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Open Roads Forum  >  Travel Trailers  >  General Q&A  > fan in circuit-breaker box is cycling every 10 seconds Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  trailernovice • View posts Mission TX Senior Member Joined: 10/25/2010 View Profile Offline Posted: 10/09/22 07:42pm Link  |  Quote  |  Print  |  Notify Moderator The circuit-breaker box in this TT is just under the fridge...there's a small fan in the compartment.... That fan is cycling about every ten seconds....on for three seconds, then off for five seconds or so, and then on again....then the cycle repeats Is this normal? I've never noticed this before Glenn and Toni 2019 Jayco JayFlight SLX8 264 BH 2019 Ram 1500 5.7 3.21 gears Reese round bar w/d with sway control Bobbo • View posts Wherever I park Senior Member Joined: 09/16/2007 View Profile Good Sam RV Club Member Offline Posted: 10/09/22 08:19pm Link  |  Quote  |  Print  |  Notify Moderator I don't know if it is normal behavior for your RV or not, but I can tell you what it is. It is the cooling fan for the converter that provides 12v power to power your RV's 12v system, and to recharge the battery bank. Mine runs whenever the converter is under a heavy load, like recharging depleted batteries. Bobbo and Lin 2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6 2017 Airstream Flying Cloud 23FB MFL • View posts Midwest Senior Member Joined: 11/28/2012 View Profile Good Sam RV Club Member Offline Posted: 10/10/22 05:26am Link  |  Quote  |  Print  |  Notify Moderator The cooling fan runs, when the converter/charger is under heavy load. If it runs on/off continuous, I would check battery condition. May need new battery, or water added to battery. Water way too low, likely need new battery. The converter itself could be failing, some are better than others. What model do you have? Are you running any device, that may cause converter to overwork? Jerry phillyg • View posts SWFL Senior Member Joined: 04/24/2002 View Profile Good Sam RV Club Member Offline Posted: 10/10/22 07:16am Link  |  Quote  |  Print  |  Notify Moderator Yep, they normally run on a longer cycle, like for minutes at a time, or stay on if the electrical load is high. You're probably going to have to contact the panel mfgr. to do a troubleshoot. I'm going to make a WAG that its location below the fridge has something to do with it. --2005 Ford F350 Lariat Crewcab 6.0, 4x4, 3.73 rear --2016 Montana 3711FL, 40' --2014 Wildcat 327CK, 38' SOLD valhalla360 • View posts No paticular place. Senior Member Joined: 08/19/2009 View Profile Good Sam RV Club Member Posted: 10/10/22 07:17am Link  |  Quote  |  Print  |  Notify Moderator As above, unless you have a large 12v draw that is cycling on and off, likely a bad battery or charger issue. Tammy & Mike Ford F250 V10 2021 Gray Wolf Gemini Catamaran 34' Full Time spliting time between boat and RV Vintage465 • View posts Prunedale CA. Senior Member Joined: 05/02/2015 View Profile Offline Posted: 10/10/22 07:22am Link  |  Quote  |  Print  |  Notify Moderator All the above is on target. Also, not trying to be "uppity" here, but if it has a WFCO brand converter, it could just be giving up on you. My WFCO brand lasted about 7 years, then one night it just sorta freaked out, fan running on and off and the power was visibly going up and down as the lighting fluctuated bright and dim(well...not so bright). My batteries were perfect, the converter just up and croaked. I got a Progressive Dynamice retro-fit to replace it.....easy peasy, if that turns out to be the issue. V-465 2013 GMC 2500HD Duramax Denali. 2015 CreekSide 20fq w/450 watts solar and 465 amp/hour of batteries. Retired and living the dream! time2roll • View posts Southern California Senior Member Joined: 03/21/2005 View Profile Good Sam RV Club Member Posted: 10/10/22 07:44pm Link  |  Quote  |  Print  |  Notify Moderator Check the battery voltage, check for excessive battery gassing and heat. Disconnect the battery and see if the fan issue stops. Post the results. Also post the breaker panel make and model number. 2001 F150 SuperCrew 2006 Keystone Springdale 249FWBHLS 675w Solar pictures back up dodge guy • View posts Bartlett IL Senior Member Joined: 03/23/2004 View Profile Offline Posted: 10/11/22 09:37am Link  |  Quote  |  Print  |  Notify Moderator In the past n TT’s I found that of the battery is weak or getting weak the converter/charger runs more. Wife Kim Son Brandon 17yrs Daughter Marissa 16yrs Dog Bailey 12 Forest River Georgetown 350TS Hellwig sway bars, BlueOx TrueCenter stabilizer 13 Ford Explorer Roadmaster Stowmaster 5000, VIP Tow> A bad day camping is better than a good day at work! KKELLER14K • View posts BEAVERTON OREGON Senior Member Joined: 12/15/2006 View Profile Offline Posted: 10/12/22 02:32am Link  |  Quote  |  Print  |  Notify Moderator Question...Are you parked, plugged into shore power and disconnected from the tow rig when you noticed this? If so.. Have you moved the TT since? IF you are parked with shore power make sure you didn't accidently engage the electric brakes. If you moved you obviously could feel the brakes drag but check the pin on the emergency switch. This happened to me. The pin got pulled out slightly, didn't notice until the extra load caused the fan to run to cool the converter. Seems unlikely but something to look for. 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Jump to Forum Dear Marcus  - Good Sam Roadside Assistance  - Good Sam Club  - Good Sam Insurance  - Camping World Accessories  - Camping World RV Sales  - Good Sam Extended Service Plan  - Camping World Service and Inst...  - Coast to Coast Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Tech Issues  - Do It Yourself Modifications a...  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Posting Help and Support Locations  - RV Parks, Campgrounds and Attr...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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