Installation Manual

3.0 Operation

Protection Mode

There are ﬁ ve fault conditions that will cause the inverter to shut

down: Low Battery, High Battery, Over-temperature, AC Overload,

and Internal faults. If your inverter has shut down, monitor the

status indicator and count the number of blinks that occur every

four seconds to determine the particular reason for the shutdown.

Refer to the Troubleshooting section to help diagnose/clear the

fault condition.

• Blinks on 1 time every four seconds - Low Battery fault.

• Blinks on 2 times every four seconds - High Battery fault.

• Blinks on 3 times every four seconds - Over-temperature

fault.

• Blinks on 4 times every four seconds - AC Overload fault.

• Blinks on 5 times every four seconds - Internal fault.

Charge Mode

The green LED status indicator provides additional

information:

• Blinks off every four seconds - The unit is charging the

batteries connected to the inverter. The external AC power

(utility power or generator) connected to the inverter’s input

is passing through the inverter and is powering the AC loads

connected to the inverter’s output.

Factory Default Settings

The MM-AE Series inverter/charger uses default settings that are ad-

equate for most installations (see Table 6). However, you can adjust

these parameters using Magnum’s optional ME-RC50 remote. The

settings once programmed are saved in non-volatile memory and are

preserved until changed – even if DC power to the inverter is lost

(the ME-RC50 must always be connected). The following information

can help you determine if you need the ME-RC50 remote*.

01 Search Watts: This setting allows you to turn off the power-saving

Search Mode circuitry and to adjust the power level at which the

inverter will “wake up” and start inverting.

02 Low Battery Cut Out: This setting determines when the inverter

will turn off based on low battery voltage. The inverter turns off

automatically after the battery voltage has been below this setting for

more than one minute. This protects the batteries from over-discharge

and the AC loads from unregulated power (brown-outs).

* Visit www.magnumenergy.com for more information.