| House power [message #347549] |
Mon, 09 September 2019 08:24  |
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Samuel Ferguson
Messages: 107
Registered: September 2019
Location: Pittsfield, Illinois
Karma: 0
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Generator running - AC is only thing that will come on. No power to lighting, recptacles, or roof vent fans.
Samuel Ferguson
Summer Hill, Illinois
(West Central Illinois)
1976 GMC Palm Beach
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| Re: House power [message #347552 is a reply to message #347549] |
Mon, 09 September 2019 08:36  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
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Those items all run off 12Vdc. So your power convertor is not working and house battery is dead, or you have power issues to your 12Vdc fuse distribution panel
Edit: Opps you said receptacles too. So since your A/C is working then you must have power to the breaker panel. Check the breakers in the 120V panel to be sure none have tripped. Also the wires inside the panel can work loose after 40 years of shaking down the road. Pull the 120V power cord, open the panel and tighten all wire fasteners. If you do not know how to do this safely, get an Electrician to do it.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
[Updated on: Mon, 09 September 2019 08:39] Report message to a moderator |
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| Re: House power [message #347553 is a reply to message #347549] |
Mon, 09 September 2019 08:36 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Lighting and fans are pretty much all 12v. Be sure all the breakers are on and the 12v 'converter' (a simple or somewhat sophisticated 12 volt power supply)is producing voltage at its output. Then have a look at the 12v fuse panel and see if maybe some are missing or blown. Report back.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: House power [message #347554 is a reply to message #347549] |
Mon, 09 September 2019 08:38 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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You say the receptacles are dead? but the genset runs? Check the breakers again. One of the two on top may be tripped. Or there may be a loose connection in the breaker box. Please to unpower the coach before opening that box.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: House power [message #347556 is a reply to message #347549] |
Mon, 09 September 2019 08:40 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Lights and roof vents are 12 volt, receptacles are 110 but since we don't know which coach or year you have it could be something as simple as a breaker needing flipped or shore power cord plugged in to coach. On some coaches with 2 roof A/Cs one runs off the generator and the other off shore power. You need to tell us more, guessing won't work.
Samuel wrote on Mon, 09 September 2019 09:24Generator running - AC is only thing that will come on. No power to lighting, recptacles, or roof vent fans.
C. Boyd
76 Crestmont
East Tennessee
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| Re: House power [message #347558 is a reply to message #347556] |
Mon, 09 September 2019 08:44 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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[ok 76 Eleganza. Converter not working or getting power. Bad breaker or connection at fuse box.
quote title=C Boyd wrote on Mon, 09 September 2019 09:40]Lights and roof vents are 12 volt, receptacles are 110 but since we don't know which coach or year you have it could be something as simple as a breaker needing flipped or shore power cord plugged in to coach. On some coaches with 2 roof A/Cs one runs off the generator and the other off shore power. You need to tell us more, guessing won't work.
Samuel wrote on Mon, 09 September 2019 09:24Generator running - AC is only thing that will come on. No power to lighting, recptacles, or roof vent fans.
[/quote]
C. Boyd
76 Crestmont
East Tennessee
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| Re: House power [message #347561 is a reply to message #347560] |
Mon, 09 September 2019 09:26 |
6cuda6
Messages: 975
Registered: June 2019
Karma: -6
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Sounds like its possibly the way the generator connector is wired into the fuse box....perhaps its set up to only run the A/C?
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: House power [message #347570 is a reply to message #347552] |
Mon, 09 September 2019 11:23 |
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Samuel Ferguson
Messages: 107
Registered: September 2019
Location: Pittsfield, Illinois
Karma: 0
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I'm a newbie to this type of rv. Is it an inverter or a converter? I checked the receptacles and I do have power to them and the AC unit, with generator running. Lights and Refrigerator do not come on with generator running. Lights, receptacles and refrigerator all work with rv being plugged in to shore power. Do the lights and refrigerator go through the inverter/converter?
Can the inverter/converter be bad to where it would work fine on shore power but not work from generator?
Samuel Ferguson
Summer Hill, Illinois
(West Central Illinois)
1976 GMC Palm Beach
[Updated on: Mon, 09 September 2019 11:34] Report message to a moderator |
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| Re: House power [message #347572 is a reply to message #347570] |
Mon, 09 September 2019 11:28 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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If the generator is running, maybe the circuit breaker on the generator is open.
Or the shore power plug has to be plugged into the generator.
I've got one of these:
Progressive Dynamics PD9260CV Inteli-Power 9200 Series Converter/Charger with Charge Wizard - 60 Amp
It's a battery maintainer and 12V supply.
