
10.
11.
13. WARRANTY
We take the guarantee of one year from the purchasing day. During the guarantee
period, any malfunction caused by our product quality, our company will fix or replace
the unit for free. But any one of the following conditions is beyond our guarantee terms.
1. The box distorted, damaged or changed, and interior parts damaged because of the
exterior hit or drop.
2. Connect the DC power adversely.
3. Dismantled or repaired the unit by un-granted person.
4. The unit was damaged by incorrect installation or operating method.
B. TROUBLESHOOTING TIPS
●
Reduce the load power, or turn on the
appliance first, then turn on the inverter.
●
Choose a bigger inverter
●
Change a bigger battery and ensure fully
charged.
No output voltage,
buzzer whistles
continuously
Problem
Reason
Solutions
Low Input DC Voltage
High Input DC Voltage
Overload
Over temperature
●
Check the rated voltage of the battery and
make sure that it is in the allowable range of
the input voltage.
●
Do not use it when the battery is charging
Reduce the load power
●
Restart it after it resumes to normal
temperature. Reduce the load. avoid
blocking the vent and improve the
ventilation condition.
●
Cut off the load and let it cool naturally for
10 to 30 minutes.
No AC output
voltage?
1.The power switch is off.
2.Poor contact with battery.
●
Check the cables and make sure they are
tightly connected.
●
Press the power switch for 1-2 second to
turn it on. it is a long press type switch
Output voltage
below
100 V AC?
“True RMS”voltage meter is
required to properly measure
output
voltage of modified
wave inverter
Cannot drive the
load?
Tester indicated
"Open Ground"?
This is because it is not connected
to a"true Earth ground ", meaning it
is not connected to a metal rod
stuck in the
Earth. it would be
impossible to do so in a boat or car
while moving. The power
inverter
DOES NOT and cannot create a
true Earth ground on its own.
●
Change the battery of the meter then test
again.
●
Try to maintain the input voltage in the
range of rated power
●
Test output voltage with a True RMS meter
3.Battery is too small.
2.The starting power is larger than
rated
power (especially for
appliances with
motor)
1.Load power is too large. Or the
actual
power of the appliance
exceeds
nominal power.
●
Refer to the manual to do the Grounding
●
Don't need the tester to do the Grounding
Test.
Starting alarm ?
instantaneous current is too large,
which leads to the detection of low
voltage and trigger under-voltage
alarm.
The main reason is that ths
Please restart the inverter several
times.
Got 40V or so while
testing inverter's
ground wire and
zero line?
This voltage has no meaning,
zero
line can be ground.
This is normal, there is no current
leakage.
Low Input DC Voltage
If the unit still doesn't work normally after using all the methods above, it maybe
the internal faults of the circuit. Please contact seller for warranty.
Содержание PS-4000QAR
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