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

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 11-04-2020, 12:38 PM   #1
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Kentucky
Posts: 789
THOR #2817
27K Engine alternator not charging coach batteries

I have a Windsport 27K. The coach batteries no longer charge when the engine is running. I imagine that there is an isolating device that is faulty, but I don't know what it looks like or where it's located.

__________________
Metalman is offline   Reply With Quote
Old 11-04-2020, 01:00 PM   #2
Site Team
 
EA37TS's Avatar
 
Brand: Entegra
Model: Accolade 37TS
State: South Carolina
Posts: 6,418
THOR #1469
If you do a forum search on BIRD, BIM and Trombetta you will quite a bit of info on this very topic.

You can start by looking at the post in these search results links.

https://www.thorforums.com/forums/se...archid=3467913

https://www.thorforums.com/forums/se...archid=3467915

https://www.thorforums.com/forums/se...archid=3467919

BIRD = Battery Isolation Relay Delayed
BIM = Battery Isolation Module
Trombetta = manufacturer of the relay most commonly used
__________________
Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
EA37TS is offline   Reply With Quote
Old 11-04-2020, 02:42 PM   #3
Senior Member
 
OldWEB's Avatar
 
Brand: Thor Motor Coach
Model: FW Hurricane 33T
State: England
Posts: 747
THOR #16471
Quote:
Originally Posted by EA37TS View Post
If you do a forum search on BIRD, BIM and Trombetta you will quite a bit of info on this very topic.

You can start by looking at the post in these search results links.

https://www.thorforums.com/forums/se...archid=3467913

https://www.thorforums.com/forums/se...archid=3467915

https://www.thorforums.com/forums/se...archid=3467919

BIRD = Battery Isolation Relay Delayed
BIM = Battery Isolation Module
Trombetta = manufacturer of the relay most commonly used
NONE of the links worked for ME.
__________________
OldWEB is online now   Reply With Quote
Old 11-04-2020, 02:50 PM   #4
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 7,452
THOR #7035
Quote:
Originally Posted by Metalman View Post
I have a Windsport 27K. The coach batteries no longer charge when the engine is running. I imagine that there is an isolating device that is faulty, but I don't know what it looks like or where it's located.
Your 27K should be just like my 27.1

You have a Trombetta relay controlled by the BIRD circuit. The Trombetta relay is in the battery compartment towards the inside mounted on a bracket up high. It looks like this:

The main contacts are probably burnt open.

Trombetta is a brand name, you need a continuous duty low current relay to replace it if found bad. This is what I replaced mine with over a year ago:

https://www.amazon.com/gp/product/B072MZHK48/
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 11-04-2020, 05:42 PM   #5
Senior Member
 
OldWEB's Avatar
 
Brand: Thor Motor Coach
Model: FW Hurricane 33T
State: England
Posts: 747
THOR #16471
More reading if you are interested.
https://www.thorforums.com/forums/f8...ing-16672.html
__________________
OldWEB is online now   Reply With Quote
Old 11-04-2020, 06:03 PM   #6
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Kentucky
Posts: 789
THOR #2817
Quote:
Originally Posted by OldWEB View Post
More reading if you are interested.
https://www.thorforums.com/forums/f8...ing-16672.html
Thanks for the link to the thread. Excellent information, including schematics and a chart.
__________________
Metalman is offline   Reply With Quote
Old 11-04-2020, 07:11 PM   #7
Member
 
Brand: Thor Motor Coach
Model: Hurricane 32N
State: Tennessee
Posts: 95
THOR #18316
Here's a thread you might be interested in. I suggest an upgraded relay since these fail so often.

https://www.thorforums.com/forums/f8...ion-21620.html
__________________
reminckv is offline   Reply With Quote
Old 11-04-2020, 09:34 PM   #8
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Ohio
Posts: 225
THOR #989
Quote:
Originally Posted by OldWEB View Post
More reading if you are interested.
https://www.thorforums.com/forums/f8...ing-16672.html

Thanks for the Information!
__________________
John & Diane is offline   Reply With Quote
Old 11-04-2020, 09:59 PM   #9
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Kentucky
Posts: 789
THOR #2817
Quote:
Originally Posted by reminckv View Post
Here's a thread you might be interested in. I suggest an upgraded relay since these fail so often.

https://www.thorforums.com/forums/f8...ion-21620.html
Thanks for the information. I just order one on eBay. I will relocate the solenoid from behind the batteries on the floor of the compartment where it can't be seen, to the wall, where I will have good access to it. What is wrong with Thor, lazy or stupid?
__________________
Metalman is offline   Reply With Quote
Old 11-05-2020, 01:14 AM   #10
Member
 
