IPSO Washer-Extractor Error Code E do: Door Opened During Cycle

What does IPSO error code E do mean?

The control reads two door signals: one that says the door is open and one that says it is locked. They should never both be true at once. When they are, the control reads it as an attempt to open a locked door during a cycle, stops the cycle and displays E do. A person reaching for a moving basket is a real danger, so the machine is built to react at once. Staff find it halted with a wet load in the drum. The manual says the message clears when power is removed. If E do appears with nobody near the door, then a switch is reporting wrongly or the latch is worn. The door switch and lock switch alignment is the first thing to check. Latch wear is next, and the control's door inputs are checked once the switches and latch are ruled out. The door should be opened only after the lock has released.

Affected models and control systems

This applies to IPSO washer-extractors in the CHM495R family, 20 to 100 lb, with the front-end control in that programming manual.

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 suddenly and E do shows on the display
• The machine halts with a wet load in the drum
• E do appears although no one touched the door

Possible causes

Listed in IPSO's documentation

• Door pulled while it was locked
• Door switch and lock switch out of alignment
• Latch worn
• Control's door inputs reading wrongly

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

• A door that has been tugged by impatient users before the lock releases
• A door switch actuator that sticks half-way and signals open while locked

Safe checks before calling for service

How a technician diagnoses error code E do

1. Read the code and ask whether anyone pulled the door.
2. Observe the door-open and door-locked inputs at the control as the door is closed and locked.
3. Check the alignment of the door switch and the lock switch with the power locked off.
4. Inspect the latch for wear and play.
5. Replace a switch or latch only when the input test shows it reporting wrongly.

How error code E do differs from similar codes

E do is both door inputs high together. E dL is a lock that does not engage or release within 10 seconds.

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.