21
PROBLEM: Measured inverter output is too low.
PROBLEM: Alarm is sounding.
Possible cause
Remedy
Standard “average-
reading” AC voltmeter
used to measure output
voltage, resulting in an
apparent reading 5 to
15 V too low.
Inverter’s “modified sine
wave” output requires “true
RMS” voltmeter for accurate
measurements.
Battery voltage is too
low.
Recharge battery.
Possible cause
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.
