Inverter fans always running

[dale farley]

Joe, This is a good thread to revisit. I need to check the fan/fans on my bus. I've got two 4000 watt inverters, and I don't recall that I've ever heard the fans running.

[Joe Camper]

Dale I know on the heart inverters where to point a hot air blow dryer in the right louvers as u r looking at it. Don't know where the sensor is on trace or magnum or outback. Regardless the blow dryer should still make them go. Also I wouldn't do it with a garage type heat gun stick to the lessor hair dryer to be safe. I'm sure some might think I can't even see my inverters.......well, can't help that it's an important piece of the puzzle none the less.

Also I'm assuming outback and magnum internal cooling fans r set up the same IE fans only go on charge mode and r temp controled. That needs to be clarified if someone please could? Up to now I have no experience with those.

[Gil_J]

Joe,

While in inverter mode, inverter/chargers can still get toasty. I'm not sure why the internal fan only runs in charger mode. Here's what the Trace SW model manual states:

"As an inverter, overheating can be caused by attempting to operate too large of a load for too long, a failure of the inverter cooling fans, or that the air flow into or out of the inverter is blocked."

Most, if not all, inverter/chargers used by converters will raise an alarm if they get too hot. If the fan is inoperative an overheat alarm will likely be experienced.