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12-01-2015, 04:58 AM
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#1
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Senior Member
Join Date: Jul 2015
Location: Maritime Provinces
Posts: 239
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Turning off converter and still allow 110V to work
Was wondering if I can turn off the converter while plugged into shore power. Do not need 12V or charge the batteries. I would like to put a small 110V heater inside without trying to find a way to fish an extension cord. I assume there is probably a breaker for the converter (WFCO 8955)
I appreciate the info
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MarsMan 
2015 Coachmen Prism 24J MBS
USN-R '01-present
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12-01-2015, 07:00 AM
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#2
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Senior Member
Join Date: Sep 2008
Location: jacksonville fl
Posts: 319
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Without the converter charging the batteries they will discharge and your frig and fans and some other items will not work until you get the batteries back up to power. Just plug the heater into one of the electrical outlets.
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12-01-2015, 07:17 AM
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#3
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Why do you even want to shut it off?
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12-01-2015, 07:47 AM
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#4
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Site Team
Join Date: Mar 2008
Location: Louisville, KY
Posts: 10,525
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We think you do need 12v for things like lights and control board for refrigerator and possibly TV antenna amp and in many rigs even the radio/dvd player-- all 12v.
Once batteries are fully charged the converter is pulling very little power.
If you are looking for more amps for a space heater you can shut off the electric heater in your water heater and heat water with LP. You could even put
the fridge on LP only.
Are you having problems with a tripped breaker??
Why do you want to shut off your converter?
__________________
Peace!
Dan & Rita D
2017 Nissan Titan 5.6L King cab 4wd
2016 Evergreen Everlite 242RBS
29' empty nest model. Blue Ox WD hitch
(1 queen bed, large main cabin and huge bathroom)
Camping days 2010-53, 2011-47, 2012-41, 2013-41, 2014-31, 2015-40, 2016-44, 2017-63, 2018-75, 2019-32, 2020-41, 2021-49, 2022-43, 2023-66
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12-01-2015, 12:54 PM
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#5
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Dahagen
Join Date: Apr 2013
Location: Cascade Idaho
Posts: 562
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Marsman...this is a trick question, right?
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12-01-2015, 05:42 PM
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#6
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Senior Member
Join Date: Aug 2014
Posts: 138
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is this so you can store the rv with a heater running, but don't want the converter to cook the batteries?
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12-01-2015, 07:58 PM
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#7
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Member
Join Date: Sep 2015
Posts: 71
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Quote:
Originally Posted by MarsMan
Was wondering if I can turn off the converter while plugged into shore power. Do not need 12V or charge the batteries. I would like to put a small 110V heater inside without trying to find a way to fish an extension cord. I assume there is probably a breaker for the converter (WFCO 8955)
I appreciate the info
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1) I'd disconnect batteries and leave the 12 volt system on if your batteries hold a charge. However, it won't hurt you batteries to leave them connected.
2) Usually you do not want to have a space heater on an extension cord.
3) I don't see the relationship between the 12 volt system and not wanting to fish an extension cord?! 110v heater? 12 volt converter. I would suspect most of your inside lights are 12 volt and you need the converter to supply the 12 volt power. If you disconnect the converter you will be powering off the batteries. Which you need to keep charged.
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12-01-2015, 08:44 PM
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#8
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Senior Member
Join Date: Nov 2013
Location: Seaford, De
Posts: 2,377
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I'm pretty sure you need 12 volts more than you realize. Lights for sure.
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David & Lynn 2014 Coachmen Chaparral Signature 327 RLKS 2016 Ford F350 Lariat CC Dually
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12-01-2015, 08:52 PM
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#9
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Senior Member
Join Date: Jun 2015
Location: Pensacola, FL
Posts: 1,645
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Quote:
Originally Posted by davel1971
I'm pretty sure you need 12 volts more than you realize. Lights for sure.
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And CO /LP detector.
Probably also fridge logic board and heat/A/C thermostat.
__________________
2019 Coachmen Freedom Express 192RBS
2015 T12RBST Flagstaff Hardside
Disclaimer: The actual value of my "Two Cents" of advice varies just like a bitcoin.
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12-01-2015, 10:57 PM
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#10
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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It's funny, the op has yet to respond to any of our comments or questions yet they've been on the forun Atleast once today.....
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12-02-2015, 01:00 AM
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#11
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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As far as I know there is no "switch" or fuse you can pull to kill just the inverter but keep the 110v on because they are directly integrated.
