Speed Queen CHM495R Washer Error Code Ed08: Max Overcurrent

What does Speed Queen error code Ed08 mean?

Each drive has a ceiling for the current it will send to the motor. When the motor output reaches that highest current, the drive stops to protect itself and the display shows Ed08, and the load stays in the drum until the machine is cleared. This applies to Design 2 and 3 models only. The owner's manual says to power down and up. The question to ask is whether the code was a one-time surge or a pattern. A repeat points at a motor, wiring or drive problem rather than a one-time surge. The manual's causes are a motor or motor leads drawing the maximum current, a drum that drags and pulls heavy current, and a drive board that cannot limit the motor current. A lighter load is a good first test, because a heavily loaded drum asks the motor for more current, and if the code goes away with half a load, the mechanical drag is the place to look, while a code that returns even on an empty drum points at the motor or the drive.

Affected models and control systems

This page covers Design 2 and Design 3 machines of the CHM495R family washer-extractor front-end control. Ed05 is the separate IGBT overcurrent code from the same drive.

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 motor stops during start or spin
• Ed08 appears under a heavy load
• The load remains in the drum

Possible causes

Listed in Speed Queen's documentation

• A motor or motor leads drawing the maximum current
• A drum that drags and pulls heavy current
• A drive board that cannot limit the motor current

Other likely causes — what usually sits behind error code Ed08 on this control. A technician confirms which one it is before any part is replaced.

• A drum seal or bearing that has grown tight and draws more current as it warms up
• An oversized load of wet linen that pushes the motor to its limit each time

Safe checks before calling for service

How a technician diagnoses error code Ed08

1. Read the code and ask about load size and how often it repeats.
2. Run a light-load test and see whether the code follows the load.
3. Check that the drum spins freely and the bearings are sound.
4. Measure the motor current and the winding condition.
5. Replace the motor or drive board only after the drag is ruled out.

How error code Ed08 differs from similar codes

Ed05 reports a shunt overcurrent in the power switches, while Ed08 reports the motor output reaching the highest current the drive allows.

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.