Installation Manual

4.0 Maintenance and Troubleshooting

Recommended Inverter and Battery Care

The MM-AE Series inverter/charger is designed to provide you with

years of trouble-free service. Even though there are no user-service-

able parts, it is recommended that every 6 months you perform the

following maintenance steps to ensure optimum performance and

extend the life of your batteries.

WARNING: Prior to performing these checks, switch

both the AC and DC circuits OFF.

• Visually inspect the batteries for cracks, leaks, or swelling –

replace if necessary.

• Use baking soda to clean and remove any electrolyte spills or

buildups.

• Check and tighten all battery holddown clamps.

• Clean and tighten (10 to 12 foot-pounds) all DC terminals

(battery and inverter) and connecting cables.

• Check and ﬁ ll battery water levels (Liquid Lead Acid batteries

only).

• Check individual battery voltages (replace those that vary

more than 0.3 VDC of each other).

• Check all cable runs for signs of chaﬁ ng – replace if necessary.

• Check the inverter’s cooling vents – clean as necessary.

Resetting the Inverter

Under some fault conditions (i.e., an internal fault), the inverter will

need to be reset.

To reset the inverter:

Press and hold the Power ON/OFF pushbutton for approximately

15 seconds, or until the status LED comes on and ﬂ ashes rapidly

(see Figure 2, Items 1 and 2).

Release the Power ON/OFF pushbutton once the rapid ﬂ ashing

has begun. The status LED will go off.

Press the Power ON/OFF pushbutton again to turn the

inverter on.

Info: The Power ON/OFF pushbutton is a small momentary

type switch which operates by lightly pressing and

releasing.