Knock to make the display become bright Knock to item “Model: GTXXXXXX” Double
knock to enter voltage range setting Knock to change “QLD VMAX 255V”it to “Normal Vot
range” wait until the display become dark, then the inverter saved change.
Note: This function is only for Ergon Energy area, Queensland, Australia.
1.2.2.2 higher than 262V
Voltage calibration by RS232 USB cable
Our inverters support communication function via cable, please use RS232 USB cable and PC
computer to recalibrate your inverter’s voltage sensor as follows：
Turn on DC switch, compare the grid voltage measured by multi-meter, and the AC voltage
displayed on the inverter. If the difference is more than 3V, please calibrate the detected AC
voltage of the inverter by following steps:
• Connect the inverter to PC via RS232 USB cable.
• Open the software, ShineCHKVac to calibrate AC voltage as below picture.
• Turn on the AC breaker, then type the whole number of the voltage value measured
by multi-meter. For example, if the multi-meter measured grid voltage is 230.2V,
you can input 230, if the grid voltage is 230.6V, you should input 231V.
Please make sure to input the right COM port number of your PC.
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