question

Bump. Has anyone got any clues?

What are the settings in the Orion?.

Apart from engine detection, there are other settings that can turn off charging. But your low voltage across a fully charged battery is suspicious

Could be a wiring issue. But let's work on settings first.

Not sure what you mean by "low voltage across a fully charged battery is suspicious" as this is normal if the alternator backs-off when the battery is fully charged.

Here are the settings;

And it's wired like this for the override option when the engine is running;

12.3V is low for a fully charged battery with no load. Should be around 12.7V. I could be caused by high resistance in the connections, thin cable, poor connections. Poor fuse connection.

Looks like shutdown detection is overriding the LH inputs. That's on 12.5V, you're dropping below that.

That is understood, but I've wired the remote connection as in section 4.5 of the manual which states; "The “engine shutdown detection override” forces the charger to allow charging independently of the engine shutdown detection."

But that isn't happening, charging is being shutdown even though the setting should have been overriden by the presence of 12v on the L/H inputs and only stop when that goes low, hence my question as this is not waht is happening.

Hi @NotMyRealName

What is the input voltage lockout setting that you are using? could it be that that is set to a "high" voltage?

The override only disables the engine shutdown detection, but not the input voltage lock-out.

Kind regards,

Thiemo van Engelen