Whirring noise from inverter

maroua wrote:
It may be the converter, not sure about terminology.
This morning the battery died, even though we had been connected to shore power.
Should I replace the battery first and see what happens?

INVERTER uses battery 12vdc to produce 120vac to power 120v items when camped off grid.

CONVERTER uses 120vac to produce 12v power to keep the battery charged and power the 12v items in the RV.

Dead 12v system (lights etc.) points mostly to a failed converter. Need to separate the battery and converter to test/verify what the problem is. Remove the battery and use a portable charger to see if it will charge. Your 12v systems should run directly from the converter. Post converter model for best suggestions on replacement.

That's what I think maybe going on.
I will have to look at it and give info later. Not near the camper at this time.

It sounds to me like the battery is bad and the converter fan was running because the converter was trying to supply power to the failing battery. However, with a 2014 RV, that seems like a very short battery life.

Can you tell us what converter you have? Have you checked the water level in the battery?

It may be the converter, not sure about terminology.
This morning the battery died, even though we had been connected to shore power.
Should I replace the battery first and see what happens?

Just so the OP can tell us if he means inverter or converter, an inverter takes 12 vdc input and gives out 120 vac. The converter takes 120 vac shore power and puts out 12+ vdc to charge the battery and power the 12v equipment in the RV.

I think there may be the possibility that they are talking about their converter which also has a cooling fan.

maroua wrote:
After reading a bit, I flipped a couple of breakers and it seems to go away when I turn off electric water heater breaker

If you are not on shore power, why would the wh be on electric from inverter sucking your batteries dry
Are you dry camping with the shore cord plugged into the inverter?
Then all appliances should be on manual and on propane

And if you are on shore power, the water heater should not be wired to the inverter anyway

With some inverters the cooling fan in thermostatically controlled. Large load, more heat, fan comes on. Load reduces, inverter cools down, fan shuts off. Some inverters, this is programmable.

Mine varies the noise with the load...

After reading a bit, I flipped a couple of breakers and it seems to go away when I turn off electric water heater breaker