Troubleshooting Guide; Maintenance - Cobra High Gear HG-PI1000 Operating Instructions Manual

Troubleshooting Guide

Trouble- Problem /Symptom Possible Causes Solution
Low output voltage
shooting
on voltmeter
Guide
(96 VAC to 104 VAC)
Low output voltage
and current indicator
in red zone
No output voltage
and voltage
indicator in
lower red zone
No output voltage,
no voltage
indication
No output voltage
voltage indicator in
upper red zone
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Using average Use true RMS
reading meter reading
Overload Reduce the
load
Low input Recharge
voltage battery,
check
connections
and cable
Inverter switched Turn inverter
Off, no power to On, check
inverter, wiring to
fuse open inverter.
Have qualified
service
technician
check and
replace
Reverse DC Observe
polarity correct
polarity
High input voltage Make sure the
inverter is
connected to
12 V battery,
check regulation
of charging
system
Problem /Symptom Possible Causes Solution
Low battery alarm on Poor DC wiring,
all the time, poor battery
voltage indicator condition
below 11 V
No output voltage Thermal shutdown
if load in excess of
1000W or 8.7 amperes
No output voltage Short circuit
or wiring
error

Maintenance

Very little maintenance is required to keep the invert-
er operating properly. The exterior of the unit should
be cleaned periodically with a damp cloth to prevent
accumulation of dust and dirt. At the same time,
tighten the screws on the DC input terminals. Be sure
vents and fans are free of dust or debris.
Maintenance
Use proper cable,
make solid
connections,
use new battery
Allow inverter to
cool off
Reduce load, con-
tinuous operation
input current
required
Improve ventila-
tion; make sure
ventilation open-
ings in the inverter
aren't obstructed.
Reduce ambient
temperature
Check AC
wiring for
short circuit or
improper
polarity
Maintenance
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