Outback-power-systems GS4048A Operators Manual Manual de usuario descargar pdf (Pagina 54)

Troubleshooting

52 900-0161-01-00 Rev A

Table 6 Troubleshooting

Symptom

Possible Cause

Possible Remedy

Reduced power sold

to the utility grid.

AC source voltage is driven high

when the inverter sells large

amounts of power.

When the inverter senses a rise in grid voltage while selling, it

reduces the sell current, to avoid forcing the voltage to

unacceptable levels. Check AC input voltage while selling. The

inverter may be operating correctly.

High temperature.

The inverter will reduce the current rate for selling and other

activities if the internal temperature exceeds a certain level.

Check temperature readings and allow the inverter to cool if

necessary. (See page 57.) External cooling may also be applied.

Inverter does not

perform the Offset

function when

expected.

Incorrect input mode.

Offset does not function in

Generator

UPS

, and

Backup

modes.

Specific mode only offsets

under particular conditions.

Support

mode will perform the Support function based on load.

This may appear as Offset without reaching the reference voltage.

Grid Zero

mode will perform Offset based on the

DoD Volts

setting. Other reference voltages are not used.

Unusual voltage on

hot or neutral

output line.

System neutral and ground may

not be bonded.

Test

L1 OUT

L2 OUT

, and

N OUT

test points with AC voltmeter.

(See page 49

.) These measurements should give full voltage. Test

neutral and ground connections. This measurement should read

zero volts. Any other result means neutral and ground are not

bonded correctly. If this is the case, the hot line often reads 60

to75 Vdc and the neutral reads 45 to 60 Vdc with respect to

ground. (If bonding is not required or is prohibited by national or

local codes, then no action may be required.)

Unusual and

different voltages

on AC hot input

lines.

Input neutral is not connected

correctly. The inverter also may

not connect to the AC source.

Test L1 input and neutral connections with AC voltmeter.

Test L2 input and neutral connections with AC voltmeter.

(This can be on

Grid

Gen

input, depending on where the

symptoms appear.) Test L1 to L2 input. From hot to neutral

should be approximately 120 Vac unless the output has been

adjusted. L1 to L2 should be approximately 240 Vac. If the two

outputs are different voltages but still add up to 240 Vac, the

neutral is not connected to the inverter.

Inverter has not synchronized

with input source.

MATE3 system display only: The

AC In

reading accessed by the

Inverter soft key may be erratic or inaccurate after initial

connection until the inverter has synchronized with the AC

source. This may require a short time.

Loads drop out or

crash during

transfer.

Erratic AC source voltage. Check AC voltage on the inverter’s input test points. (See

page 49.) 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

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

mode).

The unit will take a moment to come out of Search mode after

transferring.

MATE3 system display only: If constant power is required, set

with the

INVERTER

hot key. (If this setting was

intentional, then no action is required.)

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