Outback Power Systems GS8048 manual Inverter may be behaving correctly

Troubleshooting

	Table 2	Troubleshooting
Symptom	Possible Cause	Possible Remedy
Reduced power sold	AC source voltage is driven high	When the inverter senses a rise in grid voltage while selling, it
to the utility grid.	when the inverter sells large	reduces the sell current, to avoid forcing the voltage to
	amounts of power.	unacceptable levels. Check AC input voltage while selling. The
		inverter may be behaving correctly.
	Erratic AC source voltage.	Check AC voltage on the inverter’s input test points. (See page
		33.) If not consistent, the problem is external.
		MATE3 system display only: AC source voltage may have dipped or
		hovered at a low enough point to crash a sensitive load before
		the inverter could take over. This can happen if the inverter’s Grid
		AC Input Voltage Limits or Gen AC Input Voltage Limits were
		turned down to accommodate a problematic AC source. To make
		the inverter respond sooner, raise the lower limit setting in the
		appropriate menu. (If this setting was intentional, then no action
		is required.)
	Inverter set to Search (Search	The unit will take a moment to come out of Search mode after
	mode).	transferring.
Loads drop out or		MATE3 system display only: If constant power is required, set to
crash during
		ON with the INVERTER hot key. (If this setting was intentional,
transfer.
		then no action is required.)
	Loads sensitive to inverter’s	MATE3 system display only: Most of the inverter’s input modes
	transfer time. UPS mode not in	feature an approximately 12 ms transfer time. Certain loads (such
	use on the appropriate input.	as highly sensitive computers) may not respond well. The UPS
		input mode has a transfer time of less than 4 ms. Select this mode
		for the appropriate input. (See page 12.)
	Loads too large.	The unit can transfer more power than it can invert. If loads are
		oversized, the unit will falter or crash when switching to batteries.
		Reduce the size of the loads.
	Undersized battery cables.	Battery cables smaller than recommended will cause a significant
		voltage drop when switching to batteries, acting like either an
		overload or a low-battery condition. Size all cables correctly.
Unit reads AC input,	Internal transfer relay may be	Disconnect AC input wires and turn inverter on. Test the AC input
even though no	damaged.	and neutral test points with an AC voltmeter. (See page 33.) If
source is present.		voltage appears there, the transfer relay may be jammed. Contact
		OutBack Technical Support (see inside front cover of this manual).
		This problem is not common. If this occurs, it will likely occur on
		only the Grid or Gen input — not both.
	Inverter’s output has been	Disconnect the wires from the inverter’s AC input or AC output
	connected to its input. Voltage	terminals, or both. If the problem immediately disappears, it is an
	shifts are the result of trying to	external wiring issue. The inverter’s AC HOT IN and AC HOT OUT
Inverter clicks	match its own voltage.	must remain isolated from each other.
repeatedly. AC	Low AC input voltage. Can be	Test AC hot and neutral input test points with an AC voltmeter.
output voltage rises	caused by weak AC source, or	(See page 33.) If low or fluctuating, this is an external problem.
or drops to unusual	by faulty input connection.
levels with every
click.	A generator is connected to the	The inverter is not intended to sell power to a generator. The
	input terminals while the unit is	selling activity will drive the generator voltage up to the
	in the Grid Tied input mode.	disconnection point. It will then reconnect to the generator and
		try again. Change input modes, or move the generator to an
		input with a different mode selected.

36 900-0020-01-00 Rev A