Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-01-2013, 11:48 PM   #1
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
No power to roof AC

I tried a search on the subject and couldn't find any info.
Before I take the moho to an RV repair place, I'll ask the gurus out there what you all think.
I have a 28' with only one roof AC. It's the original Coleman with heat strip. After starting the generator, I attempted to make the AC work, but nothing happens. I took the ceiling cover off and the on-off switch cover off as well. Put a meter up there and no juice! All the components look nice and clean and new.
So where do I look to see if it's a simple fix?
__________________

__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 01-02-2013, 12:39 AM   #2
Rivet Master
 
ROBERTSUNRUS's Avatar

 
2005 25' Safari
Salem , Oregon
Join Date: Mar 2006
Posts: 7,268
Images: 18
Blog Entries: 51
Hi, have you checked yor circuit breakers?
__________________

__________________
Bob

2005 Safari 25-B
"Le Petit Chateau Argent"
[ Small Silver Castle ]
2000 Navigator / 2014 F-150 Eco-Boost / Equal-i-zer / P-3
YAMAHA 2400 / AIR #12144
ROBERTSUNRUS is offline   Reply With Quote
Old 01-02-2013, 09:04 AM   #3
Rivet Master
 
1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,009
Quote:
Originally Posted by ROBERTSUNRUS View Post
Hi, have you checked your circuit breakers?
Good 1st question.

2nd question; Did you overload your generator? (Are you getting 120V power to the rest of the trailer?)
__________________
Wazbro is offline   Reply With Quote
Old 01-02-2013, 12:19 PM   #4
Rivet Master
 
bkahler's Avatar

 
1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 6,353
There could be two different circuit breakers in the circuit. One at the generator itself. The second is likely to be a 30 amp single breaker box hidden somewhere in a closet or under a bed, etc. If either is tripped you won't have power to the A/c.

Do you have a factory service manual showing the layout of the 120vac wiring system? If there is a separate 30 amp breaker it will likely be shown on one of the pages in manual.

Good luck!

Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels, brake drums, windows & holding tanks left to sell)
bkahler is offline   Reply With Quote
Old 01-02-2013, 03:09 PM   #5
Rivet Master
 
1989 34.5' Airstream 345
Silverton , Colorado
Join Date: Oct 2003
Posts: 2,101
Does the 28 have a control switch(dial-type) for the various big-draw items(AC, Microwave)?
__________________
Michael & Tracy
1989 345 Motorhome
CHARTER MEMBERS: FOUR CORNERS UNIT, AND PROUD OF IT!!!
We live for the moment, 'cause when you get there, it's gone...
ScrapIrony-2 is offline   Reply With Quote
Old 01-02-2013, 08:04 PM   #6
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
I read the owner's manual and found the circuit breaker in the bathroom closet where the central vacuum is located. All the breakers were on, but I turned all off, then on again to make sure. Still doesn't work the AC. There are only two fuses at the generator, one says "IGN", so I think they pertain to 12V only. This will be intereseting to find out why no juice to the AC with GENSET on.
This 28' model does not have the manual control switches for AC, microwave, I bet because it only has the one roof AC.
__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 01-02-2013, 09:18 PM   #7
Rivet Master
 
Smartstream's Avatar

 
1982 28' Airstream 280
Port Angeles , Washington
Join Date: Aug 2008
Posts: 1,371
Quote:
Originally Posted by Astrodokk View Post
I read the owner's manual and found the circuit breaker in the bathroom closet where the central vacuum is located. All the breakers were on, but I turned all off, then on again to make sure. Still doesn't work the AC. There are only two fuses at the generator, one says "IGN", so I think they pertain to 12V only. This will be intereseting to find out why no juice to the AC with GENSET on.
This 28' model does not have the manual control switches for AC, microwave, I bet because it only has the one roof AC.
You need to go back to basics. You should have an automatic transfer switch to change from AC cord to generator supply. Do you have 120 volts if the 30 amp cord is plugged in? Also is there 120 volts at the outlets in the coach? Now when you disconnect the cord and start the generator do you have 120 volts at the outlets? If not pull the cover off the breaker box in the closet and check for 120 volts. If no voltage at the box go to the box in the aft under-body compartment where the 30 Amp cord is connected. This is where the transfer switch is located. If you can identify where you have 120 volts and where you don't then you can look for a fix.
__________________
Cheers, Dan
________________________________________


