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02-05-2018, 08:57 PM
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#1
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Junior Member
Join Date: Feb 2018
Posts: 5
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Power problem
We have a 2016 class C Forester. When we arrived at our current location, we discovered that the lights on one side of our camper will not turn on. Any ideas on what may cause it? What can I look for?
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02-05-2018, 09:04 PM
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#2
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Retired Marine
Join Date: Jan 2018
Location: Spotsylvania
Posts: 16
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Did you check your fuses? Lights are generally d.c. and protected by d.c fuses.
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02-05-2018, 11:41 PM
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#3
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Junior Member
Join Date: Feb 2018
Posts: 5
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The fuses all check out ok. And the circuit breakers as well.
Is it possible that a fuse looks ok but is still blocking the power?
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02-06-2018, 12:04 AM
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#4
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by Sallyann
The fuses all check out ok. And the circuit breakers as well.
Is it possible that a fuse looks ok but is still blocking the power?
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YES
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02-06-2018, 12:06 AM
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#5
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by Sallyann
We have a 2016 class C Forester. When we arrived at our current location, we discovered that the lights on one side of our camper will not turn on. Any ideas on what may cause it? What can I look for?
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My trailer has a wall sw at the door and each light has a switch on it. both have to be on.
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02-06-2018, 10:44 AM
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#6
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Junior Member
Join Date: Feb 2018
Posts: 5
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Power
Quote:
Originally Posted by FMcCue
Did you check your fuses? Lights are generally d.c. and protected by d.c fuses.
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Don’t have any masters switch. Only the battery bypass which always stays in on
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02-06-2018, 12:05 PM
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#7
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by Sallyann
Don’t have any masters switch. Only the battery bypass which always stays in on
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FMcCue didn't ask about master switches. HE/She told you that some of your lightings is 12 volts and for you to check your 12-volt fuses which I agree with.
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02-06-2018, 12:14 PM
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#8
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,502
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Quote:
Originally Posted by cavie
FMcCue didn't ask about master switches. HE/She told you that some of your lightings is 12 volts and for you to check your 12-volt fuses which I agree with.
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Cavie, Sallyann merely quoted the wrong post. You are the one who brought up a master switch concept when you wrote "My trailer has a wall sw at the door and each light has a switch on it. both have to be on. "
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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02-07-2018, 08:33 PM
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#9
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Junior Member
Join Date: Feb 2018
Posts: 5
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Power
We have further narrowed down our problem. It’s only the 12 volt lights that are off. They are only the ones on our slide-out. We got a “reverse polarity” message on our surge protector. I think this may have been caused by a faulty computer ac adapter.
Anybody have some suggestions about a cause or solution?
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02-07-2018, 08:45 PM
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#10
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Senior Member
Join Date: Jun 2015
Location: Pensacola, FL
Posts: 1,645
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In order to narrow it down to the main 12 volt supply, or just a branch circuit: If you have a water pump, does it work or not?
__________________
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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02-07-2018, 09:01 PM
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#12
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Senior Member
Join Date: Oct 2016
Location: SW PA
Posts: 907
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If all the lights on the slide are not functioning I would look closely at the fuses. Typically there are only a few circuits that feed everything on the slide. Also it is possible that the wiring going to the slide has become cut or disconneted. What model coach do you have, that info will help with the troubleshooting.
__________________
2021 Newmar Baystar 3401
2019 Jeep Cherokee Trailhawk toad
2017.5 Forester 3051S Traded 7/2020
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02-07-2018, 09:33 PM
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#13
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Retired Marine
Join Date: Jan 2018
Location: Spotsylvania
Posts: 16
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Quote:
Originally Posted by Steve-W
If all the lights on the slide are not functioning I would look closely at the fuses. Typically there are only a few circuits that feed everything on the slide. Also it is possible that the wiring going to the slide has become cut or disconneted. What model coach do you have, that info will help with the troubleshooting.
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Steve is on the right track. If your issue is limited to one part of the trailer (slide) you are more than likely dealing with a blown d.c. fuse or disconnected wire. Fuses might look ok, you can check them for continuity with a multimeter. If you can see the wiring harness for your slide, make sure none of the wiring has pulled lose.
