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Error code reference

Speed Queen Washer Error Code -C-

Communication sequence checks out properly (displayed during Microwand communication).

Speed Queen codesSpeed Queen washer codes

Communication sequence checks out properly (displayed during Microwand communication).

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What -C- means on a Speed Queen washer

The -C- code on a Speed Queen washer is not an error or fault condition. It is a status indicator that appears during Microwand communication sequences. The Microwand is a programming and diagnostic tool used by technicians to interface with the washer's control system. When -C- displays, it confirms that the communication sequence between the Microwand device and the machine's control board is operating correctly and that data is being exchanged without issues.

This display is purely informational and part of the normal Microwand communication handshake process. The control board cycles through status indicators during the communication session, and -C- signals a successful link. Technicians use the Microwand to program cycles, adjust settings, retrieve diagnostic data, or update the machine's operating parameters depending on the model and configuration.

Because -C- indicates a positive confirmation rather than a fault, no corrective action is required when this code appears in the context of an active Microwand session. If this code appears unexpectedly outside of a deliberate Microwand communication session, it may point to a lingering state in the control board or an incomplete prior communication session. In those cases, cycling power to the unit is the appropriate first step to clear the display and return the washer to normal standby operation.

Source: manufacturer service documentation.

Common causes of -C-

  1. 01

    Active Microwand communication session

    Wiring / connection

    The most expected reason for -C- to appear is that a technician has connected a Microwand device and the control board is confirming a successful communication link. This is normal and expected behavior during a service visit.

  2. 02

    Incomplete or interrupted Microwand session

    Wiring / connection

    If a Microwand session was started and not properly terminated, the control board may continue displaying -C-. Cycling power to the washer typically clears this state.

  3. 03

    Control board retaining a prior communication state

    Wiring / connection

    In some cases the control board may hold a communication status flag after a session ends. A power cycle by unplugging the unit for 60 seconds will usually reset the display to normal.

See the test procedure for each cause

Frequently asked questions about -C-

What does -C- mean on a Speed Queen washer?
-C- is a status confirmation code that appears during Microwand communication. It indicates that the communication sequence between the Microwand programming tool and the washer's control board is working correctly. This is not an error or fault code. No repair is needed when this code appears in the context of a technician using a Microwand device.
How do I clear the -C- code on my Speed Queen washer?
If -C- is displaying outside of an active Microwand session, unplug the washer from the power outlet for at least 60 seconds, then plug it back in. This power cycle resets the control board and clears the communication status flag. If the code returns repeatedly without a Microwand device present, having a technician inspect the control board is advisable.
Is it safe to use my Speed Queen washer when -C- is showing?
The -C- code itself does not indicate a mechanical or electrical fault, so the washer is not in a dangerous state. However, if the display is stuck on -C- and the machine is not responding to normal controls, you should avoid running a wash cycle until the display clears. A simple power cycle is usually all that is needed to restore normal operation.
Will resetting my Speed Queen washer clear the -C- code?
Yes, a power cycle reset will typically clear the -C- display if it has persisted after a Microwand session. Unplug the unit for 60 seconds and then restore power. Because -C- is a communication status indicator rather than a fault code, it does not require any special reset procedure or service tool to clear.
How much does it cost to fix a -C- code on a Speed Queen washer?
In most cases there is no repair cost associated with -C- because it is a status indicator, not a fault. If a technician visit is needed to properly terminate a Microwand session or inspect the control board, a standard diagnostic service call typically ranges from $75 to $150 depending on your location and the service provider. Parts are not expected to be required for this condition.

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