UniMac Washer-Extractor Error Code EI03: IR Invalid Command
EI03 means a command received over the infrared link is not valid for this machine type or mode. The wash cycles are not affected. Check that the programming tool is set for this washer and try again.
Low: the infrared link rejected one command and normal operation continues.
- Code
- EI03
- Maker
- UniMac
- Equipment
- Industrial laundry
- Applies to
- PHM1263R family pocket hardmount washer-extractor (UWL/UWN/UWU 035-125) front-end control
What does UniMac error code EI03 mean?
The infrared window on a UniMac UW pocket hardmount washer-extractor accepts commands from a programming tool, and each command has to match the machine type and the mode the control is in. EI03 tells you the device got through to the washer, but what it asked for does not apply. This usually means the wrong settings file or the wrong mode on the programming tool. The wash cycles themselves are not affected, since only the link is involved. The manual points to the machine type the tool is set for, the control mode when the transfer began, the tool software version, and the receiver on the control if every command fails. A tool configured for a different washer model, or a washer that was in a running cycle when the tool tried to change settings, are the two ordinary reasons. Sending the same file again will not help until the tool or the mode is corrected.
Affected models and control systems
This applies to the PHM1263R family of UniMac UW pocket hardmount washer-extractors, models UWL, UWN and UWU 035 to 125, such as the UWL035K12. EI03 is one of the infrared messages on this 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
- EI03 on the display after sending a file
- Tool showing that the command was rejected
- Washer cycles unaffected
- Same result when the transfer is repeated unchanged
Possible causes
Listed in UniMac's documentation
- Which machine type the programming tool is set for
- Control mode when the transfer began
- Tool software version
- Receiver on the control if every command fails
Other likely causes — what usually sits behind error code EI03 on this control. A technician confirms which one it is before any part is replaced.
- A settings file saved from a different washer model and loaded here
- The washer left in a run or wash step that does not accept programming commands
- An out-of-date tool application that sends commands in a format this control no longer accepts
Safe checks before calling for service
- Check that the programming tool is set for this machine type.
- Make sure the washer is in the mode the tool expects, then try again.
- Leave the control cabinet closed.
- If EI03 returns with the right settings, note the tool software version and call us.
How a technician diagnoses error code EI03
- Read the code and confirm the machine type and control mode in the tool.
- Check the tool software version against the one the maker recommends for this control.
- Send a simple read command first to confirm the link before sending settings.
- Check the file origin and make sure it was saved from the same model range.
- Test the receiver only if no command of any kind is accepted.
- Loading the wrong settings into a washer can change water levels, temperatures and spin settings.
- Software versions between tool and control have to be matched using the maker's information.
- Isolating a receiver problem takes a known-good tool and a clean test file.
Technical reference
- Document
- Washer-Extractor Programming PHM1263R, Part No. F8208801R7, September 2015, Error Codes (p.53-54)
- Maker documentation
- UniMac owner support
- Edition
- Part No. F8208801R7, September 2015
- Models / control
- PHM1263R family pocket hardmount washer-extractor (UWL/UWN/UWU 035-125) front-end control
- Section
- Error Codes, Table 16, printed pp. 52-53 (PDF pp. 54-55)
- 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
Will the wrong file harm the washer?
The control rejects invalid commands, which is the reason for EI03. Check the file before trying again.
Do I have to power cycle the washer?
Not required. Correct the tool or mode and resend.
Is EI03 the same as EI05?
No. EI03 means the command itself does not fit. EI05 means the data inside it is out of range.
Need help with UniMac error code EI03?
A technician confirms the cause on site and gives you the price in writing before any work starts.