Xantrex Technology GT3.0 owner manual Identifying Error/Fault Conditions and Solutions

Maintenance and Troubleshooting

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 5–6 of this manual. 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.

Table 6-1Troubleshooting the GT Inverter

•ProblemThe inverter LED	CauseAC/DC Disconnect Switch	RemedyTurn on AC/DC Disconnect Switch and breakers in the
indicator lights do not	is off, or utilty service	sequence described in “Startup Procedure” on page 4–2.
illuminate, and the	panel AC or DC breakers
inverter does not	are switched off.
operate in sufficient
sunlight	No AC grid or DC array	Check source of the AC voltage. Ensure that the inverter
• The display reads	voltage is present.	AC/DC Disconnect Switch is set ON.
“Inverter Offline”
• The Vdc reading is 0.		Check AC connections and ensure AC voltage within the
		range specified in “Output” on page A–2 is present.
		Check DC connections. Check the DC voltage on the
		positive and negative input terminalsand ensure
		195–550 Vdc is present.
		Check for incorrectly wired PV arrays or try again on a
		day with brighter sunlight intensity.
Only the inverter RED	Ground fault condition	Check for any fault messages on the display (see
LED is illuminated.	detected.	Table 5-8 on page 5–7). System should be checked by a
		qualified electrician and repaired.

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