Fan sound when turning on accent and rope lights

[Canuckrdp]

Getting our new unit ready for some camping today.

Turned on the accent lights on the interior and also the switch for the rope light underneath the awning and outside speakers.

We hear the sound of a fan running coming from down by the electrical control box by the floor in the kitchen.

Does anyone know what is making this sound and is it something we need to be concerned with?

It appears to happen only when the rope light switch is turned on but I can't be positive.  That is when I turned that switch off the fan sound appears to go away.

Any suggestions would be appreciated.

[DavidM]

When this happens are you also plugged into shore power? If so it could be the additional DC load from the lights triggering the converter's cooling fan. Try it with shore power disconnected. If it goes away, that is it and it is entirely normal.

David

[LANA/LARRY]

I agree with DavidM's analysis completely. This would particularly be likely if you had been running solo on battery power so that battery was significantly discharged and then went to shore power shortly before turning on the outdoor lights. I don't think you have anything to worry about. 

[K Syrah Syrah]

It's ok. Just the power station beefing up for the added load. I noticed it while on shore power. It sounds like the hamster runs faster as you turn on more lights, etc.