Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-12-2019, 05:54 AM   #1
1 Rivet Member
 
2019 19' Flying Cloud
Apex , North Carolina
Join Date: Oct 2018
Posts: 6
no power to Thermostat

Our less than 1 year old FC 19CB has a perplexing electrical problem. Yes it is under warrantee but we had reservations for the Smokies next week and have no ability to use heat.
We discovered the thermostat, the front fantastic fan and the TV booster do not have power. All else 12volt works, batteries good, fuses checked.
Any Ideas?
__________________

Bill n Rose is offline   Reply With Quote
Old 10-12-2019, 07:58 AM   #2
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 7,851
Quote:
Originally Posted by Bill n Rose View Post
Our less than 1 year old FC 19CB has a perplexing electrical problem. Yes it is under warrantee but we had reservations for the Smokies next week and have no ability to use heat.
We discovered the thermostat, the front fantastic fan and the TV booster do not have power. All else 12volt works, batteries good, fuses checked.
Any Ideas?
Hi

If the fuses are all good (as checked with the ohms function on your multimeter) and you have voltage at the fuse sockets (as checked with the multimeter), then you have a loose wire. It's either a loose power wire or a loose ground. It could be multiples.

To check this, measure both sides of the power at each device. Check it to a convenient location on the skin of the trailer. If you get nothing on both sides, it's an open power wire. If you get +12 on both sides (with the device turned on) then you have an open ground. (If you get +12 on one and zip on the other, either the device is turned off or all is well ....)

Once you know which wire you are after, you can chase them down by looking here and there. Since they run behind the walls, this usually is a "tug tug .... did it move?" sort of thing with a helper doing one end and you doing the other.

My guess would be an open ground, but that's only a guess.

Bob
__________________

uncle_bob is offline   Reply With Quote
Old 10-12-2019, 12:04 PM   #3
1 Rivet Member
 
2019 19' Flying Cloud
Apex , North Carolina
Join Date: Oct 2018
Posts: 6
no power to thermostat

Thank you so much for your reply.
My husband is up on the roof with the AC unit and wants to know where the AC ground wire is. There is a hot pink wire secured to the frame of the AC housing with a black end . It plugs in where it says outdoor temp sensor. We thought that was the ground before we saw were it was plugged in.

I should also tell you that he " fixed it " temporarily a couple days ago when he was up there randomly giggling wires. We thought he was a genius.

We will let you know if we make progress.
Bill n Rose is offline   Reply With Quote
Old 10-13-2019, 06:07 AM   #4
1 Rivet Member
 
2019 19' Flying Cloud
Apex , North Carolina
Join Date: Oct 2018
Posts: 6
Uncle Bob
We have checked found that the wire on the roof that my husband giggled to result in temp fix is the outdoor temperature sensor. He will climb up there later and get it to test it with the meter.
we will report back.
Thanks
Bill n Rose is offline   Reply With Quote
Old 10-13-2019, 08:20 AM   #5
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 3,661
With multiple items not working, there is probably no power or a bad ground connection on a circuit which is fed by one of the fuses. Check the connections at the fuse panel for tightness. Check the nuts on the connections to the fuses and find the ground buss bars in your power center and check the screws that hold the wires in. Beyond that it may be a connector between wire harnesses between the walls.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 10-13-2019, 09:29 AM   #6
Rivet Master
 
A W Warn's Avatar

 
2000 25' Safari
1999 34' Excella
Davidson County , North Carolina
Join Date: Aug 2006
Posts: 3,909
Quote:
Originally Posted by Bill n Rose View Post
Our less than 1 year old FC 19CB has a perplexing electrical problem. Yes it is under warrantee but we had reservations for the Smokies next week and have no ability to use heat.
We discovered the thermostat, the front fantastic fan and the TV booster do not have power. All else 12volt works, batteries good, fuses checked.
Any Ideas?
I suggest starting at the fuse panel and working outward on the circuit that is problematic. After confirming which circuit is the issue >
1. confirm fuse is good in that circuit
2. confirm the (+) wire is connected correctly to the fuse panel
3. go the first piece of equipment on the circuit and confirm that the (+) wires are connected properly
4. go to the second, third, fourth, etc... do the same.

