Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 

Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > MOC Technical Forums > Repairs & Service
Click Here to Login

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-05-2019, 05:25 AM   #1
Dave W
Montana Master
 
Dave W's Avatar
 
Join Date: Jul 2014
Location: Upstate NY
Posts: 1,788
M.O.C. #14547
12V Electrical Gremln

Tripping in Maine!!


Problem, no 12V lights when not hooked up to a power pedestal and worse, no fridge on propane


- slides work on battery power

- front legs and rear stabilizers work on battery power



Hook up to the pedestal - 12V lights now work.


I haven't had enough free time yet to do more the check fuses, but kinda am looking for a direction before digging in. First guess is the WYCO converter (don't have an inverter) since it has already been replaced after a complete failure.


Any hints, folks?
 
__________________
Dave W
2014 Montana High Country 343RL (Sold!)
2011 Ford 6.7 Lariat CCLB (Went to PU Heaven)
2019 F150SC XLT SE Sport,w/full tow package
Dave W is offline   Reply With Quote
Old 09-05-2019, 07:19 AM   #2
BB_TX
Montana Master
 
Join Date: Oct 2006
Location: McKinney
Posts: 7,133
M.O.C. #6433
Any chance your battery disconnect switch has been turned to disconnect the battery? My front jacks are wired direct to the battery, independent of the disconnect switch.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
BB_TX is offline   Reply With Quote
Old 09-05-2019, 10:31 AM   #3
jcurtis934
Montana Master
 
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
No 12vdc, no fridge since the control board needs 12vdc. I would think the battery switch as well. Hooking up to shore power and then having 12vdc lights work says converter is supplying power to your lights instead of the battery.
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
jcurtis934 is offline   Reply With Quote
Old 09-05-2019, 10:35 AM   #4
jcurtis934
Montana Master
 
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
Or maybe the cheap resettable breaker on the wall, the one not supplying 12vdc to the hydraulic pump, is stuck open and not feeding dc power to the monte? This is a wild guess not knowing how they wired your trailer.
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
jcurtis934 is offline   Reply With Quote
Old 09-05-2019, 11:34 AM   #5
BuilderBob
Montana Master
 
BuilderBob's Avatar
 
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
Check your battery disconnect switch or the auto reset breaker by the battery.
__________________
Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
Happy Trails
BuilderBob is offline   Reply With Quote
Old 09-05-2019, 04:51 PM   #6
Dave W
Montana Master
 
Dave W's Avatar
 
Join Date: Jul 2014
Location: Upstate NY
Posts: 1,788
M.O.C. #14547
EUREKA!!!


Battery disconnect switch was off. Switched it to on, every thing works fine now. No clue why it was off but I probably did it and is a case of CRS brought on after a senior moment.


Thanks all for the good advice again.



PS: As far as a resetable breaker - not sure that our 2014 vintage MHC has one with no hydraulic pump.
__________________
Dave W
2014 Montana High Country 343RL (Sold!)
2011 Ford 6.7 Lariat CCLB (Went to PU Heaven)
2019 F150SC XLT SE Sport,w/full tow package
Dave W is offline   Reply With Quote
Old 09-05-2019, 06:54 PM   #7
PeteandJoan
Montana Fan
 
Join Date: Oct 2015
Location: Round Rock
Posts: 475
M.O.C. #17905
Had trouble with battery disconnect in convenience center....it would jiggle itself over to the "off" position. I finally used a small bungee cord to hold it in the "on " position. No more problems since...knock on wood!
__________________
Pete & Joan & "Honey" fur-baby.
2015 Montana 3611RL 2012 F350 6.7 DRW Lariat
Disc Brakes & Sailun 14 ply S637
6-pt Hydraulic leveling
PeteandJoan is offline   Reply With Quote
Old 09-05-2019, 07:29 PM   #8
BB_TX
Montana Master
 
Join Date: Oct 2006
Location: McKinney
Posts: 7,133
M.O.C. #6433
Quote:
Originally Posted by Dave W View Post
.........
PS: As far as a resetable breaker - not sure that our 2014 vintage MHC has one with no hydraulic pump.
Mine has one for the pump and one for everything else. With no pump I would guess you have one somewhere. But I can’t remember anyone ever having a problem with that “other” one.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
BB_TX is offline   Reply With Quote
Old 09-06-2019, 05:15 AM   #9
Dave W
Montana Master
 
Dave W's Avatar
 
Join Date: Jul 2014
Location: Upstate NY
Posts: 1,788
M.O.C. #14547
I may just do a 'delete' on that so called disconnect. About all it does is shut down the 12VDC lights, fridge and probably the HW heater and furnace on gas while not plugged in 120VAC. I have a good shut off I need to install for the battery that makes more sense. That one will cut all 12VDC power.