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02-07-2018, 10:10 PM
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#14
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by Sallyann
We have further narrowed down our problem. It’s only the 12 volt lights that are off. They are only the ones on our slide-out. We got a “reverse polarity” message on our surge protector. I think this may have been caused by a faulty computer ac adapter.
Anybody have some suggestions about a cause or solution?
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Check your pedestal. Reverse polarity will cause LEDs not to work. It won't bother any other ac lights or motors. It will kill GFI's
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02-07-2018, 10:18 PM
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#15
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Junior Member
Join Date: Feb 2018
Posts: 5
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Quote:
Originally Posted by Bluepill
In order to narrow it down to the main 12 volt supply, or just a branch circuit: If you have a water pump, does it work or not?
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I’ll try that. Just have to put some water in the tank
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02-07-2018, 10:22 PM
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#16
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,502
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Quote:
Originally Posted by Sallyann
I’ll try that. Just have to put some water in the tank
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For this test, the pump doesn't need to move water; it just needs to run. If you can hear it, it's running.
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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02-07-2018, 10:30 PM
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#17
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Site Team
Join Date: Oct 2014
Posts: 15,266
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Quote:
Originally Posted by cavie
Check your pedestal. Reverse polarity will cause LEDs not to work. It won't bother any other ac lights or motors. It will kill GFI's
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Reverse polarity noted by the surge protector has nothing to do with the 12V LEDS. Two totally separate systems. If the only lights that do not operate are those in the slide, check the wire harness under the slide, occasionally some of the wires can get caught when opening and closing and break a wire. You might be able to see this by looking under the slide unless the bottom of the slide is enclosed.
__________________
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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02-07-2018, 10:44 PM
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#18
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Senior Member
Join Date: Apr 2016
Location: Port Charlotte Fl/Hinsdale Ma
Posts: 4,823
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Quote:
Originally Posted by Flybob
Reverse polarity noted by the surge protector has nothing to do with the 12V LEDS. Two totally separate systems. If the only lights that do not operate are those in the slide, check the wire harness under the slide, occasionally some of the wires can get caught when opening and closing and break a wire. You might be able to see this by looking under the slide unless the bottom of the slide is enclosed.
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His surge protector is doing its job. It says "Reverse polarity". That means the pedestal is not wired correctly and he/she should not plug into it. Led lights will not work with reverse polarity. If the trailer is plugged into a faulty shore power that is why the LEDs won't light. Read my signature below this post. If he/she try's to use the GFI circuit it is gonna trip.
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02-07-2018, 11:27 PM
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#19
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Senior Member
Join Date: Dec 2017
Posts: 954
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Just to clarify, the reverse polarity at the pedestal affects the AC power subsystem. It is separated from the DC power subsystem by the converter. The LEDs operate on the 12v DC subsystem.
True, the LEDs will not operate w/reverse polarity- but it is DC reverse polarity that affects them.
AC reverse polarity does not cause DC reverse polarity.
__________________
2016 RAM 3500 DRW 4x4 LB LoneStar, w/RDS 33Gal Aux tank, Timbrens, Andersen Ultimate2, SwiftHitch SH04
2018 Chaparral 360IBL w/TST507 TPMS, Lippert GC3 Autolevel, Furrion Backup Cam, Progressive HW50C
2006 RAM 3500 DRW LoneStar Edition
2011 Starcraft 392BHUw/Andersen No-Sway
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02-08-2018, 12:58 AM
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#20
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Senior Member
Join Date: Jun 2015
Location: Pensacola, FL
Posts: 1,645
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Quote:
Originally Posted by bjlakatos
Just to clarify, the reverse polarity at the pedestal affects the AC power subsystem. It is separated from the DC power subsystem by the converter. The LEDs operate on the 12v DC subsystem.
True, the LEDs will not operate w/reverse polarity- but it is DC reverse polarity that affects them.
AC reverse polarity does not cause DC reverse polarity.
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Correct. "Reverse Polarity" on a 120 volt surge protector is actually a misnomer. AC has constantly switching (Alternating) polarity. The surge protector is indicating reversed "HOT" and "NEUTRAL" line of the shore power supply. It can indeed be a danger, and should be reported to the campground.
More info here:
http://www.boatus.com/boattech/casey...e-Polarity.asp
__________________
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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