Testing running roof air via inverter

Hi,

Yes, load support works with "weak" shore power supplies. But it does not support the AC voltage. It only draws extra current from the battery bank. I was quite disappointed when I found that out.

The fire happened because I turned off the inverter. That turns off the cooling fans in the Magnum. I.E. the fans only work when there is 120 volt power available. That is an unfortunate design choice. They should have used 12 volt DC fans.

The inverter did not shut down from over heating on the occasion of the fire.

Itinerant1 wrote:
I thought that one of the pluses of the hybrid was if there is "weak power" it can supplement it within the set parameters.

You say "One of the few design faults of the Magnum is that the cooling fans shut off when the inverter or generator are turned off." Unless I misunderstood about the ac/ fridge experience is once you turned off the ac/ fridge that is what you mean turning off the load support. Then when shutting down the generator you still left the inverter on gathering power from the sun to charge your batteries (I'm guessing that you had solar at the time). So unless the batteries where drained beyond the LBCO or you physically turned the inverter off the fans should stay running till the inveter cools off or it would of shut itself down before hand for over heating.

I've just went back into the manual a reread section 3 (operation) of load sharing and fault settings and it just seems there are features to prevent the inverter to operate with in the parameters (preset/ or manually changed) to operate with low voltage or "brown out" as stated in the manual.

The ground fault thing I have not come across since installing the system I've only been in maybe 6 state campgrounds that had power.