Table 6-2B: Fault Codes (inverter fault) & Messages
Message
Description
Action
Ground Cur.
High
(F24)
Insulation problem of PV array
to ground
1. Check the insulation of Solar inputs
2.
Contact customer service for
technical support
1. Check if there are any cable damaged
at DC side.
2. Replace DC cable and unlock the ARC
fault from DSS
3.
Contact customer service for
technical support
Iac Unbalance
(F26)
1. Power line is disconnected
inside the inverter
2. Current feedback circuit is
defective
Check the connection in AC terminal
RCMU Fault
(F27)
RCMU circuit is disconnected
Contact customer service for
technical support
Contact customer service for
technical support
Grid relay short
Grid relay open
Contact customer service for
technical support
AC RLY Short
(F28)
AC RLY Open
(F29)
Bus Unbalance
(F30)
Voltage unbalance of
DC link
Restart inverter by DC switches
Bus Voltage High
(F31,F33,F35)
Voc of PV array is over
1000Vdc
Restart inverter by DC switches
AC Current High
(F36,F37,F38
F39,F40,F41)
Surge occurs during operation
Contact customer service for
technical support
Contact customer service for
technical support
AC CT Fault
(F42)
Phase R CT is defective
AC CT Fault
(F43)
Phase S CT is defective
AC CT Fault
(F44)
Phase T CT is defective
AC current over range
1. AFCI is not installed
2. AFCI self-test is fail
The inverter detects
Arcing occurs
Restart the inverter by DC switches
Check the AFCI detection circuit board for
making sure it is connected correctly
AC Current High
(F45)
Arc Circuit Fail
(F58)
Arc Detection
(F59)
Contact customer service for
technical support
Contact customer service for
technical support
75
Error Message and Trouble Shooting
Содержание M50A 260
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