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Topic: My front roof box is always on? (Read 1087 times) previous topic - next topic

Re: My front roof box is always on?

Reply #25 –
IMMEDIATELY, go back and turn off the breaker (main 120 VAC breaker box) for that A/C.

Then, troubleshoot at your leisure.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: My front roof box is always on?

Reply #26 –
It is User error on aftermarket roof box maybe
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #27 –
Thanks wolfe..  I would have exploded by now
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #28 –
Assume you have shore power in campground. (30 amp?) Go to big box store and buy two small ceramic heaters with thermostat. Will keep coach warm You will need furnaces running when we get closer to freeing temps
Tim Fiedler    2025 LTV Unity MBL on Order
2000 Chevy Tracker 2 Door Convertible 4WD Now lifted 4.5"
1985 Citroen 2CV6 Charleston
Murphy Rebel on wheels with 175HP Titan
Cessna P337
1980 48' Westport MY (!/4 Share)

Re: My front roof box is always on?

Reply #29 –
I have an appt with the shop. I have ceramic space heaters for the bays... But the other night I dug everything out. Because I turned the roof box to red instead of blue and drained the house batteries in no time.

I didn't know it was on. Gotta turn the main switch from off to on Right? Nope!
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #30 –
It took a day for me to figure out what happened. Now I know what, when, and how.... Thanks largely to texts, emails, phone call, and this thread
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #31 –
It's a steep learning curve... even the terminology is new.
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #32 –
Paully Your Coach I think should have a A/C in the front .It will come through the roof and a A/C in the bedroom that will come through the roof also. There should be a control panel on each one. 2 knobs one that turns on fan to cool or fan or fan heat. the other to set temp. These units are 120volt and should only operate when plugged into shore power or with the generator running.
You should also have a gas furnace in the front and one in the bedroom. There should be a t stat usually mounted under or on a cabinet that controls this . The furnaces operate on 12 volts and should start and cycle as needed to keep set temp in coach.
The Kool a Matic fan is 12 volts and has a t stat on the wall near it. It is just a large exhaust fan, It has 2 speeds low and high. there is a temp control that you can set for it to turn on ,All it is is a exhaust fan nothing more. It is completely separate from the other systems.
So are your furnaces turning on and heating?
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: My front roof box is always on?

Reply #33 –
What is a "roof box"?
Is it a :
Roof mounted AC ?
Kitchen exhaust fan?
Something else a PO could have installed?
Justin & Cathy Byrd
1995 U280 "Old Faithful"
36' Build #4673
C8.3 Cummins
Allison MD3060R 6 speed - retarder
Powertech 10KW  4cyl Kubota

Re: My front roof box is always on?

Reply #34 –
And, if the roof A/C drained the batteries (actually, if it would run with no generator or shore power-- meaning the inverter is powering it), then a previous owner MAY, repeat MAY have done a "whole house install" for an added inverter.  This really needs to be verified and if so, either modified to a sub-panel, or all those who will use the coach need to be aware of this "easy to screw up" wiring.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: My front roof box is always on?

Reply #35 –
Thanks stump! And yes, I meant the forward roof ac. I am doing a poor job describing things. Thanks for your patience... 

I read the manuals before moving in. There is a lot going on in my U300... and many of the foretravel basics haven't sunk in yet. I am reading as fast as I can remember... still slow.
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #36 –
There are a lot of numbers that I'm not familiar with, however they are part of rv jargon... I am a forester. Long way off from electrician or mechanic.
Paul
'92 U300 SBID 40'  #3968 "Large Marge"
Detroit Diesel 6v92TA & Allison HT746
'09 Mini Clubman w/ manual 6spd @ 39 mpg

Re: My front roof box is always on?

Reply #37 –
Paully,when you get spare time start at the beginning of the tech posts and just read all of them,even if they don't pertain to your
coach you will become familiar with the jargon,also go to the Beamalarm site and read up on your coach.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: My front roof box is always on?

Reply #38 –
Paully PM me your phone number and a good time to call you I'd be more than happy to talk/walk you through the systems so you have  a better understanding whats going on.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: My front roof box is always on?

Reply #39 –
Quote from: stump –
Paully PM me your phone number and a good time to call you I'd be more than happy to talk/walk you through the systems so you have  a better understanding whats going on.
Stump,

That is what he needs, good call.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean
 

Re: My front roof box is always on?

Reply #40 –
I spoke with Paul yesterday. I explained the different systems. A/C, Furnaces, Refrigerator.etc.
He is only seeing 10.6 bolts at batteries. He is plugged into a extension cord 120v. I told him to unplug converter charger and make sure he has 120v there at plug. He has another 10 amp charger and I told him to disconnect batteries and charge each one separately. He may have a bad cell causing low charge,or maybe a faulty charger converter. But for started he is going to charge batteries first. We will see what he finds when he does the test.
I do not think he has any problems with the roof AC and heat strip after our talk.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit