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Old 01-11-2019, 04:40 AM   #1
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Dometic ndr 1292

Thank you in advance for any assistance.

My Dometic Refrigerator is in limp mode. I have searched high and low but cannot find amy information regarding resetting it. Any experienced individuals who can provide me guidance to accomplish such a task.

Thank you.
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Old 01-11-2019, 06:34 PM   #2
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Here's a link to the manual in case you don't have one.
NDR-1292 Manual

Do you know which Limp mode your unit is in?
Is the display working? If so then you're likely in mode 2, which means that your thermistor is likely bad. You have to replace it in order to get it out of limp mode.

Here's what it says about Limp Mode;
Quote:
LIMP MODE OF OPERATION
This control system contains a feature where it will
continue to operate the cooling system in the event of a
failure of a major operating component. Two different
modes of operation can occur in this category.
If for some reason the display module becomes non
functional, the control system will revert to full automatic
operation selecting the best energy source available
with AC, GAS priority. The temperature of the refrigerator
will be maintained at the MID position within normal
temperature tolerances. The power module will continually attempt to reestablish operation of the display module.
The second limp mode of operation will execute when a
failure of the temperature sensing device or associated
electronic circuitry occurs. If this should occur, the control system will operate on the energy source selected
via the control panel. The cooling unit will run continuously on the selected energy source. The refrigerator
will continue to operate in this mode indefinitely or until
a new sensor is installed and the system is reset.
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Old 01-22-2019, 07:48 AM   #3
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Dometic refrigerator issue

Bama,

Thank you very much for taking the time to respond to my issue. What is happening is, the unit still operates, however, all of the lights on the panel DO NOT WORK AND ARE NOT ILLUMINATED, other than, the power button will turn unit off, and the two buttons on far right of panel DO illuminate. The unit doesn’t seem to work off LP and I have checked the fuses and both 3amp and 5amp have been replaced. I had this similar issue a while back but at that time the “check” light was illuminated. In that instance it WAS a fuse. I wil review the information you provided in detail and respond. Thank you again for your contribution to my issue. It is very much appreciated.
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Old 01-22-2019, 10:52 AM   #4
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Sounds like maybe the display panel is the problem and therefore it's in limp mode one.

Good luck getting it working. And please come back and let us know what you find.
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Old 01-22-2019, 04:07 PM   #5
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Bama, again, thank you for your swift insight. Greatly appreciated. I concur, however, my only mental block to it being the panel is the the “two” far right climate buttons DO work, as does the power, with said, I’m sure it could also be irrelevant. Your thoughts? I did explore the manual as well as online to exhaustion and can’t seem to isolate an exacting resolution. It was suggested to me that, possibly, if the failure is a result of some power interruption, a resolution could be to COMPLETELY power down the beast. Then after a brief moment, power up again. ? I have a 45ft diesel pusher so I’m not sure it becomes a larger can of worms. Your thoughts? Thank you again. Sorry to trouble but I have really exhausted myself trying to resolve it. I could take to service but I’m far to stubborn not to resolve myself and too impatient to wait to get in to service. Thank you.
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Old 01-22-2019, 04:16 PM   #6
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The display could be sending the control board an error or even not sending it the communication it expects and therefore it puts the fridge in limp mode. Some buttons may work but the control board would still think it's bad.

Powering down the fridge, waiting a few minutes and powering it back up is worth a try, but you have to remove both 12 volt and 120 volt power for a few minutes.
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