21
USER MANUAL
12
ERR_GRID_FREQUENCY
Grid frequency out of range.
Grid frequency is out of range prescribed in standard for given country.
Proposed action:
• Verify grid frequency, if condition insist or this error is noticed on all inverters in installa-
tion,
• Check for locally installed generators, other solar installations or wind turbines, which can
cause frequency slipping
• Check for islanding operation of the inverters
13
ERR_SYSTEM_SW
Firmware CRC error.
Inverter firmware auto test detected firmware CRC error in one of DSP controllers.
Proposed action:
• Replace inverter
14
ERR_COMMUNICATION_
TIMEOUT
No communication between DSP processors.
Main DSP processor can not see any communication from DCDC DSP controller.
Proposed action:
• Wait inverter to reset during the night. If condition persist, replace inverter
15
ERR_GRID_DISCON-
NECTED
No grid
Grid is disconnected or internal PLL can not catch any valid sinusoidal signal
Proposed action:
• No grid connected, very distorted grid current, very low grid voltage.
16
ERR_IGRID_DC_COMPO-
NENT
DC current injected to grid is too high.
Internal circuit detected too high DC current injected to grid.
If condition is rare, than some transients can cause inverter to trigger this error.
Proposed action:
• If condition repeats continuously, then check other sources on the grid that might cause
DC current in it, restart inverter, or if condition persists, replace inverter.
17
ERR_FAST_LOOP_INT
Internal firmware errors, safety shut down.
Proposed action:
• If problem persist, replace inverter
18
ERR_SLOW_LOOP_INT
19
ERR_STATE_MACHINE
TROUBLESHOOTING
