Just hoked my Apex300 to a transfer switch. Been switching the outputs off and on to make sure every thing is OK. 2 days after hook up my dinning room lights flashing off and on every 3 seconds. I dimmed the lights to lowest setting, now they flash every 6 seconds. This is a three way dimmer switch.
2. Have a hybrid water heater. My wife yells at me there is a funny noise coming from basement. I go down and it’s the water heater making a hammering noise every 3 seconds. Soon as I connect it back to grid it stops hammering. Almost seems like the compressor is kicking off and on.
HELP Thanks in advance