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*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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12-02-2015, 05:06 AM
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#12
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Senior Member
Join Date: Jul 2015
Location: Maritime Provinces
Posts: 239
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Quote:
Originally Posted by poorbuthappy
is this so you can store the rv with a heater running, but don't want the converter to cook the batteries?
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Yes- I have the batteries disconnected at the neg post... My solar will keep them maintained. I just want to put a heater in the rig and plug it into one of the interior 110V outlets.. I have her buttoned down and there are no gaps to bring in an extension cord and would rather use the main umbilical cord. no need to have the converter running. I think there is a breaker for it on the panel. I just need to get to the MH to have a look.
I live in an area with snow and ice. (could affect my solar panels) I may also hook up a maintainer and would like to plug into the 110 outlet inside the MH
thx for all the responses 
__________________
MarsMan
2015 Coachmen Prism 24J MBS
USN-R '01-present
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12-02-2015, 05:43 AM
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#13
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Senior Member
Join Date: Jul 2015
Location: Maritime Provinces
Posts: 239
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Quote:
Originally Posted by TURBS
Why do you even want to shut it off?
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Hey Turbs, good question. Batteries are disconnected and I do not require any 12V in the unit until I take her out next year.. was worried about having a converter active with no load and no batteries connected. Perhaps converters are low risk for faults or burnouts and I have nothing to worry about
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MarsMan
2015 Coachmen Prism 24J MBS
USN-R '01-present
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12-02-2015, 06:19 AM
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#14
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Senior Member
Join Date: Nov 2013
Location: Seaford, De
Posts: 2,377
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 now I'm more confused. Why is it plugged into shore power and you need 120 volt if you aren't camping till next year?
__________________
David & Lynn 2014 Coachmen Chaparral Signature 327 RLKS 2016 Ford F350 Lariat CC Dually
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12-02-2015, 07:43 AM
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#15
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Senior Member
Join Date: Jul 2015
Location: Maritime Provinces
Posts: 239
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I was worried about a converter running with no load on it or connected to batteries. Meanwhile I wanted to have 110 v heat and run some power tools as I do a few mods inside the MH. However, I just received an email back from WFCO saying it is OK to let the converter run even though it is not connected to a battery or the 12V is not being used.
again I appreciate all of your feedback
__________________
MarsMan
2015 Coachmen Prism 24J MBS
USN-R '01-present
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12-02-2015, 07:47 AM
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#16
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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I leave my unit plugged in 24/7 365.
Converter "4 stage" is also up and running and charging batteries.
More often then not my whole system is drawing 1 amp when I look @ the ems panel.
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12-02-2015, 10:09 AM
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#17
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Senior Member
Join Date: Sep 2008
Location: jacksonville fl
Posts: 319
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OK I think I understand. You live were it is COLD and you just want to run the 120v heater to keep it warm inside the camper and the batteries are not going to be used to run the lights, fridge, or fans.
So if you don't want the converter to run...pull the fuse (on the converter) out and it will not try to charge the batteries nor will you be able to use the lights, fridge, or fans unless you put the fuse back in. Mine has 2 fuses.
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12-02-2015, 11:11 AM
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#18
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2012 Solera
Join Date: May 2012
Posts: 1,824
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Quote:
Originally Posted by MarsMan
Was wondering if I can turn off the converter while plugged into shore power. Do not need 12V or charge the batteries. I would like to put a small 110V heater inside without trying to find a way to fish an extension cord. I assume there is probably a breaker for the converter (WFCO 8955)
I appreciate the info
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On our Solera the converter is on one of the circuit breakers. Turning off that breaker would turn off the converter (and, in my case, one 110 volt outlet that is on the same breaker) and would leave the rest of the 110 volt circuits on.
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JLeising
2012 Solera "S"
Calif SF Bay Area
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12-02-2015, 11:19 AM
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#19
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Phat Phrog Stunt Team
Join Date: Apr 2012
Location: Tipp City, OH
Posts: 7,154
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I would do as Turbs and just leave things alone and allow the converter to maintain the batteries. No sense in having another charger to do what the converter is already doing. If there is no (or minimal) draw on the system, the converter (fan) won't be running, at least until the battery needs a top off. That's what it's made to do, let it do it.
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2016 Georgetown 364TS
2017 Jeep Rubicon Recon toad
Nights Camped 2019 - 17
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12-02-2015, 10:50 PM
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#20
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Happy Camper
Join Date: Apr 2015
Location: Near Selma, Alabama
Posts: 153
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Just wait till the furnace (12 volt powered) won't come on.
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