Error code

Nokia switch All models code 21

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Meaning

Indicates the maintenance link to the module did not clear its error status in the allotted time. Faulted hardware on the indicated module or faulted SF

Member details

Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.

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Possible causes

Go to Step 18

Solution

Solution steps are available to members and are not shown on this page. Answer the questions to open the solution.

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