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acceptable.
The battery voltage is too low.
Check if the spec and
quantity of batteries are
acceptable.
Check if wiring is connected
well and remove the
abnormal
load.
Fault code 05
AC Output short circuited.
Fault code 06/58
Output abnormal (Inverter AC voltage
below 180Vac or over 290Vac)
Remove the connected load.
Return to repair center
Fault code 07
Overload error. The inverter is
overloaded over 110% and time is up.
Reduce load wattage.
Fault code 20
BMS communication failed.
Check the BMS
communication wire to see if
it’s well connected
Check the transceiver signal
Fault code 51
Over Current In Invert Mode
Restart the unit, if the error
happens again, please return
to repair center.
*The reason for the noise from transformer and/or case
When in inverter mode and the transformer and/or case of the inverter sometimes may vibrate and make
noise.
The noise may come from transformer.
According to the characteristics of our inverter, there is one type of load which is most likely to cause rattles
of the transformer; that is a half-wave load, load that uses only a half cycle of the power (see figure 1). This
trends to cause an imbalance of the magnetic field of the transformer, reducing its rated working frequency
from 20KHz to, say, maybe 15KHz (it varies according to different loads). This way, the frequency of noise
falls exactly into the range (200Hz-20KHz) that human ear can hear.
The most common load of such kind is a hair drier.
If the noise comes from the inverter case.
Normally when loaded with inductive loads,
the magnetic field generated by transformer keeps attracting
or releasing the steel case at a specific frequency, this may
also cause noise.
This noise may also be generated the moment a load is
detected in the power saver mode.
Reducing the load power or using an inverter with higher
capacity will normally solve this problem.
The noise will not do any harm to the inverter or the loads.
5 Warranty
We warrant this product against defects in materials and workmanship for a period of one year from the date
of purchase and will repair or replace any defective M Series Inverter when directly returned, postage
prepaid, to manufacturer. This warranty will be considered void if the unit has suffered any obvious physical
Figure 1
Half Cycle Load Waveform
