RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Tiffin Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 01-31-2016, 07:32 PM   #1
Member
 
Alibamafan's Avatar
 
Join Date: Nov 2015
Location: where we stop
Posts: 40
Unhappy Dead chassis batteries.

I am plugged in to shore power and have not started the engine in a couple weeks and both chassis batteries are dead. There is not enough power to start the gen. Any suggestions as to the possible problem would be appreciated.
__________________

Alibamafan is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-31-2016, 09:00 PM   #2
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 18,176
More info on your coach will help members and other Tiffin owners tell you if your coach is set up to charge the chassis batteries when plugged in.
If you could post year and model you'll get more help.

Also some items in your coach are probably powered from the chassis batteries and speed up them going dead. Dash radio and power seats come to mind.
Other than those the engine and trans control modules are always drawing power and can draw it down in 3 weeks.
__________________

__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 01-31-2016, 09:21 PM   #3
Member
 
Thor Owners Club
Freightliner Owners Club
Join Date: Jan 2011
Posts: 39
It could be a bad BIRD (bidirectional relay delay)or your battery isolation relay. Also some coaches have a BIM (battery isolation manager) instead of the two above.
__________________
Ted & Mary
2018 Fleetwood Discovery LXE 39F/Former 2015 Palazzo 36.1/Former 2006 Winnebago Journey
2006 Honda CRV
ravansnest is offline   Reply With Quote
Old 01-31-2016, 09:43 PM   #4
Senior Member
 
Join Date: Sep 2012
Posts: 8,055
Put a charger on it asap to get the batteries run up so they will work. Then figure out if your unit has a maintainer that is not working or no maintainer.
nothermark is offline   Reply With Quote
Old 02-01-2016, 07:38 AM   #5
Senior Member
 
Tiffin Owners Club
Winnebago Owners Club
Join Date: Feb 2012
Location: Las Cruces, NM
Posts: 3,544
You do need to post your year and model information. You have two battery banks - house batteries which just about everything runs off of except the main engine and,
- chassis batteries which start the main engine and provide power for a few small items like the dash radio

The generator starts from the house batteries. These batteries are charged from the inverter/charger when you are on shore power or the generator when it is running. They are also charged from the main engine alternator when it is running. If the charger section of the inverter has been turned off or you are not plugged into shore power, these batteries will run down pretty quick because of multiple parasitic type loads. If you are going to sit a few days without power, you need to turn off the inverter and turn off the battery bank with the disconnect switch.

The chassis batteries are kept in a top charge state by a trickle charger. This is mounted in the last bay on the passenger side. You need to check to make sure that this is plugged in and operating when the coach is plugged into shore power. The units installed on older units actually discharged the battery when not on shore power. If you are going to let the coach sit a few days, you will want to unplug this unit and turn off the battery bank.

If you managed to discharge the battery banks below about 11.8V then you have most likely damaged your batteries. They won't hold a charge for as long as they previously did and will get progressively worse over time.

If you can't sort this out with the tips you are getting here, you might want to try TRVN - Tiffin RV Network site which is more Tiffin specific.
__________________
Roger & Mary
2017 Winnebago Navion 24V
2014 Tiffin Phaeton 36GH (Sold)
luvlabs is offline   Reply With Quote
Old 02-01-2016, 03:44 PM   #6
Senior Member
 
wa8yxm's Avatar
 
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
Ok for this post motor homes come in TWO flavors.. ONE, Mine for example, have a Bi-Directional isolater Device (BIRD is one company's model) this allows the engine to charge the house and the house to charge the engine.

Many motor homes have one of these.. Many have the older ONE WAY isolator, Engine charges house, NO joy on the house charging engine.

First: Verify HOUSE charger is working (Voltmeter)
Then find out from manufacturer if you are supposed to have a BIRD or a one way.. if one way install Trick-l-start or echo-charge, if BIRD get it fixed.
__________________
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 02-01-2016, 09:48 PM   #7
Member
 
Alibamafan's Avatar
 
Join Date: Nov 2015
Location: where we stop
Posts: 40
I have a 2008 Phaeton and there is a maintainer on drivers side in the compartment where the shore line is located. I am fully charging both chassis batteries at this time. The house batteries are at full charge so I will assume that the maintainer is not working until I can check it. The gen starts off the chassis battery.
Alibamafan is offline   Reply With Quote
Old 02-01-2016, 10:18 PM   #8
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 14,357
Boost switch does not help?

