UniMac QN Washer Error Code E id drivE: Wrong Drive Board
On UniMac QN washer-extractors, E id drivE is a drive board ID error: the control found that the drive board is not the correct one for the machine configuration. Stop using the washer and switch off the power. Call us with your model number so we can find the right board.
High: the drum will not spin properly with the wrong drive board, so the washer is out of service.
What does UniMac error code E id drivE mean?
Each drive board carries an identity, and the front-end control compares it with what the machine is configured to need. E id drivE appears when the two do not match. This usually follows a board swap with the wrong part. The drum will not spin properly until the right drive board is in place. Think back to whether the drive board was replaced recently, because that is where the mismatch usually starts. The part number of the installed drive board, the machine configuration and model data, the connection between the drive and the control, and the repair history of the washer are the things to compare. The data plate tells us which board you need. The code is about identity, not about a part that has burned out, so a visually healthy board can still trigger it.
Affected models and control systems
This applies to UniMac QN washer-extractors of 20 to 100 lb, such as the UCA020QN, in the CHM1792C family. The correct board depends on the machine's model and configuration.
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
- E id drivE on the display
- Drum not spinning properly
- Code appearing right after a repair or board swap
Possible causes
Listed in UniMac's documentation
- Part number of the installed drive board
- Machine configuration and model data
- Connection between the drive and the control
- Recent repair history of the washer
Other likely causes — what usually sits behind error code E id drivE on this control. A technician confirms which one it is before any part is replaced.
- A board from a different machine capacity installed during an earlier service
- A board ordered by model family that differs by revision
- A replacement drive board that was never configured for this washer
Safe checks before calling for service
- Stop using the washer and switch off the power.
- Think about whether the drive board was replaced recently.
- Do not open the cabinet to swap boards.
- Call us with your model number so we can find the right board.
- Have the serial number and data plate details ready.
How a technician diagnoses error code E id drivE
- Ask what was repaired and when the code started.
- Read the data plate model and configuration.
- With power locked out and the drive discharged, read the part number on the installed drive board.
- Compare it with the maker's parts list for the model.
- Check the connection between the drive and the control.
- Install the correct board and confirm the code clears.
- Reading board part numbers means opening the electrical cabinet with stored charge present.
- Installing the wrong drive board can damage the board and motor.
- Matching a board to a machine needs the maker's data for that model.
How error code E id drivE differs from similar codes
E id drivE concerns the drive board identity, while E id oUtPUt concerns the input and output board identity.
Technical reference
- Document
- Washer-Extractor Programming CHM1792C_SVG, Part No. F8641001ENR4, Error Codes Table 29 (pp. 100-107)
- Maker documentation
- UniMac owner support
- 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 UniMac washer error codes
Is the new board defective?
Probably not. It is likely the wrong part for this configuration.
Can I try a board from another machine?
No. A mismatch can damage the board and motor.
Will restarting help?
No. The identity will not match any better on a restart.
Need help with UniMac error code E id drivE?
A technician confirms the cause on site and gives you the price in writing before any work starts.