Nor-Lake LogiTemp Walk-In Display Ed: Controller in Intro Mode

What does Nor-Lake error code Ed mean?

When a KE2 Evap OEM controller powers up without its basic setup, it does not guess. It enters an intro mode, shows Ed on the display and flashes the yellow and red LEDs together. In that state the controller is waiting for someone to complete the setup steps for this walk-in, such as the type of box and the basic values that tell it how to run. Ed is not an alarm about the refrigeration. It is a sign that the controller has not been told what it is controlling. You often see it on a new controller or after the settings were cleared. Until the setup is finished, the walk-in will not run the way you expect, and the display cannot be trusted to protect the box. Pressing keys at random can change values that matter, so it is better to leave the controller alone and use a hand thermometer while arrangements are made. A power problem that wiped the saved settings can also bring the controller back to Ed.

Affected models and control systems

This applies to the LogiTemp / KE2 Evap OEM controller on Nor-Lake Split-Pak walk-in coolers and freezers.

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

• Ed on the display with yellow and red LEDs flashing
• Walk-in not cooling the way it should
• Controller newly installed or recently reset
• No normal temperature readout

Possible causes

Listed in Nor-Lake's documentation

• Controller not yet set up after installation or replacement
• Saved settings lost after a power problem
• Controller that was reset
• Setup information for this walk-in not entered

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

• Controller replaced after a failure and not yet programmed
• Brief power loss during a storm that cleared the memory
• Settings reset by someone pressing a key combination

Safe checks before calling for service

How a technician diagnoses error code Ed

1. Read Ed and ask when the controller was replaced or last lost power.
2. Check the box temperature and the state of the compressor and fans.
3. Check the incoming power quality.
4. Enter the basic setup for the box and the system.
5. Confirm the controller runs the cycle normally and the alarms are correct.

How error code Ed differs from similar codes

Ed is not an alarm like CSA or ASA. It means the controller is waiting for setup.

Technical reference

Document

LogiTemp Electronic Controller System Operations Manual (171527 Rev. A), Alarms & Notifications List pp. 47-51

Edition

171527 Rev. A, 2025 (Refrigerated Solutions Group)

Models / control

LogiTemp / KE2 Evap OEM (Split-Pak systems, A1 refrigerants)

Section

Alarms & Notifications List, printed pp. 48-52; Troubleshooting Tables from p. 52

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.