"Socialist governments traditionally do make a financial mess. They always run out of other people's money. It's quite a characteristic of them."
~ Margaret Thatcher ~
Smartstream is offline   Reply With Quote
Old 01-06-2013, 01:25 PM   #8
Airstream Driver
 
PeterH-Airstreamer's Avatar

 
1997 30' Excella
1983 31' Airstream310
Austin , Texas
Join Date: Feb 2002
Posts: 3,375
Images: 51
Quote:
Originally Posted by Smartstream View Post
You need to go back to basics. You should have an automatic transfer switch to change from AC cord to generator supply. Do you have 120 volts if the 30 amp cord is plugged in? Also is there 120 volts at the outlets in the coach? Now when you disconnect the cord and start the generator do you have 120 volts at the outlets? If not pull the cover off the breaker box in the closet and check for 120 volts. If no voltage at the box go to the box in the aft under-body compartment where the 30 Amp cord is connected. This is where the transfer switch is located. If you can identify where you have 120 volts and where you don't then you can look for a fix.
on his 28' model (since it is a 79 build) the transfer switch does not exist. Instead you plug your 30 amp shore plug in a receptacle in the cord department to use the Generator power. Was it plugged into that receptacle, Astro?
__________________
1990 29' Excella Trailer
1996 Airstream B190
1997 30' Excella Trailer
AIR #13
PeterH-Airstreamer is offline   Reply With Quote
Old 01-06-2013, 03:02 PM   #9
Rivet Master
 
Astrodokk's Avatar
 
1992 30' Airstream 30
Santa Rosa , Northern California wine country
Join Date: May 2003
Posts: 618
Images: 4
The coach electrical cord is plugged into the recepticle (which is generator supplied 110V power when plugged in).
I disconnected it and plugged it into shore power with an adapter, but all I hear is a slight hum at the roof AC.
I think I'll take it in to a pro to repair it, as I think it could be something internal to the Ac. All the recepticles work with either Genset or shore power.
__________________
1992 Airstream 300LE, rear queen, Banks Power!
Astrodokk is offline   Reply With Quote
Old 01-06-2013, 03:28 PM   #10
Rivet Master
 
bkahler's Avatar

 
1974 20' Argosy 20
Richmond , Kentucky
Join Date: Jan 2003
Posts: 6,353
Whenever we get that hum on the 310 ac units it usually turns out to mud dauber nests gumming things up.

Brad
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels, brake drums, windows & holding tanks left to sell)
bkahler is offline   Reply With Quote
Old 01-07-2013, 12:14 PM   #11
Rivet Master
 
Waipio Rim's Avatar
 
1984 31' Airstream310
Honokaa , Hawaii
Join Date: Jun 2010
Posts: 667
We had the "hum" at our rear a/c unit when we bought it. When I got on the roof and took the cover off, found that a piece of foam rubber that was supposed to seal the cover to the fan housing had gotten sucked into the fan and kept it from turning. Pulled it out, and now she runs...
__________________

__________________
Waipio Rim 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
Power Loss & Pets Inside? Frank&Mike The Pet Forum 67 07-27-2013 09:57 AM
Solar Power for Battery Maintenance Tumajin Generators & Solar Power 10 08-12-2011 07:10 AM
Sloped Roof Under Air Horns Johns5711 Land Yacht/Legacy Motorhomes 7 07-27-2011 08:02 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:48 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.