I'll do a search for a resetable breaker tho all I've seen are a couple connector posts then wiring off to the distribution center. But with that said, really havn't looked specifically for that breaker
__________________
Dave W
2014 Montana High Country 343RL (Sold!)
2011 Ford 6.7 Lariat CCLB (Went to PU Heaven)
2019 F150SC XLT SE Sport,w/full tow package
Dave W is offline   Reply With Quote
Old 09-06-2019, 09:51 PM   #10
rohrmann
Montana Master
 
rohrmann's Avatar
 
Join Date: Oct 2012
Location: Box Elder
Posts: 4,676
M.O.C. #12947
Quote:
Originally Posted by Dave W View Post
I may just do a 'delete' on that so called disconnect. About all it does is shut down the 12VDC lights, fridge and probably the HW heater and furnace on gas while not plugged in 120VAC. I have a good shut off I need to install for the battery that makes more sense. That one will cut all 12VDC power.


I'll do a search for a resetable breaker tho all I've seen are a couple connector posts then wiring off to the distribution center. But with that said, really havn't looked specifically for that breaker

I'm thinking what you are seeing and calling connector posts is probably one of the 12 volt breakers. From the battery(ies), there still should be a breaker going to the main panel in the rig. This is a photo of one of the breakers I'm thinking you are seeing. On these rigs that have hydraulic, the second breaker will be in the position of the larger black breaker, which you say doesn't exist on your rig, but you should have one like what is shown with the red insulating cover in the photo. If that fails, that could cause a lack of 12 volts going from the battery to the panel and also backwards for the battery to get charged from the converter at the main panel
Attached Thumbnails
Click image for larger version

Name:	80 amp pump breaker.jpg
Views:	35
Size:	63.6 KB
ID:	4617  
Attached Images
 
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
rohrmann is offline   Reply With Quote
Old 09-07-2019, 05:01 AM   #11
Dave W
Montana Master
 
Dave W's Avatar
 
Join Date: Jul 2014
Location: Upstate NY
Posts: 1,788
M.O.C. #14547
Bob - Thanks. Yes I do have a red boot covered plastic body connector with 2 posts on it. If it's a breaker, sure isn't like one I've ever seen before. I'll take a better look when we get home from rainy Maine (Dorian's breezy effect), I'm used to seeing what you show in the second photo in 12VDC operations though and have a couple in my '31Ford's much modified street rod electrical system.



If this MHC doesent hve a safety device breaker, may just add one since fuses wouls eveidently handle 12VDC overallbattery safety


PS = any idea what the amperage is if ours would have one - i.e. 50amp?
__________________
Dave W
2014 Montana High Country 343RL (Sold!)
2011 Ford 6.7 Lariat CCLB (Went to PU Heaven)
2019 F150SC XLT SE Sport,w/full tow package
Dave W is offline   Reply With Quote
Old 09-07-2019, 08:09 AM   #12
BB_TX
Montana Master
 
Join Date: Oct 2006
Location: McKinney
Posts: 7,133
M.O.C. #6433
Dave - It is called an auto reset circuit breaker. Sounds impressive, but is actually a cheap piece of bimetal with electrical contacts on the end. Heats up, bends, and opens the circuit. Cools, bends back, and remakes the circuit. I think it is a poor application for a circuit that is continuously energized as it could trip/reset/trip/reset/trip/reset as long as a load was on it.

It should have the amp rating stamped on the side.

Here is a picture of one from my hydraulic pump circuit that kept tripping.
Attached Thumbnails
Click image for larger version

Name:	100_1118.jpg
Views:	38
Size:	92.2 KB
ID:	4621  
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
BB_TX is offline   Reply With Quote
Old 09-11-2019, 03:39 PM   #13
paulinbaja
Montana Fan
 
Join Date: Feb 2014
Location: Chico
Posts: 269
M.O.C. #14041
There are several fuses that can contribute to this issue. Just off the bbatteries are two fuses and on the converter there are two fuses and in the fuse panel there is a main fuse.
paulinbaja is offline   Reply With Quote
Reply

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
Forum Jump

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 07:00 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.