Delta BX6.3 AC Series Operation And Installation Manual page 50

Error message and Trouble Shooting
Code Message
HW COMM2
F22 (Red COMM
Fault)
HW COMM1
F23 (DSP COMM
Fault)
Ground Cur.
(Ground Cur.
F24
High)
RCMU Fail
F27
(RCMU Fault)
RLY Short
F28
(AC RLY Short)
RLY Open
F29
(AC RLY Open)
Bus Unbal.
F30
(Bus Unbalance)
HW Bus OVR
F31
(Bus Voltage
High)
HW Bus OVR
F33
(Bus Voltage
High)
HW Bus OVR
F35
(Bus Voltage
High)
AC Cur. High
F36
(AC Current
High)
AC Cur. High
F37
(AC Current
High)
HW CT
F42
(AC CT Fault)
HW AC OCR
F45
(AC Current
High)
SA OPP
F48
(SA Over Load)
Cause
Internal fault
Internal fault
Residual current over the limit
DC > 150mA
Internal device fault
Internal device fault
Internal device fault
Internal fault
Internal fault
Internal fault
Internal fault
Grid current >135% rated and
keep over 50ms
Grid current >125% rated and
keep over 5s
Internal device fault
AC current over the limit
20 times within 2s
System overload
Fault
Contact your inverter supplier.
Contact your inverter supplier.
Check the insulation of DC wiring.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Contact your inverter supplier.
Check AC and DC wiring for ground faults.
Inverter may be struck by the lighting.
Check the whole wiring of hybrid system.
If this fault occurs often, please contact
your inverter supplier.
In standalone mode, PV and BT power is
insufficient to supply the home load.
Please reduce the load.
50
Action