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Old 07-30-2012, 12:58 PM   #1
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Location: Sherwood Park, Alberta Canada
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Norcold 1201 temp setting flashes on adjustment. Manual says Running on Backup System

My 2005 Itasca Horizon 40AD has a Norcold 1201. Now we had the Norcold Recall done last year and it has run fine until this spring when the Fridge died and showed nothing on the control Panel. Went to a RV Fridge Specialist in Edmonton AB and he unplugged the12 Volt line to the Recall Module and plugged in to the Fridge. The Fridge worked Great again. He is ordering a New Recall Module, but till then he is happy that it will work great. But about a week later I went to take the temp from 7 to 8 and the display flashed 10 times. Reading manual it says I am now running on a Back Up System??? What does that mean? Both the AC & Propane systems seem to work. The Fridge is cold. So is the Fridge about to Fail or does it need a Reset from the Module shutting off? The RV Fridge guy didn't know anything about this. I have heard you can do a reset, but also need to clean the Computer memory. Anybody ever hear of any of this? I appreicate anybodies Ideas

Keith & Brenda Davidson

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Old 07-30-2012, 09:35 PM   #2
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Welcome Keith to irv2.
Back up system, will have to check that out myself, page #6 in manual does mention the back up system only caution is watch your temperature settings it could cause temps to go high, if the fridge is freezing and cooling good in box below I would just leave alone until you get replacement part for recall.
Didn't notice a reset on your model fridge some control boards can't be reset.
I think they are up to version F, Norcold hasn't got it right yet.
One reason I still have first recall only and will replace cooling unit with the
Amish unit when the time comes on my 1200.

98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
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Old 07-31-2012, 01:51 PM   #3
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I seem to recall that if the Norcold (Same as mine) loses its thermistor input to the control board (Located on the outside back of frig) to regulate the temperature or if the thermistor goes "Out of resistance range", it will go into a default temperature mode "Backup System" to set the frig. temperature. Not sure where the default mode sets the temp, but it sounds like your thermistor is bad to me. You can easily remove, test it with a multimeter, or replace it. They are cheap thru EBAY, and I carry a spare. Almost easier to replace than test. They go bad. You may be surprised how many of these frig. problems are caused by bad thermistors, air flow, fan flow, etc. When working good, the thermistor should regulate the temp inside the frig. correctly with the temp. setting on the front panel around 4 or 5. Increasing above 7 indicates a problem to me, and probably won't help much. When the thermistor goes bad, the frig. will run either too warm or too cold and temps. do not regulate well (2 or 3 degrees no matter what the outside temp is---within reason). Be sure you get a Norcold Service Manual and the EBAY inside frig. fin-mounted dual fan unit if you are going to keep this frig. awhile. Also make sure your outside rear dual fans are cycling on and off OK. Lots of good info in the service manual--fault codes, thermistor checking with ohmmeter, etc. PM me for more info if you need to. Keeping this unit running good can be an experience. No doubt about that.
Jim and Connie, Silver City, NM
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Old 08-01-2012, 10:25 AM   #4
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We had our NearCold recall thermocouple go out and when it did it took the control board with it. Tech seemed to think that the reason was when the thermoncouple goes it cuts d.c. power to the board. Got a new board, took the recall thermocouple out of the look and ran it that way until it was replaced a month later with an Amish cooling unit. I recommend RV refrigeration specialists. Had the replacement done in Shipsawana, In at the factory. $900 for the unit and $300 for the install and work completed in three hours.
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Old 08-01-2012, 10:45 AM   #5
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