Go Power! GP-1750HD - Manual (Page 12)

Go Power! Modified Sine Wave Inverter
Owner’s Manual
12
6.2 Input voltage
The power inverter will operate from input voltage ranging 10 V – 15 V. If the voltage
drops below 10.7 V, an audible low battery warning will sound and the voltage indicator
will be in the lower red zone. The power inverter will shut down if the input voltage
drops below 10 V. This protects your battery from being over discharged.
The power inverter will also shut down if the input voltage exceeds 15 V. This protects
the inverter against excessive input voltage. The voltage indicator will be in the upper
red zone. Although the power inverter incorporates protection against overvoltage, it
may still be damaged if the input voltage is allowed to exceed 20 V.
7. Troubleshooting
7.1 Common problems
a) Buzz in audio systems
Some inexpensive stereo systems will emit a buzzing noise from their
loudspeakers when operated from the power inverter. This is due to the power
supply in the device does not adequately filter the modified sine wave produced
by the power inverter. The only solution is to use a sound system that
incorporates a higher quality power supply.
b) Television
interference
Operation of the power inverter can interfere with television reception on some
channels. If this situation occurs, the following steps may help to alleviate the
problem.
• Make sure that the chassis ground lug on the back of the power inverter is
solidly connected to the ground system of your vehicle, boat or home. With the
exception of the GP-2500 which would connect to one of the mounting screws.
• Do not operate high power loads with the power inverter while watching
television.
• Make sure that the antenna feeding your television provides an adequate ("snow
free") signal and that you are using good quality cable between the antenna and
the television.
• Move the television as far away from the power inverter as possible.
• Keep the cables between the battery and the power inverter as short as possible
and twist them together with about 2 to 3 twists per foot. This minimizes radiated
interference from the cables.
7.2 Troubleshooting guide
Problem and Symptoms Possible Cause Solution
Low AC output voltage
95-105 VAC. Using standard
voltmeter. Use true RMS averaging
meter.
Low output voltage and
current indicator in red zone. Overload. Turn off. Reduce load, turn
on.
No output voltage and
voltage indicator in lower red
zone. Low DC input
voltage. Recharge battery, check
connections and cable.
Note:
There
are audible low
voltage / over
load alarms on all
inverters.