I have, on a friends boat, a fairly standard Victron LFP set up with a VE Bus BMS controlling a Cyrix Li-Charge for over voltage protection and and Battery Protect for under voltage protection.
My assumption is that under normal conditions the Cyrix relay should always be closed and passing charge current, either from the solar or the engine alternator.
What appears to be happening is that the Cyrix relay is clicking open when the engine is running, even though the voltage on its output terminal is only 14.1V.
Can anyone provide any insight as to why the Cyrix is opening? Am I right in my assumption that it should be closed at all times under normal operation as long as the charge disconnect wire from the BMS is high?