UniMac QN Washer-Extractor Error Code E id oUtPUt: Output Board ID Error
E id oUtPUt on a UniMac QN washer-extractor means the input and output board is not the one the machine expects, usually after a replacement with the wrong part. Replace nothing yourself; call us so the right board can be identified.
Medium: the machine will not run normally until the right board is fitted, but the cause is a part mismatch.
- Code
- E id oUtPUt
- Maker
- UniMac
- Equipment
- Industrial laundry
- Applies to
- CHM1792C family washer-extractor (QN models, 20-100 lb) front-end control
What does UniMac error code E id oUtPUt mean?
E id oUtPUt on a UniMac QN washer-extractor such as the UCA020QN is an Input/Output board ID error. The input and output board switches the valves and the door lock, so the control needs to know exactly which board it is talking to. It reads the board's identity and compares it with the machine's configuration. If the output board is not the one it expects, the control will not carry on.
Until the correct board is installed, the machine will not operate normally, and cycles will not start. This usually follows a board replacement with the wrong part. Four things matter: the part number of the installed I/O board, the machine configuration and model data, the board connections, and whether a recent repair changed the board.
The maker's operator step is to install the correct board. That is not something to try from the front panel. Note when the code began, especially if it followed a repair, and have the model and serial numbers ready.
Affected models and control systems
E id oUtPUt is listed for the CHM1792C family washer-extractors, the QN models from 20 to 100 lb, with the front-end control; the manual's example model is the UCA020QN.
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 display shows E id oUtPUt and no cycle starts
- The code began after a repair
- Valves and lock do not respond
- The code returns at every power-up
Possible causes
Listed in UniMac's documentation
- Part number of the installed I/O board
- Machine configuration and model data
- Board connections
- Whether a recent repair changed the board
Other likely causes — what usually sits behind error code E id oUtPUt on this control. A technician confirms which one it is before any part is replaced.
- Board from a different QN size or option set fitted by mistake
- Machine data not matched to the new board after replacement
- Connector to the board not fully seated, giving a wrong identity read
- Board bought used and set for another machine
Safe checks before calling for service
- Replace nothing yourself. The maker's operator step is to install the correct board.
- Note when the code began, especially if it followed a repair.
- Leave the cabinet closed and have the model and serial numbers ready.
- Call us so the right board can be identified and installed.
How a technician diagnoses error code E id oUtPUt
- Read the code and ask about repair history.
- Read the model and serial number from the data plate.
- Match the I/O board part number to the parts list for that model.
- Check the board connections and seating.
- Fit the correct board and verify the configuration.
- Finding the right I/O board needs the data plate and the maker's parts list.
- Changing the board means lockout and work around mains-level wiring.
- A wrong board can switch valves and the door lock incorrectly.
How error code E id oUtPUt differs from similar codes
E id oUtPUt concerns the output board identity, while E id drivE concerns the drive 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 industrial laundry error codes
Does the wrong board damage the washer?
It will not run properly, and a mismatched board can switch loads wrongly. That is why the control refuses to start.
Is E id oUtPUt like E nr?
No. E nr says the I/O board is not ready. This code says it is the wrong board.
Who can fix it?
We identify the correct board and install it.
Need help with UniMac error code E id oUtPUt?
A technician confirms the cause on site and gives you the price in writing before any work starts.