1. Check the system parameter settings, "Forbid mains charging" is not selected in the main options, as shown in the picture below.
2.Check whether the fuse at the mains input terminal is intact, and whether the rectified DC voltage around 310V is correct.
3. After a few minutes of power-on, test whether the DC voltage at the output terminal of the charging transformer has risen.
The picture below shows the battery voltage DC53V when the mains charging transformer is not working just after starting up.
The picture below shows the battery terminal voltage rises to the charging voltage DC56V after the mains charging transformer starts working after a few minutes of starting up.
inverter no vac output and the error code is DCBUS-L.
1.customer connected on the output other voltage engine generstor
As illustrated in above image, the place marked by red box is the actual location of IPM module.
The four points within the red ellipse are the points we need to measure.
Measurement procedures: measure IPM module-using multimeter,
and discharge white capacitance at first.
1.Use black probe to connect 0 point, and use red probe to connect 1, 2, 3 point respectively.
The value of measurement should be more than 500 normally.
2. Change black probe and red probe connection points.
Use red probe to connect 0 point, and connect 1, 2, 3 point
using black probe respectively. The value should be 1 under
normal condition as shown below, in another words,
exceeding multimeter’s measurement range.
If check all display 0V, means AC output part Mosfet(IPM Module) damaged.
2. change the Mosfet
pure sine wave inverter pure sine wave dc to ac inverter BP series power inverter DCBUS-low off grid solar inverter no vac output off grid solar inverter car inverter MOS tube BPlus series 600W vehicle inverter AC output DC input BP series pure sine wave inverter 3000W solar inverter 2000w B12P2000