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
[Updated on: Mon, 09 September 2019 11:30] Report message to a moderator |
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| Re: House power [message #347573 is a reply to message #347549] |
Mon, 09 September 2019 11:36 |
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Samuel Ferguson
Messages: 107
Registered: September 2019
Location: Pittsfield, Illinois
Karma: 0
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Can the converter be bad to where it would work fine on shore power but not work from generator?
Circuit Breaker on generator? Location?
Samuel Ferguson
Summer Hill, Illinois
(West Central Illinois)
1976 GMC Palm Beach
[Updated on: Mon, 09 September 2019 11:37] Report message to a moderator |
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| Re: House power [message #347576 is a reply to message #347549] |
Mon, 09 September 2019 12:38 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Sort of. The original Triad buzz box converter was somewhat particular about 60Hz frequency due to a resonance circuit. If your gen is running too fast or too slow it could be an issue.
Also with gen off, open the 14-50R receptacle box in the cable cubby. You should have a jumper wire between the L1 and L2 connections so both sides get 120V power.
Breaker for Onan is on top of unit.
John Lebetski
Woodstock, IL
77 Eleganza II
[Updated on: Mon, 09 September 2019 12:39] Report message to a moderator |
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| Re: House power [message #347577 is a reply to message #347573] |
Mon, 09 September 2019 12:40 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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I wouldn't think so.. The shore power works everything but when you plug the shore power cord into the generator receptical in the cord door only part of the stuff works? Is there any chance your PO did what mine did and added another plug in the power cord hole for an inverter to supply 110volts off the batteries? It bought has to be a loose wire connection from the gen plug to the circuit breaker box or something loose in the box.
Samuel wrote on Mon, 09 September 2019 12:36Can the converter be bad to where it would work fine on shore power but not work from generator?
Circuit Breaker on generator? Location?
C. Boyd
76 Crestmont
East Tennessee
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| Re: House power [message #347582 is a reply to message #347579] |
Mon, 09 September 2019 14:40 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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The lights and fridge work off 12 volts even the propane fridge needs 12volts for the controls and should work without being plugged in or generator working.
When the generator or plugged in the Outlets work so the converter is plugged in an outlet so you have 12 volts if the outlet the converter is plugged in to has 110 volts. Somewhere battery voltage is not getting to fuses. Is the fridge propane or all electric? What kind of converter do you have? A picture would certainly help. You can go to the top of the forum home page and post a picture using the first "sticky" post. It can be tricky as you have to follow directions exactly or maybe just tricky for me as it took me 10 years to get er done. Or you can go to photo site and register and create albums then you can go to address bar and copy and paste here. [url]http://www.gmcmhphotos.com/photos.html]
I'm still thinking you have a loose or dirty connection somewhere. Physically pull on the connections. I had a friend call and say " it won't start. I checked the connections and they are tight." I say "pull on them".
Samuel wrote on Mon, 09 September 2019 14:26Yes ,everything works on shore power. On generator, only AC and receptacles work. No power to lights or refrigerator.
I do not see another plug in the cord box.
C. Boyd
76 Crestmont
East Tennessee
[Updated on: Mon, 09 September 2019 15:32] Report message to a moderator |
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| Re: House power [message #347584 is a reply to message #347582] |
Mon, 09 September 2019 14:58 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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Your issue should be with your house battery, not your engine cranking battery. For the heck of it hold down the battery boost switch on dash and see if stuff works. Since you have a GMC outfitted Palm Beach switch should be spring loaded and have to hold it to check stuff. Grandkids or wives are good for this.
C. Boyd
76 Crestmont
East Tennessee
[Updated on: Mon, 09 September 2019 15:00] Report message to a moderator |
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| Re: [GMCnet] House power [message #347592 is a reply to message #347555] |
Mon, 09 September 2019 18:25 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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OK finally we figured out what coach and electrical system he has:
It is a 1976 Palm Beach with a 50 amp 240 volt shore power
connection.
Now you need to figure out if he is
1. moving the shore power cord correctky between the shore power and the Onan receptical.
2. If everything works correctly on shore power then everything from the shore power connector on into the coach is OK. This is because all of the same stuff is used by both shore and Onan power.
3. The problem has to be between the Onan 4 prong 50 amp receiptical, back to the Onan itself.
I would first be checking the Onan voltage at one of the house plugs for 120 VAC and around 60 cycle. If that is good I would be checking for 120VAC at the output of the circuit breaker for the converter. If that is missing, then the only other place to look is on the back of the 50 amp Onan connector for the jumper that connects the hot leads together or to one of the female connectors. You might just have a dirty or burned female connector terminal.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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