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05-22-2022, 11:46 AM
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#1
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Member
Join Date: Oct 2012
Posts: 35
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Flickering lights
2014 40qbh. Plugged into shore power. Power seems stable, but after an hour or so, my ceiling lights start to fade or flicker. Not quite used to the charger inverter settings yet. I have the shore power set to 50 amps. Any ideas? This is only our second trip with this rig.
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05-22-2022, 12:05 PM
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#2
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Senior Member
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 3,898
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Disconnect all power from the coach. While doing so, feel if the shore power cord cap at the pedestal is warm or hot. If so, there’s you first clue.
Look for any discoloration of the prongs on the shore power cord cap.
Next, open the breaker panel and remove the breaker cover. Check every wife clamping screw for tight. Look around for burned wire insulation at the breakers and on the neutral bars.
Am assuming the lighting you speak of is 120vac lighting.
If 12VDC lighting - what do you do to get the lighting working again?
__________________
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
‘03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
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05-22-2022, 12:13 PM
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#3
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Senior Member
Join Date: Nov 2015
Posts: 25,532
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Lights are 12VDC
Flickering suggest DC Voltage going down
Check to make sure House Batteries are being charged...
*Disconnect switch ON
*Inverter/charger DC Output...reset
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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05-22-2022, 03:09 PM
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#4
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Member
Join Date: Oct 2012
Posts: 35
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Quote:
Originally Posted by MrMark52
Disconnect all power from the coach. While doing so, feel if the shore power cord cap at the pedestal is warm or hot. If so, there’s you first clue.
Look for any discoloration of the prongs on the shore power cord cap.
Next, open the breaker panel and remove the breaker cover. Check every wife clamping screw for tight. Look around for burned wire insulation at the breakers and on the neutral bars.
Am assuming the lighting you speak of is 120vac lighting.
If 12VDC lighting - what do you do to get the lighting working again?
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I have been hitting the charger power switch twice, then they get brighter and stop flickering…
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05-22-2022, 03:13 PM
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#5
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Senior Member
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 3,898
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I would be checking all the 12 volt wire connections between the convertor and batteries.
Be looking for corrosion or loose connection. Feel for warm terminations (which is a sign of corrosion in that connection).
You could have a week battery bank as well. Would surprise me if so on a 2019 coach, but . . . .
__________________
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
‘03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
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05-22-2022, 05:33 PM
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#6
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Member
Join Date: Oct 2012
Posts: 35
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Quote:
Originally Posted by MrMark52
I would be checking all the 12 volt wire connections between the convertor and batteries.
Be looking for corrosion or loose connection. Feel for warm terminations (which is a sign of corrosion in that connection).
You could have a week battery bank as well. Would surprise me if so on a 2019 coach, but . . . .
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Well, it’s a 2014 coach but the battery codes show they are from 2019!
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05-22-2022, 06:54 PM
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#7
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Senior Member
Join Date: May 2014
Posts: 787
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We had that problem and found that it was the solenoid for the salesman switch going bad.. bypassed it for a while and then put a new on in.. our problem was solved.
__________________
2004 Holiday Rambler Endeavor DST,07Chevy Colorado
Jefferson City, Missouri
Navy Viet Nam vet 67/71 USS Decatur DDG 31
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05-23-2022, 08:04 AM
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#8
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Senior Member
Join Date: Nov 2013
Posts: 5,678
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Our 2015 40 QBH did the same thing as well when we bought it in 2020. When I was in Tiffin Service in Red Bay, I was told that one of the lights is on the way out and just wait for it to die for replacement. For whatever reason, now that we have used the coach more, it hasn’t done it in a long long time.
__________________
2015 Tiffin Phaeton 40QBH
2018 Chevrolet Colorado Toad
Roadmaster Tow Setup
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05-23-2022, 08:09 AM
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#9
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Junior Member
Join Date: May 2022
Posts: 15
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Sounds like you may have a converter that is on it last leg. Check voltage at battery with converter on and with converter off and see if you get a difference in voltage readings. You should be getting anywhere from 13.2 to 13.7 with the converter working appropriately.
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05-29-2022, 08:52 PM
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#10
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Member
Join Date: Oct 2012
Posts: 35
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 negative terminal on the bottom right battery. The terminal tab snapped right off!
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05-30-2022, 06:15 AM
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#11
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Senior Member
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 3,898
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Quote:
Originally Posted by MrMark52
I would be checking all the 12 volt wire connections between the convertor and batteries.
Be looking for corrosion or loose connection. Feel for warm terminations (which is a sign of corrosion in that connection).
You could have a week battery bank as well. Would surprise me if so on a 2019 coach, but . . . .
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Quote:
Originally Posted by kevinyeamans
Attachment 366919 negative terminal on the bottom right battery. The terminal tab snapped right off!
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Thar ‘ya go! 😀
__________________
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
‘03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
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06-07-2022, 03:59 PM
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#12
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Senior Member
Tiffin Owners Club
Join Date: Jan 2019
Posts: 112
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Quote:
Originally Posted by kevinyeamans
Attachment 366919 negative terminal on the bottom right battery. The terminal tab snapped right off!
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I have to arrange my cables as I pull out or push in the tray. Otherwise they will snag on the battery hold-down rods.
__________________
Walter & Loretta
2011 Tiffin Allegro Bus 40 QXP
2013 Cadillac SRX
2021 GMC Canyon Denali
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06-07-2022, 04:23 PM
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#13
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Senior Member
Newmar Owners Club Grand Design Owners Club
Join Date: Apr 2014
Location: Winter-New Port Richey
Posts: 456
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Check your ground connections in the inverter and fuse box. sounds like it may heat up and become unstable
__________________
Mark
2021 Grand Design 395 MS-R / F350 DRW diesel
also -295 RL 34 ft Montana 5th and many more
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06-08-2022, 08:34 AM
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#14
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Senior Member
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 3,898
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Quote:
Originally Posted by MCJones
Check your ground connections in the inverter and fuse box. sounds like it may heat up and become unstable
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Issue was resolved and solution provided - Post #10.
__________________
‘91 Ultrastar Champion‘02 Georgie Boy Landau 8.1l Workhorse
‘03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
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