I bought and installed the 1PM Wave to check the power consumption of a room. But my problem is that the values are way too high. Sometimes 100 W too much. Or when it supposed to be approx. 20 W it shows 100 W.
I replaced the Wave with a 1PM Plus, which shows a valid Watt value. I also verified it with an EM, and again the value of the EM is as expected and the value from the 1PM Wave is way off.
What is the problem here?
PS: The 1PM Wave cannot measure negative values.
