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Error code reference

Speed Queen Washer Error Code EI:09

CRC-16 error during Micro-Wand communication.

Speed Queen codesSpeed Queen washer codes

CRC-16 error during Micro-Wand communication.

First step from the service manual

Re-aim Micro-Wand and try again.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What EI:09 means on a Speed Queen washer

EI:09 is a CRC-16 (Cyclic Redundancy Check) error that occurs during communication with the Micro-Wand, which is the infrared or wireless programming wand used to interface with the Speed Queen washer's control board. CRC-16 is a data integrity verification method: the receiving device calculates a checksum on incoming data and compares it to the transmitted checksum. When these values do not match, the control board flags a communication fault, indicating that the data received from the Micro-Wand was corrupted, incomplete, or otherwise invalid.

The most common trigger for EI:09 is a positioning or alignment issue between the Micro-Wand and the washer's receiver port. If the wand is aimed incorrectly, held at the wrong angle, or operated at too great a distance, the signal degrades and the data integrity check fails. Environmental interference such as bright ambient light, obstructions between the wand and receiver, or low wand battery power can also corrupt the transmitted data and produce this error.

In less common cases, the error can point to a hardware fault in either the Micro-Wand itself or the receiver on the control board. A damaged wand transmitter, a faulty receiver sensor, or a defective control board may cause persistent CRC-16 failures even when alignment and environment are ideal. Because the first diagnostic step is re-aiming the wand and retrying the operation, most occurrences of EI:09 are resolved without any parts replacement.

Source: manufacturer service documentation.

Common causes of EI:09

  1. 01

    Incorrect Micro-Wand alignment

    Wiring / connection

    The wand was not aimed directly at the washer's receiver port during communication. Repositioning the wand and retrying the operation typically resolves the error immediately.

  2. 02

    Excessive distance or obstruction

    Wiring / connection

    If the Micro-Wand is held too far from the receiver or there is an object between them, the signal weakens and data corruption occurs. Move closer and ensure a clear line of sight.

  3. 03

    Low or depleted Micro-Wand battery

    Part replacement

    Weak batteries reduce transmitter power, causing signal degradation that triggers CRC checksum mismatches. Replace the wand batteries and retry the communication.

  4. 04

    Ambient light interference

    Wiring / connection

    Strong light sources near the receiver can interfere with infrared signal reception and corrupt incoming data. Try operating the wand in a location with less direct or bright light.

  5. 05

    Faulty Micro-Wand or control board receiver

    Part replacement

    If alignment, distance, and battery issues have all been ruled out and the error persists, the wand transmitter or the receiver component on the control board may be defective and require replacement.

See the test procedure for each cause

Frequently asked questions about EI:09

What does EI:09 mean on a Speed Queen washer?
EI:09 indicates a CRC-16 data integrity error that occurred during communication between the Micro-Wand and the washer's control board. The control board received data from the wand that failed its checksum verification, meaning the data was corrupted or incomplete. This is most often caused by poor wand alignment or a weak signal rather than a hardware failure.
How do I fix the EI:09 error on my Speed Queen washer?
Start by re-aiming the Micro-Wand directly at the washer's receiver port and retrying the communication. Make sure you are within a reasonable distance, there are no obstructions, and the area is not flooded with bright ambient light. If the error continues, replace the wand batteries and try again. Persistent errors after these steps may require inspection of the wand or the control board receiver.
Is the EI:09 error on a Speed Queen washer a safety concern?
No, EI:09 is a communication error related to Micro-Wand programming and does not indicate a mechanical or electrical safety hazard. It does not affect the washer's core electrical systems or create a risk of damage to the machine or its load. The washer's normal operation is not compromised by this error code.
Will resetting the washer clear the EI:09 error?
A reset alone is unlikely to permanently clear EI:09 because the error is generated during active Micro-Wand communication rather than by a persistent system fault. The error will return if the same communication attempt is made under the same conditions. Correcting the wand alignment, distance, or battery level is what resolves the underlying cause.
How much does it cost to repair an EI:09 error on a Speed Queen washer?
In most cases there is no repair cost at all, since re-aiming the Micro-Wand or replacing its batteries resolves the issue. If the wand itself is damaged and needs replacement, the cost is typically in the range of $30 to $80 depending on the model. A faulty control board receiver would be a more significant expense, generally ranging from $150 to $400 or more including parts and labor.

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