Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-25-2020, 08:26 PM   #1
3 Rivet Member
 
2019 25' Flying Cloud
Pala , California
Join Date: Jun 2020
Posts: 180
LED Dimmer Weirdness

Hi,

2019 FC 25FBQ.

The main interior LED ceiling lights have been acting up. Often not going on right away or flickering. Sometimes if I slide the dimmer rapidly I can get to come on 100% but they seem to live at ~75% of max illumination. It's getting worse.

Oddly I found that if I turn on the outside awning LED strip the interiors hop up to 100%! Earlier when I turned off the exterior the interior flickered and lowered down to ~75%. Holding this time though!

It's all the ceiling lights not a select few.


What the heck? Just a bad dimmer switch? I took it out of the cabinet and cant's see where the pigtails splice in... do they go all the way to the panel?

I figure I'll swap the interior dimmer with exterior dimmer to start. Are they 12v? Should I unplug shore power? Normally I would but if low voltage...I was a finish carpenter and learned to work with hot wires....you can't run to the breaker every time right!


Any advice?
TravisH is offline   Reply With Quote
Old 08-28-2020, 06:10 AM   #2
Rivet Master
 
2018 25' International
Slidell , Louisiana
Join Date: Sep 2017
Posts: 3,477
All the lights in the trailer are designed for 12V and are powered through the 12V portion of the distribution center. LED's are low voltage low current devices so they generally daisy chain 3 @ 4V each to make 12V If you look closely at each light you will notice the LEDs are in groups of 3. LEDs are also unidirectional and pass current in one direction. So, what happens is they are sensitive to poor connections and behave the way you describe when poor connections exist. the poor connection may be the dimmer but it may be somewhere else, which seems likely given the flickering indicating usually a poor negative/ground as that will create enough current to cause lights sharing the negative lead to light for a very short time.

All this to say it may be the dimmer, but it may not be. I would swap the leads on the dimmers you have temporarily to confirm the dimmer before ordering a new one. I would also consider cleaning the variable resistor with electric contact cleaner if it is a mechanical type. If it is solid state you're out of luck on that. I have not taken one out to see. If you eliminate the dimmer as the issue you will have to inspect and redo the wire connectors.
__________________
Brian
BayouBiker is offline   Reply With Quote
Old 08-30-2020, 09:34 AM   #3
3 Rivet Member
 
2019 25' Flying Cloud
Pala , California
Join Date: Jun 2020
Posts: 180
Quote:
Originally Posted by BayouBiker View Post
All the lights in the trailer are designed for 12V and are powered through the 12V portion of the distribution center. LED's are low voltage low current devices so they generally daisy chain 3 @ 4V each to make 12V If you look closely at each light you will notice the LEDs are in groups of 3. LEDs are also unidirectional and pass current in one direction. So, what happens is they are sensitive to poor connections and behave the way you describe when poor connections exist. the poor connection may be the dimmer but it may be somewhere else, which seems likely given the flickering indicating usually a poor negative/ground as that will create enough current to cause lights sharing the negative lead to light for a very short time.

All this to say it may be the dimmer, but it may not be. I would swap the leads on the dimmers you have temporarily to confirm the dimmer before ordering a new one. I would also consider cleaning the variable resistor with electric contact cleaner if it is a mechanical type. If it is solid state you're out of luck on that. I have not taken one out to see. If you eliminate the dimmer as the issue you will have to inspect and redo the wire connectors.
Thanks!

I finally just swapped out the outside awning dimmer with the problematic ceiling dimmer and problem solved. The outside is not working now so the the dimmer probably had a bad wire that finally broke loose from the board during the swap.

So I'll order up a new switch.

Thanks for the LED lecture...I knew nothing about these lights!

Trav
TravisH is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
LED Puck Light wiring weirdness StagrLee Lights - Interior & Exterior 11 08-20-2016 09:23 AM
LED Dimmer Failure? Hoonanea Lights - Interior & Exterior 25 09-02-2014 10:46 AM
2011 LED dimmer upgrade? Getahobby Lights - Interior & Exterior 0 10-25-2012 08:21 AM
Dimmer for LED goshawks00 Lights - Interior & Exterior 4 02-23-2012 12:57 PM
LED Dimmer Over59 Electrical - Systems, Generators, Batteries & Solar 4 02-13-2005 06:57 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 12:12 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.