Carrier 58MVC Error Code Status Code 11: No Previous Code

What Does Code Status Code 11 Mean?

The Carrier 58MVC control board stores status codes for troubleshooting purposes, keeping a history of recent fault events. Status code 11 means the stored code memory is empty — there are no previous fault codes to report. This is the "all clear" status for the code history.

The code history clears automatically after 72 hours, regardless of whether the furnace loses power. It can also be cleared manually by jumpering the R, W/W1, and Y/Y2 thermostat leads together while the setup switch SW1-1 is in the ON position. After clearing, code 11 will display when you access the stored codes.

If you see code 11 and your furnace is working normally, no action is needed. If you see code 11 but are experiencing heating problems, it means any previous fault codes have already been erased. You may need to wait for the problem to recur so the control can capture a new status code for diagnosis. Make sure setup switch SW1-1 is in the OFF position during normal operation.

Common Causes

When to Call a Professional

Contact a licensed HVAC technician if:

• The furnace is not working properly but code 11 shows no stored faults — a technician can perform real-time diagnostics
• You suspect an intermittent problem but codes keep clearing before you can read them
• The setup switch SW1-1 will not return to the OFF position or appears damaged