23ck bathroom light question

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   We're away on a  trip without the manual so can't figure this out - hopefully someone can provide an answer.
We are hooked up to 30 amp power and, with only the fridge and main ceiling lights on (the four round lights - two each in front of the upper cabinets on each side of the interior), when the bathroom lights are turned on it appears a fan (at least that's what it sounds like) starts to run in the brown square vented box just below the fridge, beside the furnace. The fan only turns on when the bathroom lights are turned on and only when the main lights are already on. If these main lights are off, or even if the other ceiling lights (rectangular ones in the centre of the room) are on, and the bathroom lights are turned on, the fan does not run.

Can someone advise why this fan comes on and what it does?? It's weird but we have used the trailer many times before but have never noticed this fan coming on....

Thanks

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Marpel Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Weekend Camper Joined: 15 Oct 2011 Status: Offline Points: 23	Post Options Post Reply Quote Marpel Report Post Thanks(0) Quote Reply Topic: 23ck bathroom light question Posted: 07 May 2012 at 11:21pm
	We're away on a trip without the manual so can't figure this out - hopefully someone can provide an answer. We are hooked up to 30 amp power and, with only the fridge and main ceiling lights on (the four round lights - two each in front of the upper cabinets on each side of the interior), when the bathroom lights are turned on it appears a fan (at least that's what it sounds like) starts to run in the brown square vented box just below the fridge, beside the furnace. The fan only turns on when the bathroom lights are turned on and only when the main lights are already on. If these main lights are off, or even if the other ceiling lights (rectangular ones in the centre of the room) are on, and the bathroom lights are turned on, the fan does not run. Can someone advise why this fan comes on and what it does?? It's weird but we have used the trailer many times before but have never noticed this fan coming on.... Thanks

tator447 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Full Time Camper Joined: 16 Nov 2011 Location: Beaver Dam, WI Status: Offline Points: 712	Post Options Post Reply Quote tator447 Report Post Thanks(0) Quote Reply Posted: 07 May 2012 at 11:26pm
	The light in the bathroom is 12v DC, so when you turn it on the fan you here running the power converter, taking the A/C current coming into your unit and sending DC to those lights that are DC. Jim
	2013 Crusier CF34SS Ford F250 PSD 7.3L Bully Dog ;

Stan Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Full Time Camper Joined: 09 Apr 2006 Location: Oak Harbor, WA Status: Offline Points: 1672	Post Options Post Reply Quote Stan Report Post Thanks(0) Quote Reply Posted: 07 May 2012 at 11:49pm
	Jim's correct. The more DC stuff you have on the more the converter will work. The fan will run to cool the converter. My fan has several speeds and runs faster (and louder) as you turn on more DC lights.
	Stan and Terri Oak Harbor, WA 2008 Chevy 2500HD D/A 2007 Cruiser CF30SK Glide Ride Pin Box Reese 16K Slider

Marpel Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Weekend Camper Joined: 15 Oct 2011 Status: Offline Points: 23	Post Options Post Reply Quote Marpel Report Post Thanks(0) Quote Reply Posted: 08 May 2012 at 6:43pm
	Greta. Thanks very much.

Walkingstick Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Family Vacation Camper Joined: 11 Apr 2012 Location: PA Status: Offline Points: 102	Post Options Post Reply Quote Walkingstick Report Post Thanks(0) Quote Reply Posted: 08 May 2012 at 7:02pm
	Jim is right. not to worry

Marpel Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Weekend Camper Joined: 15 Oct 2011 Status: Offline Points: 23	Post Options Post Reply Quote Marpel Report Post Thanks(0) Quote Reply Posted: 09 May 2012 at 3:08pm
	By the way, I meant "Great" in my response, not Greta. The computer crashed immediately after posting, so could not edit.......