Brand: Thor Motor Coach
Model: Hurricane 32N
State: Tennessee
Posts: 95
THOR #18316
Quote:
Originally Posted by Metalman View Post
Thanks for the information. I just order one on eBay. I will relocate the solenoid from behind the batteries on the floor of the compartment where it can't be seen, to the wall, where I will have good access to it. What is wrong with Thor, lazy or stupid?
You’re welcome. I relocated mine too. I think they like to play “hide and seek”.
__________________
reminckv is offline   Reply With Quote
Old 11-16-2020, 01:20 PM   #11
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Kentucky
Posts: 789
THOR #2817
Thanks to everyone who responded to my post. I made a bracket to mount the new isolator (White Rogers 15V, 200-600 Amp.). It is now located where it can be seen, metered, and replaced without removing the batteries.
__________________
Metalman is offline   Reply With Quote
Old 11-18-2020, 04:53 PM   #12
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Kentucky
Posts: 789
THOR #2817
I dissembled the faulty Trombetta relay and it appears that moisture caused corrosion on the contacts, resulting in a high resistance situation. I can understand how moisture could get into unit, since it was mounted on the bottom of the battery compartment not far from various openings that could allow water to enter when driving through heavy rain. The coil was still intact and operating, but there was no continuity between the two heavy terminals.
__________________
Metalman is offline   Reply With Quote
Old 11-18-2020, 08:02 PM   #13
Senior Member
 
OldWEB's Avatar
 
Brand: Thor Motor Coach
Model: FW Hurricane 33T
State: England
Posts: 747
THOR #16471
WOW! That is corroded.

I do love it when people dissect the problem to the root, hopefully getting the proper answer. As weatherproof as it looks, you can never be certain.
Hopefully you cleaned this one up, reseal it (properly) and keep it for an emergency spare... it actually looks in fine shape otherwise.
__________________
OldWEB is online now   Reply With Quote
Old 12-28-2020, 12:23 AM   #14
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Ohio
Posts: 225
THOR #989
Where did you find your relay to be located? I looked in the battery compartment but don't see it. Do I have to remove the batteries to get to it? Of course the mh is covered and there is 6" of snow on the ground, LOL.
__________________
John & Diane is offline   Reply With Quote
Old 12-28-2020, 12:50 AM   #15
Member
 
Brand: Thor Motor Coach
Model: Hurricane 32N
State: Tennessee
Posts: 95
THOR #18316
I'm sure it depends on model but mine was hidden behind the batteries. I'd try a small mirror and flashlight. I was able to get meter leads to mine for testing but it was difficult.
__________________
reminckv is offline   Reply With Quote
Old 12-28-2020, 01:00 AM   #16
Member
 
Brand: Thor Motor Coach
Model: Hurricane 32N
State: Tennessee
Posts: 95
THOR #18316
I'm sure it depends on model but mine was hidden behind the batteries. I'd try a small mirror and flashlight. I was able to get meter leads to mine for testing but it was difficult. I could also see mine by crawling under the battery tray and looking through the openings.
You may also see the BIRD module back there.
__________________
reminckv is offline   Reply With Quote
Old 12-30-2020, 12:43 AM   #17
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Ohio
Posts: 225
THOR #989
After not finding anything behind the batteries I called Thor. After a little research I was informed I don't have a Trombetta as the Battery Control Center handles those functions and it is located in the engine compartment on the drivers side. (up in the corner). The Thor tech asked if my interior lights were working with the shore power off. I hadn't checked but he said if I didn't the first thing I should check was the wiring in the Battery compartment since the house batteries only showed 12.1 volts with my meter. I mentioned to him I noticed the stud on the frame for the ground connections looked very rusty. Sure enough, no shore power, no lights! cleaned up the ground connections and the lights came on. When I restored the shore power the converter started charging all the batteries again. Hopefully that was the only issue.
__________________
John & Diane is offline   Reply With Quote
Old 12-30-2020, 01:46 PM   #18
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Kentucky
Posts: 789
THOR #2817
Thanks for the detailed report. It's very strange that your 2015 Windsport 27K has a different means of isolating the two battery systems.
__________________
Metalman is offline   Reply With Quote
Old 12-30-2020, 06:47 PM   #19
Member
 
Brand: Thor Motor Coach
Model: Hurricane 32N
State: Tennessee
Posts: 95
THOR #18316
That surprises me too, but my experience with different models is limited. I thought the 2015 vintage had BIRDs. Thanks for the follow up. I learned something from it and that's good.
__________________
reminckv is offline   Reply With Quote
Old 12-30-2020, 11:59 PM   #20
Senior Member
 
Brand: Thor Motor Coach
Model: Windsport 27K
State: Ohio
Posts: 225
THOR #989
I'm thinking that since our mh was an early 2015 some of the components were left over 2014 items. We bought (unplanned purchase) the coach at the Cleveland RV Show in January 2014, Camping World agreed to hold the coach until the end of March for us so we could put in a concrete pad for it. Since we weren't in a hurry for it they asked if we mind waiting a few extra weeks and get one from the factory which we did. Our purchase was for a 2014 but when it arrived at the end of March it was titled as a 2015. In addition to the changes for 2015 it also had the the 15k AC and dual house batteries. I was told that Thor made the change over to the 2015 models much earlier than Camping World expected. Camping World honored the show price and "no charged" the batteries and AC.
__________________
John & Diane is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 02:23 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2