Speed Queen Washer Error Code EnXX: Machine ID Chip Error
On CHM1792C washer-extractors, En followed by two characters is a Machine ID chip error. The control cannot read the chip that tells it which machine it belongs to, so it cannot trust its own setup. Power the machine down and up once, write down both characters, and call us if the code returns.
Medium: the machine may not start normally, but the cause is a setup read and not a mechanical or water condition.
- Code
- EnXX
- Maker
- Speed Queen
- Equipment
- Washers
- Applies to
- CHM1792C family washer-extractor (QN models, 20-100 lb) front-end control
What does Speed Queen error code EnXX mean?
A small Machine ID chip tells the control of a CHM1792C washer-extractor which machine it belongs to and how it is configured. At start-up the control reads the chip. If it cannot read it properly, it shows En followed by two characters and cannot trust its own setup. The two characters point at the kind of read failure. Until the control and the chip agree again, the machine may not start normally, and the display shows this code in place of the usual ready message. The chip sits inside the cabinet, so the operator can do little beyond a restart. The manual lists a loose connection between the user control and the Machine ID chip, a chip that sits crooked or has dirty pins, a two-character value pointing to a chip read failure, and a CHM1792C user control board that fails to read the chip. A machine that has been moved, cleaned with water or recently serviced is the usual place to see this.
Affected models and control systems
CHM1792C family washer-extractors, QN models, 20 to 100 lb, with the front-end control and its input and output board.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- En and two characters show instead of the usual ready message
- The machine may refuse to start normally
- The code returns after a restart if the chip is still not read
Possible causes
Listed in Speed Queen's documentation
- A loose connection between the user control and Machine ID chip
- A Machine ID chip that sits crooked or has dirty pins
- A two-character value pointing to a chip read failure
- A CHM1792C user control board that fails to read the chip
Other likely causes — what usually sits behind error code EnXX on this control. A technician confirms which one it is before any part is replaced.
- A chip pushed out of its socket when the control panel was opened for service
- Dirty or oxidized chip pins from steam in a humid laundry
Safe checks before calling for service
- Power down the machine, power it up again and try once more, as the owner's manual says.
- The chip connection sits inside the cabinet, so it is left alone.
- Write down both characters after En.
- If the code returns, ask us to schedule service.
How a technician diagnoses error code EnXX
- Read both characters and confirm the code returns after a power cycle.
- With power off and locked out, inspect the Machine ID chip seating and pins.
- Clean oxidized pins and reseat the chip.
- Check the connection between the user control and the chip socket.
- Power up and see whether the control reads the chip.
- Replace the chip or the user control only after the reseat fails.
- The chip sits behind the control panel, where live 208-240 V wiring is close by.
- The chip carries the machine's own configuration, so it must be handled and matched to the machine by trained staff.
- Finding whether the chip or the control fails to read takes a known-good chip and a trial.
How error code EnXX differs from similar codes
EnXX is the Machine ID chip error on CHM1792C washer-extractors. EiXX is an infra-red error, and the Eio codes come from the input and output board.
Technical reference
- Document
- Washer-Extractor Programming CHM1792C_SVG, Part No. F8641001ENR4, Error Codes Table 29 (pp. 100-107)
- Edition
- Part No. F8641001ENR4, January 2020
- Models / control
- CHM1792C family washer-extractor (QN models, 20-100 lb) front-end control
- Section
- Error Codes, Table 29, pp. 100-108 (PDF pages equal printed pages)
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Speed Queen washer error codes
What is the Machine ID chip?
It is a small chip that tells the control which machine it belongs to and how it is configured.
Can I reseat the chip myself?
No. It sits inside the cabinet. Power it down and up once, then call us.
Will the machine run with En showing?
It may not start normally until the control and chip agree again.
Need help with Speed Queen error code EnXX?
A technician confirms the cause on site and gives you the price in writing before any work starts.