Technical data

PVI 1800/PVI 2500(Rev A) Installation and Operation Manual
31
DOCR-070570-A
arises on a regular basis
205 Extreme grid over-voltage
The inverter switches over to
normal power/feed mode as soon
as the power grid voltage returns
to its nominal value
Check the grid voltage
The installer/service technician
should be informed if this
problem arises on a regular
basis
206 Grid over-voltage
The inverter switches over to
normal power/feed mode as soon
as the grid voltage returns to its
nominal value
Check the grid voltage
The installer/service technician
should be informed if this
problem arises on a regular
basis
207 Grid under-voltage
The inverter switches over to
normal power/feed mode as soon
as the grid voltage returns to its
nominal value
Check the grid voltage
The installer/service technician
should be informed if this
problem arises on a regular
basis
208 Extreme grid under-voltage
The inverter switches over to
normal power/feed mode as soon
as the grid voltage returns to its
nominal value
Check the grid voltage
The installer/service technician
should be informed if this
problem arises on a regular
b
asis
Ground Fault:
If a significant ground fault occurs in the PV array or wiring, the GFDI fuse (located on the
wiring/connector panel) may be blown. If it is, determine and repair ground fault and replace fuse with
Bussmann GBB-1 250VAC or Little Fuse 3AB 1A 250VAC 314001.
If the GDFI detects a ground fault current larger than 0.8A, error 506 will be displayed. In addition to that
the current value can be read in the display.
Code Desi
g
nation Condition Solution
506 Ground fault current larger than 0.8 A The device switches off Check installation
Weak Sunlight Condition
:
Operation in weak sunlight, (for example early in the morning, when overcast or when snow is covering
most or all of the PV array) can cause the inverter to go through a cycle of trying to start and restart
several times. If you see: “Wait for restart”, “Sync to AC grid” and “Solar voltage too low”, “Solar
power too low” on the LCD display, you have weak array out put power. Look again when the sunlight
is stronger, clouds have cleared or snow has melted or fallen off of the array. It is possible that the length
of time in the morning that this type of condition appears could gradually increase. This might indicate
that there is an excessive build-up of dust or debris on the PV array. If you notice this condition, check
and wash the array for maximum performance.
It is possible that during these low power operating conditions the display shows error
301. This is normal. If this error occurs during startup, this error can also be ignored.