relay fault
Internal relay fault
16
Iso low
The resistance between PV and ground is too low
17
Ac dc over
High DC injection during AC output
18
DSP communication
error
DSP communication fault
19
PV soft fault
PV boost soft start failed
20
Ac zero error
Internal components failed
21
Temperature high1
Overtemp 1
22
LLC soft fault
LLC soft start failed
23
LLC over voltage
LLC overvoltage
24
LLC over current
LLC overcurrent
25
PV1 voltage high
PV1 overvoltage
26
PV1 voltage low
PV1 undervoltage
