PROBLEM: Measured inverter output is too low.

Possible Cause

Standard “average-reading” AC voltmeter used to measure output voltage, resulting in an apparent reading 5 to 15 volts too low.

Battery voltage is too low.

Suggested Remedy

Inverter’s “modified sine wave” output requires “true RMS” voltmeter, such as Fluke 87 series multimeter, for accurate measurement.

Recharge battery.

PROBLEM: Alarm is sounding.

Possible Cause

Suggested Remedy

Low voltage shutdown or thermal shutdown has occurred.

Shorten cables or use heavier cables. Recharge battery. Allow unit to cool. Improve air circulation around unit. Locate unit to a cooler environment. Reduce load if continuous operation is required.

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