DC0040 Beeps/Alarms Immediately On Power - Temp Sensor Replacement?

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DC0040 Beeps/Alarms Immediately On Power - Temp Sensor Replacement?

I have a discontinued DC0040 in my boat that emits a beep/alarm tone immediately upon receiving power. Power cycling via the thermostat xxxx does not clear the alarm. The unit does cool and otherwise appears fully functional.

I do not believe this model has a door alarm; I have read that it will give a high temp warning in temperatures above 130* F.

There is no reason to think this portion of the boat is anywhere near 130*.

Is there a temp sensor somewhere that can be ordered and replaced?

Status: Open Sep 25, 2026 - 01:14 PM

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Staff Answer

Sep 25, 2026 - 01:14 PM

I can't confirm what triggers that alarm on the DC0040 or where its sensor is. It could be a high-temperature or low-voltage alarm. Check the voltage at the fridge while it's running, since low voltage often triggers an alarm on compressor fridges. We don't carry a sensor for that model. If it's ready for replacement, our Norcold replacement guide lists Norcold's current DC models.

Since I can't confirm this 100% from here, please email us at info@rvfridgeguys.com or call 800-712-8822 with your model and serial number and we'll double-check it for you. You can also browse www.rvfridgeguys.com.

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