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09-03-2011, 09:52 PM
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#1
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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help needed on electrical system problem
After smelling a burning electrical smell, now all 12-volt power is on, but the 110 isn't working when plugged in. Everything works on the generator, but nothing on the inverter or the main 50 amp plug. Inverter says it is drawing 250 watts, which can't be right.
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-03-2011, 10:00 PM
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#2
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Winnebago Camper
Join Date: Mar 2010
Location: Fowlerville, Mich.
Posts: 18
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Start by checking the connections on the transfer switch.
Greg
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2000 Monaco Diplomat 40PBD
2012 Grand Cherokee Limited
2008 FatBoy, three spoiled Great Danes and a cat.
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09-03-2011, 10:01 PM
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#3
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Winnebago Watcher
Join Date: Oct 2009
Location: Billerica, MA
Posts: 1
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When you had "burning electrical smell", were you on shore power or generator or none ?
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09-03-2011, 10:02 PM
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#4
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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checked that, no problem there
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-03-2011, 10:03 PM
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#5
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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burning smell noticed when we were on 50 amp shore power. running convection oven, AC, and clothes dryer. We have a surge protector.
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-03-2011, 10:04 PM
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#6
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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naturally it's Saturday night of a holiday weekend 
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-03-2011, 10:08 PM
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#7
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Winnebago Camper
Join Date: Mar 2010
Location: Fowlerville, Mich.
Posts: 18
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Did you look inside the xfer switch? If the xfer switch connections look ok, then pop the cover off of the circuit breaker box and check things in there. The other possibility would be the inverter/charger.
Greg
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2000 Monaco Diplomat 40PBD
2012 Grand Cherokee Limited
2008 FatBoy, three spoiled Great Danes and a cat.
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09-03-2011, 10:13 PM
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#8
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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we think it is the inverter/charger. Is there a way to override it somehow? Again, all works fine on the generator
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-03-2011, 10:23 PM
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#9
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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what's the transfer switch?
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-03-2011, 10:48 PM
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#10
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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ok, found transfer switch. no problems seen there or with circuit breakers. Found all wiring diagrams on Winnebago's website. All appliances and systems work perfectly on generator power, but no 110 appliance works on shore power alone, or with inverter running
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-04-2011, 09:41 AM
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#11
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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12 hours later
Generator worked again this am, but nothing works on shore power alone.
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-04-2011, 10:18 AM
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#12
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Winnebago Watcher
Join Date: Jan 2000
Location: Bakersfield, Ca. U.S.A.
Posts: 1
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Just a thought. Check to see if your shore power cord isn't shorted out and burnt through, where it comes into the rig, or where it comes into any pinch point. Hope this helps.
Joe
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99 F-350 4X4 PSD pulling a 24' Nash travel trailer
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09-04-2011, 11:02 AM
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#13
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Winnebago Owner
Join Date: Aug 2002
Location: San Jose, CA,US
Posts: 74
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Chked transfer switch. Power in but none out on shore pwr. All works on gen. Ordered new transfer switch. Meanwhile we will dry camp. Also checked cord and no shorts apparent. Thx for all the responses. Any other ideas?
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2006 Itasca Meridian 36G
Towing a 2011 Honda CRV
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09-04-2011, 11:20 AM
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#14
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Winnebago Master
Join Date: Dec 2005
Location: Buxton, North Dakota
Posts: 1,037
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There may also be a transfer switch built into the inverter/charger. Does the inverter supply AC to all circuits?
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2003 Winnebago Adventurer 38G F53/ V10 605 watts of Solar
1999 Winnebago Brave 35C Handicap Equipped
F53/V10
1999 Jeep Cherokee & 1991 Jeep Wrangler Renegade
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09-04-2011, 11:24 AM
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#15
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Winnebago Owner
Join Date: Jan 2010
Posts: 119
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Just to be clear, the problem exist only off shore power. Everything works off the generator.
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2007 Newmar DSDP 4023
Discovery is seeing what everyone else has seen and thinking what no one else has thought.
If you want to see what man made go East; if you want to see what God made go West.
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09-04-2011, 06:26 PM
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#16
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Winnebago Master
Join Date: Sep 2007
Posts: 724
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Quote:
Originally Posted by RJay
Just to be clear, the problem exist only off shore power. Everything works off the generator.
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check this resource. 
http://www.rvcruzer.com/electrical/tutorial.php
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01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car
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09-05-2011, 07:38 AM
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#17
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Winnebago Owner
Join Date: Jun 2009
Posts: 149
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If you are saying with generator OFF and 50amp Shore Power connected and ON that, using pdf page 6 of drawing http://www.winnebagoind.com/diagram/...ire_153624.pdf, you have:
On center cable (shore power cable) you have 110VAC between black to white AND 110VAC between red to white;
but on the bottom cable (load center cable) you do not have 110VAC between black to white AND 110VAC between red to white.
If that is the case, then the transfer switch is defective. The switch auto transfers from shore to generator when it detects the presence of generator power.
Dave
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09-05-2011, 10:07 AM
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#18
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Winnebago Master
Join Date: Mar 2009
Posts: 851
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The burning smell indicates a serious issue that MUST be fixed pronto. Do not attempt to override as this can bring the fire department a-calling on your rig.
Since the Inverter shows power (I am assuming it shows power in) start with it's junction box.. Look for evidence of burned wires/poor connection. When I had the same problem you have (inverter showed power in, showed voltage (But not current) out, that was the first, and last, place I looked.. once I cleaned up the mess, re-dressed the wires and re-did the connection everything still works..
Withing the last month I smelled burning and my rear A/C refused to work ,blew the breaker in fact.. Again In found a junction box (in this case the 2nd place I looked was the last, Re-dressed and re-connected and it's working as I type.
Now; Back to the inverter: When you get that junction (Terminal) box open. "Attack" with volt meter, 200 or 250 volt range.. Make sure there is output..
If not, start looking to the input.
250 watts.. could be it's charger circuit charging the batteries and providing 12vdc to the house lights by the way.
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