Sunway NT 2600 - Manual (Page 50)

Display for AFI error protection:
· Overheating fault
Your solar inverter is designed for an
ambient temperature of up to +40°C.
When the maximum upper temperature
threshold is reached, the feed-in is stop-
ped. When the heat sink temperature
has decreased, the solar inverter starts
up again automatically.
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· DC overvoltage
A maximum no-load voltage of 750 V is
permitted for the PV generator.
All components of the DC input are ade-
quately dimensioned with a safety factor.
If the threshold is exceeded, the solar
inverter stops the feed-in and a «DC over-
voltage error» is displayed.
Display for DC overvoltage:
· AFI residual current
The AFI residual current (insulation error,
ground fault) is displayed if a residual
current has occurred in the PV system and
the solar inverter has subsequently discon-
nected from the grid. Ground faults are
monitored on both the AC and DC side
(universal current-sensitive FI). If this error
message is displayed, the entire PV system
must be checked for insulation errors. The
AFI residual current operated device only
monitors the phase into which feed-in
occurs.
Line 1 Error: UDC
Line 2 Overvoltage
Line 1 Error: AFI
Line 2 Residual current
Line 1 Error: TEMP
Line 2 Overtemperature