Sunline RV Forum
Sunline User Photos

Go Back   Sunline Coach Owner's Club > Technical Forums > Repairs and Maintenance
Click Here to Login

Join Sunline Club Forums Today


Reply
 
Thread Tools Search this Thread Display Modes
Old 05-31-2010, 06:02 PM   #1
Senior Member
 
Join Date: Sep 2006
Location: Pennsylvania
Posts: 347
SUN #62
rich2500
duotherm a/c help

need some help again folks, went camping this weekend and went to turn the a/c on and nothing happened,so I checked the breaker and it was tripped,so I reset the breaker and then I could faintly here what I assume was the fan running slowly, but the unit would never actually run,anyone got any Ideas where to start trouble shooting,I'm about to rip ever one of the dometic appliances out of my camper and replace them with others,I never had any problems with any other brand appliances like I have with these dometics.
__________________

__________________
05 sunline 267sr
01 F-250 V-10 4x4 Lariat supercab SB auto 4:30 LS
draw-tite 1200# trunnion wd,friction sway control,prodigy
happy camping Rich,Maryellen,Josh and Jake
http://www.campingpa.com/
rich2500 is offline   Reply With Quote
Old 05-31-2010, 09:27 PM   #2
Senior Member
 
pwb01's Avatar
 
Join Date: Apr 2007
Location: New York
Posts: 945
SUN #258
pwb01 is an unknown quantity at this point
Is it possible you didn't have a high enough electrical service at the campsite? Many only offer 10 or 15 amp service when you should have 30 for the A/C.

It's also possible that even if you had the proper amperage that the site had low voltage this busy weekend. That would demand a higher amperage draw.

You'll have to check the manual but my guess is you need an absolute mininum of 20 to 22 amps to start the unit.
__________________

__________________
Paul & Sheri - Upstate New York - SUN-0258
Amateur Radio KD2KCY - VHF 146.520 MHz
2012 F150 F/X 4, 6cyl EcoBoost, Max Tow pkg
2013 Rockwood 8280WS 5th wheel
2006 Sunline Solaris T-1950
pwb01 is offline   Reply With Quote
Old 06-01-2010, 05:18 AM   #3
Senior Member
 
Join Date: Sep 2006
Location: Pennsylvania
Posts: 347
SUN #62
rich2500
low power was one of my first thoughts,but we had been camping with a big group and folks from our group had been on both sides of us and their a/c worked fine but mine did not in the middle even if they shut their a/c's off,after doing some research it is sounding like the start capacitor may be the problem.what I thought sounded like a fan running faintly I think was actually a hum, which appears to be a common sign of a bad start capacitor.bought my camper new and there is no manual for the a/c.
__________________
05 sunline 267sr
01 F-250 V-10 4x4 Lariat supercab SB auto 4:30 LS
draw-tite 1200# trunnion wd,friction sway control,prodigy
happy camping Rich,Maryellen,Josh and Jake
http://www.campingpa.com/
rich2500 is offline   Reply With Quote
Old 06-01-2010, 04:39 PM   #4
Senior Member
 
sunnyseagull's Avatar
 
Join Date: Aug 2006
Location: Pennsylvania
Posts: 221
SUN #28
sunnyseagull
Hi Rich


my buddy had the same thing as you are discribing and that is what it was the start capacitor very easy to replace about 125.00 I think good luck Dan
__________________
Dan
05 T264sr /00 Ford Excursion 6.8 v10
sunnyseagull is offline   Reply With Quote
Old 06-02-2010, 02:08 PM   #5
Junior Member
 
Join Date: Oct 2006
Location: Florida
Posts: 12
SUN #70
Sunny Side Up
We have a 2005 Sunline 2753 and this year for the first time, the AC fan didn't start when we de-winterized. I could hear the compressor but not the fan. After a drop of oil on the fan shaft, everything began working fine. I understand it's pretty common with Dometic Air Conditioners.

Good Luck
__________________
[/SIGPIC]Bart and Linda
2005 Sunline T2753
Sunny Side Up is offline   Reply With Quote
Old 06-02-2010, 10:46 PM   #6
Moderator
 
JohnB's Avatar
 
Join Date: Nov 2006
Location: Ohio
Posts: 10,178
SUN #89
JohnB is on a distinguished road
Rich

Are you electrically handy and do you have a VOM meter? I have been through this, this spring with a froze up fan.

Here is 127 pages of service manual that can help.

http://www.nwrvsupply.com/manuals/du...at_service.pdf

If the fan motor is froze, it will rob the starting power of the compressor as well. Before you go nuts, pop the top cover and try spinning the fan. If it turns by hand then that is step one.

You can use a 120VAC 60 watt light bulb to test the relays that the T stat is working the control board. It is in that manual as well or I can go over here.

In that manual you can do ohm checks to see if the motor is dead shorted and you can test the capacitors. If you make it past the dead short and the capacitor,

Again if you are electrically handy, you can apply 120 VAC and hot wire the control board to start the fan and the compressor independently. After checking for dead short and the capacitor (need an old analog meter for the capacitor)

In this pic


Pull the “fan” low speed wire off the control board and hot wire it direct. Use the breaker as a switch and jumper the wire. If the fans starts, then pull the compressor wire and do the same.

You will track it down then to which component is holding the unit out.

Good luck and take pics.

