Found steam boiler to be overfilled. Either all the way up to the top of the heat exchanger or into the steam pipe. Drain system all the way down. Turn power and open water gate valve back up. Let automatic fill fill and stop repeated this process five times to verify that the Fill valve is stopping properly. Each time I drain the system low water cut off light came on after a time. It energize the auto fill which filled to the correct position. On fourth attempt. Automatic fill shut off before low water cut off with satisfied. Checked automatic fill controls and it seems that a relay inside the control is broken. Automatic fill should be replaced. If the relay fails open having everything shut off. It could also fail closed, causing the boiler to overfill Kevin’s gonna get back with you with a price to replace the auto fill