UniMac Washer Error Code EI02: Infra-Red Time-Out
EI02 on a UniMac UW pocket hardmount washer-extractor is an infra-red time-out: the washer waited for the next part of a transfer and nothing arrived in time. Normal cycles are not affected. Re-aim the tool, hold it still until the transfer ends, and check that it has power.
Low: a data link message only; the unit keeps running.
What does UniMac error code EI02 mean?
EI02 is the infra-red time-out message on UniMac UW pocket hardmount washer-extractors such as the UWL035K12. During a transfer with an external tool, the washer expects the next piece of data within a set time. If nothing arrives in time, the link has opened but not finished, and the control gives up and displays EI02. The cause is almost always on the tool side of the beam, such as a hand that moved, a tool that lost power or a window that slows the signal. As with the other infra-red messages, the wash system itself is untouched, and the washer can go on doing normal cycles. The manual lists a tool that moved before the transfer finished, a tool battery that ran low, a dirty control window, and a weak receiver on the control if it repeats.
Affected models and control systems
Listed for the PHM1263R family of UniMac UW pocket hardmount washer-extractors (UWL/UWN/UWU 035-125), such as the UWL035K12, front-end control with infra-red window.
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
- EI02 appears partway through a transfer
- The tool shows a transfer that stops at the same point
- Wash cycles keep running normally
- Message clears after a complete transfer
Possible causes
Listed in UniMac's documentation
- Device that moved before the transfer finished
- Device battery that ran low mid-transfer
- Dirty control window slowing the infra-red link
- Control infra-red receiver that is weak, if it repeats
Other likely causes — what usually sits behind error code EI02 on this control. A technician confirms which one it is before any part is replaced.
- Transfer started while the operator was still walking up to the machine
- A rechargeable tool that dropped below the voltage needed for a long transfer
- Steam film on the window in a humid laundry room
Safe checks before calling for service
- Re-aim the external device at the control window and start again.
- Hold the device still until the transfer ends.
- Check that the device is charged or powered.
- If EI02 happens every time, call us.
- Note how far into the transfer it fails.
How a technician diagnoses error code EI02
- Check the tool battery and run a short transfer to see where it stops.
- Clean the window and test the transfer from close range, steady, in shade.
- Compare the result with a second tool to see whether the link or the tool is slow.
- Check for ambient infra-red interference such as bright lights next to the control.
- Replace the receiver circuit only after other tools also time out.
- Inspecting the infra-red receiver needs access behind the control panel, near 208-240 V circuits.
- A transfer that stops partway can leave the settings half written, so the machine's program needs to be verified after a successful pass.
- Deciding between a weak tool and a weak receiver takes a second known-good tool.
How error code EI02 differs from similar codes
EI02 is a transfer that starts but stalls. EI01 is a send that never reaches the tool, and EI04 is a request out of order.
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 washer error codes
Is EI02 a machine problem?
Usually not. It is a data link stall, and the washer works normally.
Why did the tool stop mid-transfer?
Movement or a low battery are the usual reasons.
Should I rerun the whole transfer?
Yes. Start over from the beginning and hold the tool steady.
Need help with UniMac error code EI02?
A technician confirms the cause on site and gives you the price in writing before any work starts.