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What does "Er.1 (Error 1)" of ITV2030-222BS mean and how can we solve it?
As the rated input voltage is 0 to 5 VDC, when input signal exceeds 150% of the rated input signal (i.e. 7.5 V), the display will show "Er1". To resolve this, please check to see if the input signal is within the rated range. Then, turn off power and turn it on again.