Outback Power Systems GS8048 manual Troubleshooting, Symptom Possible Cause Possible Remedy

Troubleshooting

	Table 2	Troubleshooting
Symptom	Possible Cause	Possible Remedy
	No AC input.	Check the AC voltage on the inverter’s input test points. (See
		page 33.) If not present, the problem is external. If present, the
		inverter could be damaged. Contact OutBack Technical Support
		(see inside front cover of this manual).
	AC input not connected on	Check the AC voltage on the inverter’s input test points. (See
	both L1 and L2.	page 33.) Both L1 and L2 must have voltage. The inverter will not
		accept an input from only one leg.
	AC source is not 120/240 Vac	Confirm the nature of the AC source. Check the AC voltage
	split-phase, or the AC source	between L1, L2, and neutral on the inverter’s input test points.
	neutral is not connected to the	(See page 33.) L1-neutral and L2-neutral voltages should be
	inverter.	120 Vac. L1-L2 voltage should be 240 Vac. Other voltages or
		combinations, such as two phases of a three-phase source
		(208 Vac), or 240 Vac without a neutral, will not be accepted.
	Inverter’s L1 output has been	Disconnect the wires from the inverter’s AC input terminals or AC
	connected to its L2 input, or the	output terminals, or both. If the problem immediately disappears,
	other way around. This	it is an external wiring issue. The inverter’s input and output
	problem is accompanied by	terminals must remain isolated from each other.
	shifts in frequency.
	AC source does not meet	MATE3 system display only: Check the Last AC Disconnect screen
	requirements.	(using the AC INPUT hot key and the Discon selection) for the
		reason for disconnection. If the unit never originally connected,
		check the Warning menu (using the Inverter soft key from the
		Home screen). Confirm source voltage and frequency.
Will not connect to
	AC source meets requirements	MATE3 system display only: The Generator input mode can accept
the AC source.
	but is “noisy” or irregular.	irregular AC power. Select that mode for that input.
	Inverter was manually set to	MATE3 system display only: Change the AC Input Control setting
	disconnect from AC.	from Drop to Use with the AC INPUT hot key. (If this setting
		was intentional, then no action is required.)
	Grid use function has	MATE3 system display only: If activated prematurely, check both
	disconnected from AC.	the MATE3’s Grid Use Time settings and the MATE3 clock settings
		in the System menu. (If this setting was intentional, then no
		action is required.)
	High Battery Transfer (HBX)	MATE3 system display only: Check the AC INPUT hot key screen
	mode has disconnected from	to see if HBX mode is in use. If activated prematurely, check the
	AC.	settings of HBX mode. (If this setting was intentional, then no
		action is required.)
	Mini Grid input mode has	MATE3 system display only: Check the Inverter part of the Settings
	disconnected from AC.	menu to see if Mini Grid mode is in use. If activated prematurely,
		check the settings of Mini Grid mode. (If this setting was
		intentional, then no action is required.)
	Offset function has caused the	The Offset function sends excess renewable energy to the loads
	inverter to disconnect from AC.	to augment the AC source. If more renewable energy is produced
	(Support, Backup, UPS, and	than the loads can consume, the AC source is judged unnecessary
	Mini Grid input modes.)	and the inverter disconnects from it. (See page 19.)
	Conflicting programming.	MATE3 system display only: Check to see if more than one of the
		following are enabled: Mini Grid, HBX, Grid Use Time. These have
		conflicting priorities and only one can be used at a time.

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