John
__________________
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC

Google Custom Search For Sunline Owners Club
JohnB is online now   Reply With Quote
Old 06-03-2010, 06:14 AM   #7
Senior Member
 
Join Date: Sep 2006
Location: Pennsylvania
Posts: 347
SUN #62
rich2500
John thank you for that link,now as for me being electrically handy, well it's not one of my strong points, but I do have a multimeter.I did pull the cover off and the fan spins free,and I don't think it's a thermostat or board problem because when I turn the a/c on I hear a humming sound from the unit so it must be getting power to the unit but the fan won't start.I got a supco spp6 capacitor coming and I'm going to be running a 30 amp electric service to hook up too,It's tough trouble shooting something without a power source,At this point I'm just going to install the new start capacitor and see if that fixes it, if not I will be asking for your expertise with troubleshooting.thank you much
__________________
05 sunline 267sr
01 F-250 V-10 4x4 Lariat supercab SB auto 4:30 LS
draw-tite 1200# trunnion wd,friction sway control,prodigy
happy camping Rich,Maryellen,Josh and Jake
http://www.campingpa.com/
rich2500 is offline   Reply With Quote
Old 06-03-2010, 11:42 AM   #8
Moderator
 
JohnB's Avatar
 
Join Date: Nov 2006
Location: Ohio
Posts: 10,178
SUN #89
JohnB is on a distinguished road
Rich

We are here if you need us.

Good news is the fans spins free. Changing out that motor is close to a total disassembly of the AC unit.....

The fan start capacitor is pretty easy to replace. I’m assuming you are already into this box, but if not here it is.






Depending on the vintage you have, the run capacitor may be a little different then in this photo.

As far as testing, while yes to run the entire AC unit you need the larger plug. However to test just the fan you do not. On the T stat is a slide switch to only turn the fan on. It is just an air circulation mode so to speak. It will run just the fan and no compressor. The fan only will run off of a 15 or 20 amp wall receptacle as long as you do not have a dead battery the convertor is trying to recharge. So once you get the capacitor you can try the fan only if you do not have the 30 amp line installed yet.

Good luck and let us know how you make out

John
__________________
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC

Google Custom Search For Sunline Owners Club
JohnB is online now   Reply With Quote
Old 06-04-2010, 05:15 AM   #9
Senior Member
 
Join Date: Sep 2006
Location: Pennsylvania
Posts: 347
SUN #62
rich2500
yes John I have been into that box and mine looks exactly the same as your pic and yes I did try running just the fan while at the campground and it would not run,great tip you pointed out about running it at home.saturday should be the test,went last night and got everything to run the 30 amp service and running to my local grainger today to pick up the spp6,so I plan on running the electric saturday and then installing the new capacitor.I will report back with my results.
__________________
05 sunline 267sr
01 F-250 V-10 4x4 Lariat supercab SB auto 4:30 LS
draw-tite 1200# trunnion wd,friction sway control,prodigy
happy camping Rich,Maryellen,Josh and Jake
http://www.campingpa.com/
rich2500 is offline   Reply With Quote
Old 06-06-2010, 09:37 PM   #10
Senior Member
 
Join Date: Sep 2006
Location: Pennsylvania
Posts: 347
SUN #62
rich2500
good news,nothing wrong with the a/c,hooked up the 30 amp service and the a/c fired right up so it must have been the electric on the site we had,I did still install the spp6 capacitor as it is supposed to have alot more ooomph,so hopefully I don't run into this same issue again.
__________________
05 sunline 267sr
01 F-250 V-10 4x4 Lariat supercab SB auto 4:30 LS
draw-tite 1200# trunnion wd,friction sway control,prodigy
happy camping Rich,Maryellen,Josh and Jake
http://www.campingpa.com/
rich2500 is offline   Reply With Quote
Old 06-08-2010, 09:06 PM   #11
Moderator
 
JohnB's Avatar
 
Join Date: Nov 2006
Location: Ohio
Posts: 10,178
SUN #89
JohnB is on a distinguished road
Good deal Rich and now you have a 30 supply at home. Good for a spare bedroom on a summer night
__________________
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC

Google Custom Search For Sunline Owners Club
JohnB is online now   Reply With Quote
Old 09-27-2016, 10:12 AM   #12
Senior Member
 
Drake's Avatar
 
Join Date: Aug 2010
Location: Virginia
Posts: 210
SUN #1340
Drake is an unknown quantity at this point
Hello Sunliners!! I think I have a bad starting or running capacitor in my A/C. Throw the switch and you get a hum... I was going to replace the whole A/C, as the old Duo-Therm BriskAir 559 Rotary Compressor has served well over for 38 years, but with the symptoms I am presented and the dread of hauling a new unit on top of the Sunline's notorious flimsy roof, I am not thrilled with the prospect. Much better to lay down the plywood and crawl up there with my ample self and two rather feather-weight capacitors. As my trailer is stationary, and I have a rather long trip to get there, I thought I would see if any of you good folk could provide me with the specs on both the starting and running capacitors for the 559 model ( yes it is 559 NOT 595). I thought I would order these online and risk the chance of this not being the problem. Thanks for your help!

P.S. My daughter moved back from TX and her Mom and I are full time caregivers for my grand daughters now, so I have very little time to compute and keep up with all of you guys and gals...more is the pity. That's my excuse for my absence...that and longer naps.
__________________

__________________
'88 T3200
Permanently situated in Charlotte County VA
Drake 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



» Featured Campgrounds

Reviews provided by

Disclaimer:

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


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:27 PM.


×