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Error code reference

Norcold Refrigerator Error Code dc rE

DC heater relay contacts of relay K1 on the DC Board are stuck closed

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What the dc rE error code actually means

Your Norcold refrigerator has detected that an internal electrical switch on the DC circuit board is stuck in the on position when it should be able to turn off. This switch is responsible for controlling the DC heating element, and the refrigerator has flagged it as malfunctioning. A technician will need to replace the DC circuit board to resolve this issue.

Diagnostic procedure

The full dc rE procedure

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1
First diagnostic step
Replace the DC Board.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of dc rE

Ranked by how often they cause this code
  1. 1Failed relay K1 with welded contacts
  2. 2DC Board failure
  3. 3Excessive current in the DC heater circuit
  4. 4Prolonged voltage irregularities

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Questions people ask about dc rE

What does dc rE mean on a Norcold refrigerator?
The dc rE error code means that the DC heater relay contacts on relay K1 of the DC Board are stuck in the closed position. This relay is responsible for controlling the DC heating element circuit, and when it cannot open as commanded, the refrigerator logs this fault. The error can appear in any operating mode. The recommended repair is replacement of the DC Board.
Will resetting my Norcold refrigerator clear the dc rE error?
No, resetting the refrigerator will not clear the dc rE error on a permanent basis. Because the fault is caused by physically stuck relay contacts on the DC Board, the underlying hardware problem remains regardless of any reset attempt. The error will return as long as the faulty DC Board is installed.
How much does it cost to repair the dc rE error on a Norcold refrigerator?
Repair costs will depend on the specific DC Board part required for your Norcold model and whether you hire a technician or perform the repair yourself. DC Board replacement parts typically range in price, and adding professional labor will increase the total cost. Getting a quote from an RV appliance repair technician familiar with Norcold units is advisable before proceeding.
Can I fix the dc rE error myself on my Norcold refrigerator?
The repair requires replacing the DC Board, which houses relay K1. A knowledgeable DIYer comfortable working with RV appliance electronics can perform this replacement, but care must be taken to disconnect all power sources before beginning work. If there is any suspicion that the DC heating element or wiring contributed to the relay failure, those components should also be inspected before installing the new board.
Is it safe to use my Norcold refrigerator when the dc rE error is showing?
Operating the refrigerator with this error present is not recommended. Stuck closed relay contacts mean the DC heater circuit may remain continuously energized, which can cause overheating and potential damage to other components. The unit should be taken out of service until the DC Board has been replaced.

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