Good Sam Club Open Roads Forum: HELP: Fridge issues and trip tmw!
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 > HELP: Fridge issues and trip tmw!

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BurbMan

Indianapolis, IN

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Posted: 05/18/22 07:35am Link  |  Quote  |  Print  |  Notify Moderator

Dometic fridge, we always keep a bag of ice in the freezer to help even the temps between trips. Last night went to put food in the fridge and it didn't feel very cold. Digital thermometer reading reveals fridge at 57* while freezer is at -15*! Control panel on top is set to #4 setting.

I also noted that the thermistor in the fridge slid down to the bottom of the fin. Would that cause the temp difference between fridge and freezer or is there something else I should check?

I raised the thermistor as much as I could but the cord is only long enough to get it about halfway up on the fin.

bgum

South Louisiana

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Posted: 05/18/22 07:53am Link  |  Quote  |  Print  |  Notify Moderator

You should have some play in the cord. Try pulling it out some. I use a clothes pin to keep ours at the top of the fin.

pianotuna

Regina, SK, Canada

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Posted: 05/18/22 08:35am Link  |  Quote  |  Print  |  Notify Moderator

Unfortunately, there may be a blocked tube.


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dougrainer

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Posted: 05/18/22 09:05am Link  |  Quote  |  Print  |  Notify Moderator

1. What KIND of digital thermometer? Did you place the Thermometer in a glass of water that had been in the refer 24 hours without opening the doors? There is NO WAY your freezer read -15 degrees. That -15 is interpreted as BELOW 0 degrees by 15 degrees. Or do you mean the temp was 15 degrees?
2. I hope you did not use a IR thermometer. These will not give correct accurate temps for refer readings
3. There is NO temp adjustment on RV refers for the freezer. The Temp system only adjusts the lower refer section and since you have an adjustable temp setting do not worry about the slider on the fins. Moving the slider is an option for Auto temp refers that have NO adjustable tstat. And that only changes the set temp by about 4 degrees.
4. Your normal temps shopuld be 0 to 10 degrees in the freezer and 28 to 36 in the refer.
5. Is it possible you were not completely level when loading up? That would degrade the ability to cool correctly. Doug

BurbMan

Indianapolis, IN

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Posted: 05/18/22 09:19am Link  |  Quote  |  Print  |  Notify Moderator

I did use an IR thermometer

Joe417

AL

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Posted: 05/18/22 09:26am Link  |  Quote  |  Print  |  Notify Moderator

The thermistor won't cause that much difference in temp. I had the same issue with our Norcold. Freezer worked but fridge didn't. I had to replace the cooling unit last fall.

The test to prove cooling unit operation, disconnect the AC heating element from the control board and connect the AC heating element directly to AC power and allow it to run overnight. Next morning, it should be below freezing in both the fridge and freezer.

I replaced ours with a Dutch Aire and it seems to be a more efficient unit than the Norcold.

Like you, we discovered our fridge problem as we got ready to take a trip. Fortunately, we have a 12V chest cooler and it didn't stop our trip.

Good Luck


Joe & Evelyn


dougrainer

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Posted: 05/18/22 11:19am Link  |  Quote  |  Print  |  Notify Moderator

Joe417 wrote:

The thermistor won't cause that much difference in temp. I had the same issue with our Norcold. Freezer worked but fridge didn't. I had to replace the cooling unit last fall.

The test to prove cooling unit operation, disconnect the AC heating element from the control board and connect the AC heating element directly to AC power and allow it to run overnight. Next morning, it should be below freezing in both the fridge and freezer.

I replaced ours with a Dutch Aire and it seems to be a more efficient unit than the Norcold.

Like you, we discovered our fridge problem as we got ready to take a trip. Fortunately, we have a 12V chest cooler and it didn't stop our trip.

Good Luck


Joel, An IR thermometer is NEVER used for refer and AC cooling temp measurements. The ONLY accurate temp measurement is a small glass of water left inside the refer for 24 hours and then taken with a metal probe type thermometer. You can argue all you want but you are plain wrong. Your testing procedure is spot on and that is what is needed for this OP's testing.

Grit dog

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Posted: 05/18/22 12:52pm Link  |  Quote  |  Print  |  Notify Moderator

Let’s try to stay on task kids. Stop arguing about thermometers. Pretty sure OP could tell his fridge was way to warm


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BurbMan

Indianapolis, IN

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Posted: 05/18/22 01:08pm Link  |  Quote  |  Print  |  Notify Moderator

I appreciate the help guys! Yes an IR thermometer is not the most accurate but was enough to confirm I have a problem. I installed the AccuRite wireless fridge and freezer thermometer and it's confirming my readings. Amazon same-day delivery is a great innovation, but save that for another post. Ordered at 10 am and was delivered by 1:30pm.

I set the fridge to "GAS" and dialed the temp control up to "5".
[image]

I double checked the thermistor, and this is as far as it will go up on the fin:
[image]

Here's the readings I'm getting on the Accurate sensors after being installed for about an hour. These were close to the same readings I was getting with the IR thermometer (the -15 must have been wrong, Doug).
[image]

So it looks like the cooling unit is bad? I thought switching over to gas would rule out a weak heating element but that doesn't appear to be the problem.

ferndaleflyer

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Posted: 05/18/22 01:18pm Link  |  Quote  |  Print  |  Notify Moderator

I had that same problem once and Doug walked me through it...never replaced the cooling unit and everything has worked ever since....I may have reprogrammed it!

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