11
Over Voltage Protection - The Power-On-Board™ 400 will
automatically shut down when the input voltage exceeds 15 volts DC.
Short Circuit Protection - Reverse polarity or a short circuit condition will
usually result in the fuse being blown. Immediately disconnect the shorted
load and replace the fuse as described in section 3.4.
Overload Protection - The inverter will automatically shut down when
the continuous draw exceeds 400 watts.
Over Temperature Protection - When the temperature sensor inside the
Power-On-Board™ 400 reaches 150
°
F, the unit will automatically shut
down. Allow the unit to cool for at least 15 minutes before restarting
after a heat-related shutdown. Unplug unit while cooling.
Low Battery Alarm - An alarm will sound when the voltage from the
battery drops to 10.6 volts. This is an indication that the battery needs to
be recharged. The user should stop operation of the electronic device at
this time since the inverter will shut down automatically shortly there
after, when the battery voltage drops to 10 volts. Start your engine to
recharge the battery.
If the low voltage alarm sounds when the battery is fully charged, follow
the steps for solving lack of output power in the Troubleshooting Guide.
The alarm will sound when the inverter is overloaded, in thermal
shutdown, or if there is an excessive voltage drop between the battery
and inverter.
NOTE:
It is normal for the alarm to sound while the unit is being
connected to, or disconnected from, the power source. This is not
indicative of a problem.
6.
COMMON PROBLEMS
"Buzzing" sound in audio systems:
Some inexpensive stereo systems and "boom boxes" emit a buzzing
sound from their speakers when operated from the Power-On-Board™
400 power inverter. This occurs because the power supply in the
electronic device does not adequately filter the modified sine wave
produced by the inverter. The only solution to this problem is to use a
higher quality sound system that incorporates a higher quality power
amplified supply.
