Installation and operation manual
12Power-FAULT
12V power supply fault
PV ISO-PRO 01/02
PV isolation protection
1.Remove all D C input, reconnect and restart inverter one by one.
2.Identify which string cause the fault and check the isolation of
the string.
ILeak-PRO
01/02/03/04
Leakage current
protection
1.Check A C and D C connection
2.Check inverter inside cable connection.
RelayChk-FAIL
Relay check fail
1.Restart inverter or contact installer.
DCinj-FAULT
High DC injection current
AFCI self-detection
(model with AFCI
module)
AFCI module self-detect
fault
1.Restart inverter or connect technician.
Arcing protection
(model with AFCI
module)
Detect arc in DC circuit
1. Check inverter connection whether arc exists and restart
inverter.
Reve-DC
One of the DC string is
reversely connected
1. Please check the inverters’ PV string polarity, if there are strings
reversely connected wait for the night when the solar irradiance is
low and the PV string current down below 0.5A. Turn off the two
DC switches and fix the polarity issue.
Screen OFF with DC
applied
Inverter internally
damaged
1.Do not turn off the DC switches as it will damage the inverter.
2.Please wait for the solar irradiance reduces and confirm the
string current is less than 0.5A with a clip-on ammeter and then
turn off the DC switches.
3.Please note that any damages due to wrong operations are not
covered in the device warranty.
M-S2-OX-EN-V2.4
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