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Old 08-09-2008, 10:10 AM   #21
wingnut60
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fridge update

disconnected the thermister, at the same time moved it to above the fin area. The temp went to 30 overnight, so it would appear the thermister is bad. Have now reconnected the thermister with the sensor above the fins to see it anything different happens.

Have ordered a new thermister from CW to have if it proves out to be the problem.

thanks for all the information provided by several members of the forum, it has really helped to maybe head off taking the trailer in for service.

Joe

I am also going to direct wire the fan with an on/off switch, and add a second fan same setup. Can anyone tell me if there can be TOO much air across the tubes/fin area?
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Old 08-09-2008, 11:01 AM   #22
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frdge

no that makes no sense does it? disconnect and move it....will try it if sensor is not above fin already...will be interested to hear what happens now that you have reconnected it. mine is sitting at48 degrees after unplugging.....
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Old 08-09-2008, 12:27 PM   #23
wingnut60
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thermister

Almost immediately after reconnecting the thermister, the temp started to rise and the fins in the fridge compartment showed moisture drops. So, have to conclude that having the sensor connected and located above the fin area didn't help, so still think the sensor is defective. Have disconnected it again and see if fridge responds by getting cooler again. Its gonna be 100 again today, so will be hard to get much of a drop til it runs overnight.

Also, just after disconnecting the sensor once again, there was a ticking noise heard in the back--not the propane trying to ignite--don't know what that was, but it quit after a while.

The saga continues......
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Old 08-10-2008, 08:52 AM   #24
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fridge

mine went to 45 over nite....disconnected. i wish it would drop a bunch! We have to go to Vegas for a doctor appt. on Monday and won't get back until TUesday so new one won't go in until Wednesday....If it works we will be able to leave San Diego on AThursday...2 months later than planned...but at least we will have a few weeks away.
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Old 08-10-2008, 10:35 AM   #25
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fridge problems

Waited all day with sensor disconnected--didn't look good as temp stayed near 60 in fridge--went out this morning and it was at 30 again!!! I have a thermister ordered, but am going ahead with taking it in to CW and see what they say--and, see how the Good Sam warranty works. CW charges $54 min for 1/2 hr work/$105 hr. GS has the $200 deductible--this will be interesting to see what I end up paying. Also got a fan running in the compartment without shutoff.

I can't take the chance with vacation in early Sept not having the unit working 100%--so off to CW to see what happens. Will also report back on how their service dept in S. Fort Worth (McClains) shakes out--seems to be a lot of negativism about CW service in some forums.

Kinda odd about setting the appt--last month, there was a 3 week wait, yesterday I got the appt for tomorrow. ????

Joe
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Old 08-10-2008, 06:43 PM   #26
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fridge problem

The 30 degrees this morning couldn't keep up with the heat down here--was 58 in there about 4PM, with the thermister disconnected. Oh, well, going in for service tomorrow. Put the thermister back, put the cover on the the control board, turned off the fan, so that all would be as it was when they start looking at it.
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Old 08-13-2008, 11:12 PM   #27
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fridge problem

McClains/Camping World has run the diagnostics on my fridge--and talked to Dometic. Decision isays a 2nd cooling fan is needed, and new lower temp thermostat for fan. Waiting on parts. Good Sam CSP is going to pick up most of cost above deductible they say.

Will just have to see how it does when I get it back. Gotta have this working for the Tetons trip in Sept.
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Old 08-14-2008, 08:58 AM   #28
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Temp in refer cabinet vs freezer

What is the temperature in your freezer cabinet when you check the refrigerator compartment?
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Old 08-14-2008, 09:19 AM   #29
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fridge

RodeWorthy,

Freezer has been cold enough to keep ice frozen, but just barely. The cubes were not cold enough to stick a finger to--don't have an actual freezer temp. The cooling unit is working, of that I am sure. CW has had the fridge side down to 20, so it is working, just not correctly. This is the NDR1292 SxS unit. Some days it would work, some days it was too warm in fridge to keep food safe.

I am not sure that the fans are the only problem, tho. Just have to let the techs go thru the process, then see if it works correctly. I am surprised that Dometic recommended the 2nd fan, but there wasn't one there originally. Guess some of the newer installs have the 2 fans?

Joe
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Old 08-14-2008, 09:39 AM   #30
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fridg

we were away for a couple of days and new thermister arrived while we were gone. picked it up yesterday...fridge was way cooler because we had been gone. in this months good sam magazine I ran across a fix it situation just like ours. the Guru guy said to unplug the thermister, stick the probe in ice water for 30 minutes...then check the resistance (sp?) with an ohm meter...it should be between 8500 and 9500. ours was at 8000. we tried that just for fun. because we didn't have enough time to put the new one in yesterday.
this morning we are going to Mexico for diesel and will install the thermister when we return...I can hardly wait. no wait, this is THursday..maybe we will wash the rig today since there are no rigs next to us, do the fridge, and go to Mex. first thing tomorrow morning. The we sholuld be finally ready to leave San DIego by MOnday!! YIPPEE
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Old 08-14-2008, 11:45 AM   #31
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Berghild,

Just curious, where are you staying in San Diego and what are the rates like.

