Owner`s manual

2.1.3 Search Mode Watts

This control is used for adjusting the sensitivity of the search mode circuit. Since the Model 2000

Power Backup System is being used as an Uninterruptible Power Supply (UPS), the search mode

function should be defeated by turning the control completely to the left (counter clockwise).

Protection Circuitry

The inverter will automatically restart itself from the following overload conditions: low

battery, high battery, shorted output, over current and over temperature.

The inverter will turn itself off and require a manual restart if it encounters an overload for

approximately 10 seconds (a prolonged short circuit), or if AC output is directly connected

to an AC power source.

Two LED's are provided to report on error conditions - OVERTEMP (2.1.4) and BATTERY

CONDITION (2.1.5).

2.1.4 Over-temp Red / Overload Grn

This LED lights RED when the inverter's temperature is too high for safe operation and is GREEN if

the load is too large for the inverter to safely operate. When the temperature returns to a safe level,

the inverter restarts. The inverter will restart automatically if the overload condition lasts for less than

10 seconds.

If the green overload LED is on when the unit is in the charger mode, then there is a charger fault.

This means that the charger is charging even though the regulation system is trying to turn it off. The

unit will turn this LED on when a fault is detected, and will continue for up to one hour if the condition

persists. After this period the charger will shutdown, disconnect the relay and continue to display the

green overload LED. The unit may be reset manually by pressing the power on/off button, and will

continue to operate for another one-hour period if the condition has not been corrected. The inverter

portion will continue to work normally throughout this type of fault.

The green overload LED will also come on in the event of a "back feed" condition. This condition

could occur if AC power is applied to the inverter's output. The LED will light from 1-10 seconds when

the condition is detected, after which the inverter will shutdown. To correct this condition, remove the

AC input power from the inverter's output. The unit must be reset by pressing the on/off power button.

CAUTION: Repeated connection of an AC source directly to the AC output may cause damage to the

inverter.

2.1.5 Battery Hi Red / Battery Low Grn

This LED lights RED when battery voltage is too high for safe operation, and is GREEN when voltage

is too low for safe operation. When the voltage returns to a safe level, the inverter restarts

automatically.