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08-21-2012, 10:33 PM
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#1
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Junior Member
Join Date: Jul 2012
Posts: 30
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a/c doesnt turn off
Hello everyone! I just got my first camper in July. A Crusader 325RES. So far we love it. I'm having an issure with the a/c tho. No matter what temp setting I set the unit runs all the time. I turned it to 90° tonight and it kept running. I have a digital thermometer that says my camper is 70.4° so I'm not sure why it wont kick off. Any ideas?
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2011 F-350 King Ranch 6.7 Diesel
2013 Crusader 325RES
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08-21-2012, 11:07 PM
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#2
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Moderator Emeritus
Join Date: Nov 2008
Location: Winston-Salem, NC
Posts: 2,381
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On a camper AC, the fan always runs. The compressor cycles when needed to maintain temp, but the fan always runs. It's a design, too lengthy to get in to, but keeps it from freezing up. Kind of like the AC in your car, the fan always runs, but the compressor will cycle as needed. Hope this helps.
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LadyWindrider
2012 Ford F250 ext. Cab 4x4
2002 Jeep Wrangler Sahara
2008 Yamaha V-Star 650 Classic
2008 Work and Play 18LT
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08-21-2012, 11:13 PM
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#3
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Senior Member
Join Date: Jul 2011
Location: Stromsburg, Nebraska
Posts: 1,682
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In my rig, I can select fan and then adjust to auto, low, and high. Low and high are fan on options. Auto will allow the fan to shut off at desired temp.
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Joel and Teresa
2016 Sabre 34TBOK
2006 GMC 3500 CC LB DRW 4X4
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08-21-2012, 11:15 PM
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#4
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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When mines set to auto and a/c reachEsther desired temp it shuts off.
If it's set to (on) then the fans run non stop and a/c compresser only cycles .
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08-22-2012, 05:09 AM
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#5
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Senior Member
Join Date: Apr 2012
Location: Fort White, Fl
Posts: 760
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Which setting is best, auto or on?
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08-22-2012, 05:34 AM
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#6
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Member
Join Date: Jun 2012
Posts: 67
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RickV
We use Auto, have you checked your filters? Dirty filters can do lots of things...personal experience! Auto is like the a/c in your house..cycles on/off once the desired temp is met.
On will run until you turn it off.
Andi
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08-22-2012, 07:39 AM
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#7
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Junior Member
Join Date: Jul 2012
Posts: 30
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Thanks for all the replys. My thermostat doesn't have an auto option. It just has "furnace, cool, fan hi/low" I have it set at 75° but when I woke up this morning it was 62° in the camper and cold air still coming out.
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2011 F-350 King Ranch 6.7 Diesel
2013 Crusader 325RES
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08-22-2012, 07:46 AM
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#8
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by travelinfitter
Thanks for all the replys. My thermostat doesn't have an auto option. It just has "furnace, cool, fan hi/low" I have it set at 75° but when I woke up this morning it was 62° in the camper and cold air still coming out.
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Think you should get the manual out for the thermostat and read it very carefully. There has to be a way to shut the ac off & turn the furnace on/off and have neither furnace or ac run.
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08-22-2012, 07:56 AM
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#9
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Senior Member
Join Date: Feb 2012
Location: Lake County, Illinois
Posts: 301
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On that thermostat, repeated presses of the "On/Off Mode" button will cycle the system through Fan, Cool, Furnace, and Off. When the Furnace LED is showing, press the button one more time and WAIT. It may continue running for 30 seconds or so, but it will turn off.
Joel
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2011 Silverado 2500HD Duramax, 4x4, crew cab, long bed
Palomino Puma 253-FBS, 27' 5th wheel
1994 19' Class B on Chevy chassis
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08-22-2012, 08:03 AM
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#10
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Senior Member
Join Date: Mar 2012
Location: Chatham, IL
Posts: 215
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I agree-read the manual. I believe by pressing the on/off mode it will show "auto" I know ours does
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08-22-2012, 12:20 PM
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#11
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Dallas Texas
Join Date: Nov 2011
Posts: 296
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Quote:
Originally Posted by Great Horned Owl
On that thermostat.... It may continue running for 30 seconds or so, but it will turn off.
Joel
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Until then get a blanket.
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2004 Cardinal 33CKT
2006 Ford SDD F250 CC 4WD
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08-22-2012, 12:39 PM
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#12
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Moderator Emeritus
Join Date: Aug 2010
Location: Southeast Wisconsin
Posts: 6,949
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Here is the operating instruction manual for the Dometic Single Zone LCD Thermostat.
On page 7, it explains how to set your fan to "Auto".
It goes on to say that, in "cool" mode, when auto fan is selected the fan speed will vary depending on the difference between the temperature set-point and the room air temperature. In auto fan the compressor and the fan will cycle On and Off with the thermostat.