Could be one or both batteries are bad. How old are they?
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is offline   Reply With Quote
Old 02-02-2016, 08:06 AM   #9
Senior Member
 
Tiffin Owners Club
Winnebago Owners Club
Join Date: Feb 2012
Location: Las Cruces, NM
Posts: 3,544
You should have at least 4 house batteries and 2 chassis batteries. Chassis batteries are group 31s which are really big batteries. The house batteries are basically golf cart batteries.

The trickle charger will not recharge the chassis batteries. If these are the original batteries to the coach, then it is time to replace them anyway. If your house batteries were charged, then you could have started your generator. Jamming the boost switch closed for 30 minutes or so should have given the chassis batteries enough charge to start the engine.

Got a volt meter? Disconnect the coach from power and let it sit for 24 hours. Then check your battery voltages. Your batteries, if fully charged, should be 12.8 volts for the chassis batteries, 6.4 volts for the house batteries.
__________________
Roger & Mary
2017 Winnebago Navion 24V
2014 Tiffin Phaeton 36GH (Sold)
luvlabs is offline   Reply With Quote
Old 02-02-2016, 08:42 AM   #10
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 8,777
Quote:
Originally Posted by Alibamafan View Post
I am plugged in to shore power and have not started the engine in a couple weeks and both chassis batteries are dead. There is not enough power to start the gen. Any suggestions as to the possible problem would be appreciated.
Alibamafan
On many coaches the chassis batteries, (aka: starting batteries), are only charged when the engine is running.

If that's the case on your coach and you use accessories that draw their power from the chassis batteries while the coach is parked the charge in your chassis batteries can/will be depleted, (sometimes to the point that the engine will not crank).

If your coach is wired so that the chassis batteries are used to start the generator and you deplete the charge in the chassis batteries while parked the generator will not start either.... unless you use the "aux start switch", (aka: "battery boost switch")... or charge the batteries with a battery charger.

Mel
'96 Safari
mel s is offline   Reply With Quote
Old 02-02-2016, 10:24 AM   #11
Senior Member
 
allegro1x's Avatar
 
Join Date: Feb 2014
Location: Georgia
Posts: 994
Could it be that the 8 yr old batteries just need replacing? Dave
__________________
Tiffin 32CA 2012
2007 Jeep Liberty
Sophie- old chihuahua girl+Ruby and Raisin- young shih tzu/ part poodle sisters
allegro1x is offline   Reply With Quote
Old 02-02-2016, 07:24 PM   #12
Member
 
Alibamafan's Avatar
 
Join Date: Nov 2015
Location: where we stop
Posts: 40
-I have checked and all batteries are good they are 2 years old. The trickle charger has stopped working and will be replaced. But my remaining question is: How long can I hold the boost switch down without burning up something?
Alibamafan is offline   Reply With Quote
Old 02-02-2016, 07:43 PM   #13
Senior Member
 
mfire1339's Avatar


 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Jun 2008
Location: Glendora Ca.
Posts: 1,440
As long as necessary with no problem.



Mike
__________________
2004 Monaco Monarch
Blueox, SMI, 1990 Wrangler YJ
mfire1339 is offline   Reply With Quote
Old 02-03-2016, 05:42 AM   #14
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 8,777
Quote:
Originally Posted by mfire1339 View Post
As long as necessary with no problem.
Mike
Or until the boost solenoid burns out.
__________________

mel s is offline   Reply With Quote
Reply

Tags
batteries, chassis



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
Batteries going dead even when on shore power macnanday Country Coach Owners Forum 17 05-30-2016 03:40 AM
All 3 Batteries Dead TJ311 Winnebago Industries Owner's Forum 30 08-05-2015 09:34 PM
Thor Four Winds dead chassis battery advice Jawz1968 MH-General Discussions & Problems 7 06-03-2015 05:09 PM
Chassis Batteries - What brand did you use? CruisinCondo Monaco Owner's Forum 2 05-25-2015 10:34 PM
Chassis batteries not being charged D Lindy Technology: Internet, TV, Satellite, Cell Phones, etc. 10 08-10-2014 02:08 PM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:00 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.