When you are plugged in and climate is on, the contactors are engaged and you are running on shore power, When you turn off cooling & heating, the contactors disengage and you are running on battery power. Makes sense why the message about the state of AC power shows up and disappears with the state of the climate control when plugged in.
The overall message relates to a voltage drop on the supply line, which happens due to faulty connections somewhere in the chain or with high current demand relative to the power supply. Could even be someone starts using the oven and dryer at the same time you are charging if your service is on the small side of average.
The overall message relates to a voltage drop on the supply line, which happens due to faulty connections somewhere in the chain or with high current demand relative to the power supply. Could even be someone starts using the oven and dryer at the same time you are charging if your service is on the small side of average.