Why is POWEReasy showing a warning?
Your site has observed a high voltage harmonics. The older standard IEEE519-1992 recommends voltage harmonics to be constrained within 5%. Voltage harmonics can lead to malfunctioning electronic devices, humming in electromagnetic devices and overheating in transformers.
When do you need to fix this and why?
Critical Voltage Harmonics needs to be fixed immediately or it would damage your equipment