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Maintenance and Troubleshooting
6–4
975-0253-01-01
Identifying Error/Fault Conditions and Solutions
Most error or fault conditions will be identified by fault message screens on the
GT Inverter front panel LCD. These are described in the “Fault Mode” section on
page 5–8. Most of these fault conditions are self-correcting and require no user
action to remedy.
See “Front Panel Display Screens and What They Mean” on page 5–3 for more
information.
Table 6-1 is intended to assist in determining fault conditions that may require
user action to remedy.
WARNING: Shock Hazard
This section is for qualified electricians only. Only qualified electricians should attempt to
troubleshoot the GT Inverter.
Table 6-1
Troubleshooting the GT Inverter
Problem
Possible Cause
Solution
The inverter’s LEDs and display are
blank and the inverter does not
operate in sufficient sunlight.
Utility service panel AC and DC
breakers are switched off.
Turn on the breakers in the sequence
described in “Commissioning
Procedure” on page 4–2.
The display reads
Inverter Offline
and
AC Voltage Fault
.
Utility service panel breakers are
switched off.
AC grid voltage is not present or
incorrect.
Turn on utility panel breakers.
Check AC connections at the
inverter’s terminals. Ensure AC
voltage within the range specified in
“Output” on page A–2 is present.
The display reads
Inverter Offline
with sufficient sunlight.
DC breakers are switched off (if
installed), or DC fuses are blown (if
installed).
DC array voltage is not present.
Turn on any DC breakers and check
any DC fuses.
Check DC connections at the
inverter’s positive and negative DC
terminals. Check for incorrectly
wired PV arrays.
The display reads
Inverter Offline
and
DC Voltage Fault
with sufficient
sunlight.
DC voltage is present but incorrect.
Check DC connections at the
inverter’s positive and negative DC
terminals. Check for incorrectly
wired PV arrays. Ensure a voltage
within the operating voltage range is
present at the inverter’s terminals.
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Summary of Contents for GT 2.5-DE, GT 3.8-DE, GT 2.8-S
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Page 78: ...Maintenance and Troubleshooting 6 6 975 0253 01 01 www xantrex com ua ...
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