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Scott
DW, 3 Kids and our Goldens
2012 Shamrock 233S
2008 Toyota Sequoia 5.7L 4WD
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08-22-2012, 12:53 PM
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#13
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Junior Member
Join Date: Jul 2012
Posts: 30
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Quote:
Originally Posted by Triguy
Here is the operating instruction manual for the Dometic Single Zone LCD Thermostat.
On page 7, it explains how to set your fan to "Auto".
It goes on to say that, in "cool" mode, when auto fan is selected the fan speed will vary depending on the difference between the temperature set-point and the room air temperature. In auto fan the compressor and the fan will cycle On and Off with the thermostat.
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Thanks for posting the manual. The dealer did not have the manual for the thermostat in the packet of manuals they gave me. Thanks again everyone for the help.
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2011 F-350 King Ranch 6.7 Diesel
2013 Crusader 325RES
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08-22-2012, 01:02 PM
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#14
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Moderator Emeritus
Join Date: Aug 2010
Location: Southeast Wisconsin
Posts: 6,949
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Quote:
Originally Posted by travelinfitter
Thanks for posting the manual. The dealer did not have the manual for the thermostat in the packet of manuals they gave me. Thanks again everyone for the help.
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Let us know how it works
The Files section of our forum (above in the green menu bar) has many of the manuals for appliances, etc that you can download if you find yourself needing any others.
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Scott
DW, 3 Kids and our Goldens
2012 Shamrock 233S
2008 Toyota Sequoia 5.7L 4WD
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08-22-2012, 01:33 PM
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#15
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Member
Join Date: Feb 2012
Posts: 163
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Quote:
Originally Posted by travelinfitter
Hello everyone! I just got my first camper in July. A Crusader 325RES. So far we love it. I'm having an issure with the a/c tho. No matter what temp setting I set the unit runs all the time. I turned it to 90° tonight and it kept running. I have a digital thermometer that says my camper is 70.4° so I'm not sure why it wont kick off. Any ideas?
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It doesn't look like anyone is understanding your problem correctly. If you have temp set at 90 deg and it is going to 70.4 degrees, it is not a thermostat setting problem. I am assuming you can shut down the whole unit if you want. Unless I am the one that is confused, it sounds like you may have a wiring problem. Sounds like a 2 wires are touching each other and thermostat can't turn off compressor. I would guess wires behind thermostat could be touching each other, maybe too much insulation taken off.
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Jim and Carol
2012 Crusader 290RLT
2010 Ford F-250 King Cab Diesel
Harley Davidson Edition
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08-22-2012, 07:38 PM
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#16
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Junior Member
Join Date: Jul 2012
Posts: 30
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Quote:
Originally Posted by jriddering
It doesn't look like anyone is understanding your problem correctly. If you have temp set at 90 deg and it is going to 70.4 degrees, it is not a thermostat setting problem. I am assuming you can shut down the whole unit if you want. Unless I am the one that is confused, it sounds like you may have a wiring problem. Sounds like a 2 wires are touching each other and thermostat can't turn off compressor. I would guess wires behind thermostat could be touching each other, maybe too much insulation taken off.
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Exactly! When I turned the temp to 90° and left it like that for 5min it was still running. Ill take it apart tomorrow and see if I can find a problem.
__________________
2011 F-350 King Ranch 6.7 Diesel
2013 Crusader 325RES
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08-22-2012, 08:24 PM
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#17
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Senior Member
Join Date: Jun 2012
Location: Near North Bay, Ontario
Posts: 241
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Had the same problem with our Ultralite 2304s. AC would not shut off, just got colder and colder. Dealer repair notes said "relocate AC/heat thermostat on/off switch, rewire, repair holes in previous location". Not sure why they moved it, but you would never be able to tell if you did not know. It originallywas quite high up, maybe a foot below the ceiling and now is about the level of the fridge handle. Warranty job just after we took delivery.
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Tina & Ted & pooches
2012 Ford F-150 XLT 5.0L V8 4x4 with tow package
Andersen WD hitch with sway prevention
2012 Rockwood UltraLite 2304s trailer
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08-23-2012, 07:11 AM
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#18
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Member
Join Date: Feb 2012
Posts: 163
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Timarti could be right too. It could be a miswire too. If you don't see anything obvious, it may be time for your dealer to correct it. Also thanks to TRIGUY for instruction manual. I learned how to see the actual temp in camper and learned there are filters in system. Cleaned them last night.
Jim and Carol
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Jim and Carol
2012 Crusader 290RLT
2010 Ford F-250 King Cab Diesel
Harley Davidson Edition
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08-23-2012, 07:21 AM
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#19
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Senior Member
Join Date: Nov 2011
Location: Berlin , MARYLAND
Posts: 134
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Read the manual ! I agree with jt
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