10272-CPI475_PH2.qxd
7/9/07
Troubleshooting Guide
Operation
Troubleshooting Guide
Problem/Symptom
Possible Causes
Low output voltage
Overload
No output voltage
Low input voltage
No output voltage
Thermal
after prolonged use
shutdown
No output voltage,
High input
"Protect" indicator
voltage
lighted
No output voltage
Short circuit
No power to
Blown fuse
inverter
Low battery alarm
Poor DC wiring
on all the time
Poor battery
condition
14
11:30 AM
Page 14
Operation
•
Specifications
Solution
Continuous output power (1 hour) . . . . . . . . . . . . 400W
Surge rating (0.1 second) . . . . . . . . . . . . . . . . . . . 800W
Reduce the load.
Peak efficiency (12V – 1⁄2 load) . . . . . . . . . . . . . . > 88%
Recharge battery.
Efficiency (full load, 12V) . . . . . . . . . . . . . . . . . . . > 83%
Check connections
and cable.
No load current draw . . . . . . . . . . . . . . . . < 0.5A (12.6V)
Output waveform (resistive load) . . . Modified sine wave
Allow inverter
to cool off.
Output frequency . . . . . . . . . . . . . . . . . . . . 58HZ – 62HZ
Output voltage . . . . . . . . . . . . . . . . . . . . . . 109V – 120V
Reduce load,
continuous
USB output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V
operation input
Input voltage . . . . . . . . . . . . . . . . . . 10.4VDC – 14.4VDC
current required.
Alarm voltage (unload) . . . . . . . . . . . . . . .10.2V – 10.8V
Improve ventilation;
Shutdown voltage (unload) . . . . . . . . . . . . . 9.2V – 9.8V
Make sure ventilation
Operating temperature range . . . . . . . . . . . . 0°C – 40°C
openings in the
inverter are not
Storage temperature range . . . . . . . . . . . . -40°C – 85°C
obstructed.
Reduce ambient
Protection . . . . . . . . . .Overload, short-circuit, overtemp,
temperature.
Notes
Make sure
the inverter is
connected to
All protection is automatically recovered.
12V battery.
To protect the battery, if the unit needs to be restarted
Check regulation
after low voltage protection, the voltage of DC input
of charging system.
should be above 12V.
Check load for
To extend the life of the fan, it will stop when there is no
proper operation.
load. The speed of the fan increases as the load increases.
Replace fuse.
The unit is completely insulated in input and output for
added safety.
Check
connections.
Make sure battery
is fully charged.
Specifications
•
(32°F – 104°F)
(-40°F – 185°F)
reverse polarity, under/over voltage
Nothing Comes Close to a Cobra
15
®