Speed Queen CHM495R Washer Error Code Ed01: Drive Communication
Ed01 on a Design 2 or 3 CHM495R washer-extractor is an SPI communication error: the front-end control cannot communicate with the motor drive. Power down and leave the door alone until the lock lets go. If the code returns, book service with us.
High: the control cannot start or hold a spin without the drive link.
- Code
- Ed01
- Maker
- Speed Queen
- Equipment
- Washers
- Applies to
- CHM495R family washer-extractor front-end control (20-100 lb)
What does Speed Queen error code Ed01 mean?
A CHM495R of Design 2 or 3 splits the work between a front-end control that runs the program and a motor drive that spins the drum. They exchange messages over an SPI link. If the control cannot reach the drive, it cannot start a spin or hold one, so the cycle stops and the display shows Ed01. The owner's manual tells a technician to power down, check the input power and the six-pin connection, then power up again. That list shows what the link depends on: input power reaching the motor drive, a six-pin plug between the control and the drive that is firmly seated, and a drive board that still answers. Because the link carries every command to the motor, a problem there can look like a dead machine even when the motor is sound. The code is for Design 2 and 3 machines, so check the model label before assuming it applies to an older CHM495R.
Affected models and control systems
This page covers Design 2 and Design 3 machines of the CHM495R family washer-extractor front-end control, 20 to 100 pounds. Design 1 machines have different drive codes.
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
- The cycle stops and the drum does not turn
- Ed01 shows on the display
- The door stays locked for a while
Possible causes
Listed in Speed Queen's documentation
- No input power reaching the motor drive
- A loose six-pin plug between control and drive
- A drive board that no longer answers the front-end control
Other likely causes — what usually sits behind error code Ed01 on this control. A technician confirms which one it is before any part is replaced.
- A six-pin connector worked partly out of its socket by years of vibration
- A power fuse or breaker feeding the drive that opened after a surge
Safe checks before calling for service
- Power down the machine, as the owner's manual says.
- Leave the door alone until the lock lets go.
- Leave the cabinet closed; the six-pin connection is a technician's check.
- If the code returns, note whether it came right after a power event, and book service with us.
How a technician diagnoses error code Ed01
- Read the code and confirm the machine is a Design 2 or 3.
- Verify the input power reaching the motor drive with a meter.
- Inspect the six-pin connection for seating, bent pins and heat marks.
- Power up and watch whether the drive answers the control.
- Replace the drive board or cable only after power and plug test good.
- The drive takes high-voltage input power, and checking it needs live measurements by a licensed technician.
- The six-pin plug sits inside a cabinet that holds energized parts.
- A dead drive and a bad plug show the same code, so the test order matters.
Technical reference
- Document
- Washer-Extractor Programming CHM495R_SVG, Part No. F8208501ENR10, March 2017, Error Codes (pp. 36-37)
- Edition
- Part No. F8208501ENR10, March 2017
- Models / control
- CHM495R family washer-extractor front-end control (20-100 lb)
- Section
- Error Codes table, pp. 36-37 (E Pr only on Design 1 models; Ed01-Ed11 on Design 2 and 3 models)
- 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
Is Ed01 a motor problem?
Not directly. It reports that the control and the drive cannot talk, though the cause may sit in the drive.
Will powering down clear it?
The manual starts with a power-down, but a repeat means the link, supply or drive needs testing.
Does every CHM495R show Ed01?
No. It applies to Design 2 and 3 machines.
Need help with Speed Queen error code Ed01?
A technician confirms the cause on site and gives you the price in writing before any work starts.