Each piece of equipment is grounded directly to the trailer structure/skin. There is no common ground wire between them (at least that's the way it is on my trailers), so it is unlikely that all three items you mention have lost ground at the same time.

Good luck!!
__________________
Alan
2014 Silverado 1500 Crew Cab 5.3L maximum trailering package
A W Warn is offline   Reply With Quote
Old 10-13-2019, 09:44 AM   #7
Rivet Master
 
A W Warn's Avatar

 
2000 25' Safari
1999 34' Excella
Davidson County , North Carolina
Join Date: Aug 2006
Posts: 3,909
Quote:
Originally Posted by Bill n Rose View Post
Uncle Bob
We have checked found that the wire on the roof that my husband giggled to result in temp fix is the outdoor temperature sensor. He will climb up there later and get it to test it with the meter.
we will report back.
Thanks
You mentioned the thermostat, the front fantastic fan and the TV booster have lost power. Jiggling the wires on the roof would have no affect on these.

Both the 120v and the 12v power supplies to the roof top AC unit comes from beneath the AC unit. On my trailers I have to check these by removing the interior cover. There is a yellow Romex NM cable supplying 120v power, with black supply wire, white neutral wire, and bare copper ground. Not sure about your trailer, but on mine there is a black/red wire providing 12 volt (+) power.
__________________
Alan
2014 Silverado 1500 Crew Cab 5.3L maximum trailering package
A W Warn is offline   Reply With Quote
Old 10-13-2019, 09:56 AM   #8
1 Rivet Member
 
2019 19' Flying Cloud
Apex , North Carolina
Join Date: Oct 2018
Posts: 6
Unhappy no power to thermostat

Thanks to all who are trying to help! We will be rechecking the fuses and connections. We will recheck the buss connections. So far all has tested good except not getting 12 volt to thermostat, antenna booster and front fan which are all on the same circuit as the AC.
As noted before, jiggling the outdoor temp sensor in the AC gave us a fix for several days but after the trip home the Jiggling doesnt do anything to fix the recurrence.
At this point we are no longer Giggling over the problem
Bill n Rose is offline   Reply With Quote
Old 10-13-2019, 01:25 PM   #9
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 7,851
Hi

The wire you are giggling likely is moving another wire that's moving another wire .... Eventually it gets to the wire nut or broken wire or loose screw that is creating he problem. The only way to debug it is to follow through the circuit and figure out where the loose connection is. Since Airstreams are all a bit different, you will need to track things down as they apply to your specific trailer.

Bob
uncle_bob is offline   Reply With Quote
Old 10-13-2019, 10:15 PM   #10
"Space A" S/O Registry 11
 
2006 34' Classic S/O
Fort Worth , Texas
Join Date: Feb 2007
Posts: 937
I would tighten all electrical connections. It is amazing how many time several are missed and it is not just Airstream, but vender supplied components as well.
guskmg
__________________

guskmg 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
Penguin 2 & CCC2 Install- No Power to Thermostat emmadow Electrical - Systems, Generators, Batteries & Solar 1 07-15-2018 06:38 PM
No Power to rear Fantastic fan thermostat jimmymac Our Community 1 08-25-2017 08:46 PM
12V Power for AC Thermostat in 72 Sovereign goobscoob Furnaces, Heaters, Fireplaces & Air Conditioning 2 07-07-2016 08:18 AM
No power to thermostat jerhofer Sprinter and B-van Forum 23 08-04-2015 10:03 AM
No Power to Thermostat? Bearstream1 Furnaces, Heaters, Fireplaces & Air Conditioning 1 12-20-2009 08:53 PM


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.



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:56 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
×