Delta M15A-220 Operation And Installation Manual page 57

Table 6-2B: Fault Codes (inverter fault) & Messages
Message
Red COMM
The internal communication
Fault
connection is disconnected
(F22)
DSP COMM
The internal communication
Fault
connection is disconnected
(F23)
Ground Cur.
Insulation problem of PV array
High
to ground
(F24)
1. Power line is disconnected
Iac Unbalance
(F26) 2. Current feedback circuit is
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
(F30) DC link
Bus Voltage High
High bus capacitor voltage
(F31,F33,F35)
AC Current High
(F36,F37,F38 Surge occurs during operation
F39,F40,F41)
AC CT Fault
AC CT is defective
(F42)
AC Current High
AC current over range
(F45)
Description
inside the inverter
defective
Error Message and Trouble Shooting
Contact customer service for
technical support
Contact customer service for
technical support
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 switch
57
Action