My brother is there and I was thinking of visiting him either this year or next.
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Old 08-14-2008, 09:27 PM   #32
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san diego

we are in chula vista at the Elks lodge.
the rates are pretty high....we can't afford them. BUt the county parks are great and their rates are very reasonable. Before we were Elks we used to stay at Sweetwater Summit in BOnita...very nice but no sewer yet. there are parks all over...in Santee, near eL cAJON...IN OCEANSIDE. kOA is this highest.....campland by the bay is kinda high....I'm thinking 45 is high to me and it goes way up from there.
We stayed at a prak in El Cajon for $750. PER MNTH....TO ME THAT IS TOO HIGH. course here we sit at this elks at 600....but it is a bargain for around here.
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Old 08-15-2008, 04:34 AM   #33
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Temp in refer cabinet vs freezer

Joe,
When my refer was not cooling refrigerator cabinet due to bad thermistor the freezer cabinet dropped to as low as -5 degrees F. Very cold. It stayed below the zero mark no matter which setting between 3 and 5 that we used. When the refer was working properly before the thermistor failure the freezer was around 8-10 degrees F. at setting 3. After the thermistor was replaced the freezer temperature went back to 8-10 degrees at setting 3.

None of the above were in very high ambient air temperature. Our problem persisted through 35 - 85 degree ambients. My model is two door RM3962. My refer came with two fans. No indication they have ever run but can't say they have not.

Has anyone considered a defective circuit board? If you are sure your refer is capable of cooling then you are dealing with a control problem.

From what I experienced I think your freezer should be colder than just barely keeping ice frozen if it is just a control problem. The extra fan may help but I have no experience with that.

Just my thoughts based on our experience. I hope some of it helps but I have no expertise so rely on the experts helping you.
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Old 08-15-2008, 08:10 AM   #34
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Frigde problem

RodeWorthy,
ALL your comments are helpful--I had ordered a thermister prior to giving up the self-fixing. It should be in and I will have it just in case. I have a little time before my trip if it doesn't get fixed this time in the shop.
Very worrisome that the problem is properly figured out, but have to give the techs the benefit of the doubt, til I see if it stays working. Real concern on my part is it has worked fine inbetween not working--so its kind of like "Is it REALLY fixed, or is it gonna quit while I'm in Wyoming"
situation.

Thanks,
Joe
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Old 08-16-2008, 12:57 PM   #35
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fridge problem

well here's the latest. The new thermister is in and nothing has changed except that the OMH reading on the new thermister was at 9100 and that is higher than the old one. Owners manual states it should be at between 7 and 10,000....that is different than what I had read in Good Sam magazine this month. Anyway freezer is very cold arouind 5 and fridge is at 42 on 5 setting.
THis is the NDR 1292 model side by side. The temp here in san diego is 73 right now. Moderate temps here all the time! So the two fans are not running.
How do I test the crcuit board? I am trying not to call the tech..I don't think they know as much as you guys do....but at least they should know how to test the circuit board!
We have been stuck here for 2 months longer than we wanted due to other issues...I was hoping to leave on Monday..HA.
HELP!
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Old 08-16-2008, 02:02 PM   #36
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fridge problem

and yes, I am going to call Dometic on Monday.....I just wish I could fix it NOW
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Old 08-16-2008, 02:16 PM   #37
wingnut60
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fridge problem

Since you have plenty of cooling in the freezer, and fridge needs to be a little colder, have you thought about using one of the small battery powered fans (don't laugh) on the lower shelf to get some air movement?
This might help get you by til it gets fixed correctly. This little fan helps us when we have it loaded to the gills with food starting on a trip.

Another thing--how are you measuring (and where) the temps? We had a digital remote, but it went out. Now we are using a simple mercury thermometer, but it requires us to open and read, so we lose cold air every time we open to check it.

Still waiting on fans and switches to see if CW/Dometic has the correct diagnosis on ours.

Of all the needs in trailering, this has to be the one that can be most frustrating when not working correctly.

Joe
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Old 08-16-2008, 02:36 PM   #38
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fridge...

well i used to use one of those fans....it broke and for some reason it never got replaced. For now, DH is convinced that there is absolutely nothing wrong with the fridge. I supposedly have too much stuff in it. Nothing compared to the way it has been packed on previous occasions...but for now it is half empty so he can see for himself. needless to say we WON"T be leaving anytime soon, since I have not been able to order the part until this last little test is complete.
I think the solution CW is giving you is a crock...but I will be anxious to hear the result.....I am convinced that a good tech is damn near impossible to find!
I need a glass of wine!
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Old 08-16-2008, 03:21 PM   #39
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FWIW!

1. When a fridge has been running at a higher than normal temperature, it can take a day or two to cool down to its coldest.

2. I do use the battery powered fridge fan mentioned, as it does make a significant fridge temperature difference. When the batteries are depleted, and the fan stops, the fridge temp goes up about 4 to 5 degrees. I do have the fan placed on the 2nd shelf from the top. When I put new batteries in the fan, the fridge returns to the lower temps. On the "4" setting, the fridge temp ranges from 35/36 degrees to 38/39 degrees, depending on how often we are in the fridge, and how hot it is outside. Right now it is 84 degrees outside at 3:00PM - yes a cool day for Texas summer - and the fridge is on 36 degrees. Our fridge is the larger two door model (10 cu. ft.)

....................ie - get a fan, lol

3.When my thermister was replaced by a tech, I did have to move it high up on the fin to finally get the fridge temps down to where I thought they should be.

Good luck!!!
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Old 08-17-2008, 09:02 AM   #40
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fridge

well the half empty fridge e xperiment is not working...temp is up to 52 degrees.....going to unplug the thermister for now and talk to domeetic in the morning.
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