Delta M100A 283 Operation And Installation Manual page 75

Table 6-2B: Fault Codes (inverter fault) & Messages
Message
DSP COMM Fault The internal communication
(F23) connection is disconnected
Ground Cur.
Insulation problem of PV array
High
to ground
(F24)
1. Power line is disconnected
Iac Unbalance
2. Current feedback circuit is
(F26)
RCMU Fault
RCMU circuit is disconnected
(F27)
AC RLY Short
Grid relay short
(F28)
AC RLY Open
Grid relay open
(F29)
Bus Unbalance
Voltage unbalance of DC link
(F30)
Bus Voltage High
(F31, F32, F33 High bus capacitor voltage
F34, F35)
AC Current High
(F36,F37,F38 Surge occurs during operation
F39,F40,F41)
AC CT Fault
Phase R / S / T CT is defective
(F42,43,44)
AC Current High
AC current over range
(F45)
ZC Circuit Fault The zero crossing circuit
(F50) is defective
Inv Circuit Fault
The inverter circuit is defective
(F51)
Boost Circuit Fault
The boost circuit is defective
(F52)
Arc circuit fail 1. AFCI is not installed
(F58) 2. AFCI self-test is fail
Arc fault The inverter detects arcing
(F59) occurs
Description
defective
Error Message and Trouble Shooting
Check the connection interface RS-485
1. Check the insulation of Solar inputs
2. Contact customer service for
technical support
Check the connection in AC plug
Contact customer service for
technical support
Contact customer service for
technical support
Contact customer service for
technical support
Restart inverter by DC switch
1.Restart inverter by DC switch
2.Check the solar array setting, and make
sure the Voc less than Max. Vdc of Inverter
(if the error code comes along with E30)
Contact customer service for
technical support
Contact customer service for
technical support
Restart the inverter by DC switches
Contact customer service for
technical support
Contact customer service for
technical support
Contact customer service for
technical support
Check the AFCI detection circuit board for
making sure it is connected correctly
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
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