That would suggest you are using the new C5 settings. C5=6 should give you around 18 amps.C5 settings 1 and 2 do absolutely nothing.
C6 Backlight Brightness Adjustment Mode - KEC KT-LCD3 User Manual [Page 28]
KEC KT-LCD3 Manual Online: C6 Backlight Brightness Adjustment Mode. Enter C6 parameter setting interface after C5 parameter setting is finished, C6 parameter column flashes. C6 is the meter backlight brightness adjustment mode. The default value is 3, and setting range is 1-5, hold...
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