IPSO Washer Error Code Ed05: IGBT Overcurrent

What does IPSO error code Ed05 mean?

The motor drive contains power switches called IGBTs that build the motor's three-phase output. They are designed to carry a defined amount of current. If a winding shorts, a cable is damaged or the basket drags heavily, the current rises in a fraction of a second, and the drive's protection shuts the switches off before they are destroyed. The control then displays Ed05. Operators see an abrupt stop, often right at the start of a spin, when demand is highest. The manual lists power down for at least two minutes and a check that the motor is not shorted. The two-minute wait lets the drive's stored energy fall away and its protection reset. A shorted winding, damaged motor wiring, heavy drag or a damaged drive are the likely causes. Because every restart sends the same surge down the same path, it is wise not to keep trying.

Affected models and control systems

The CHM495R family of washer-extractors, 20 to 100 lb, with the front-end control.

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

• Machine stops abruptly at the start of a spin
• Ed05 on the display
• Possible tripping sound or a burnt smell from the drive
• Code returns right after power is restored

Possible causes

Listed in IPSO's documentation

• The motor's windings, tested for a short
• Drag in the basket or bearings
• The drive's power switches

Other likely causes — what usually sits behind error code Ed05 on this control. A technician confirms which one it is before any part is replaced.

• Insulation breakdown in the motor from heat or moisture
• A motor cable damaged where it passes the frame
• A drive output stage that has already failed
• Water getting into the motor junction box

Safe checks before calling for service

How a technician diagnoses error code Ed05

1. Wait out the discharge time, then read the code history.
2. Disconnect the motor leads and meter each winding and insulation to ground.
3. Inspect the motor cable and junction box for damage or moisture.
4. Turn the basket by hand to rule out mechanical drag.
5. Test the drive output with the motor disconnected, and replace the drive only if it still trips.

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.