Delfield Prep Table Error Code LEA: Cooling Over 24 Hours
LEA on a Delfield NP prep table means the control has called for cooling for more than 24 hours straight, including defrost time. It clears when the compressor cycles off or the power is shut off. On a cold pan, the manual points to a high ambient temperature or not turning the rail off nightly.
Medium: the unit has been running continuously and may be struggling to hold temperature.
- Code
- LEA
- Maker
- Delfield
- Equipment
- Prep tables
- Applies to
- 4400/4500 Series NP refrigerated prep tables with R290 temperature control (4424NP-4472NP, D4424NP-D4472NP, ST4424NP-ST4472NP and variants)
What does Delfield error code LEA mean?
LEA is a run-time alarm. The control counts how long it has been asking for cooling without a break, and the count includes defrost. If the compressor has been called to run for more than 24 hours straight, the control displays LEA. The manual names the likely causes for a cold pan: a high ambient temperature, or the rail not being shut off at night. In both cases the unit cannot reach its set point and keeps asking for cooling. The error clears if the control cycles the compressor off, or if the power is shut off. The alarm tone follows the usual pattern of about 10 seconds on and 50 seconds silent for 15 cycles, after which it stays silent while the code remains on the display. LEA does not say that something has failed. It says that the table has been working without a rest, and the reason is usually the room, the lid habits or a refrigeration problem that stops it ever catching up.
Affected models and control systems
The manual covers the 4400 and 4500 Series NP refrigerated prep tables with the R290 temperature control, including the 4424NP to 4472NP, D4424NP to D4472NP and ST4424NP to ST4472NP sizes and their variants.
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
- LEA on the display
- Compressor running without stopping for a full day
- Food at the back of the pans warmer than set
- Warm air coming from the condenser area
Possible causes
Listed in Delfield's documentation
- Control called for cooling more than 24 hours straight, including defrost
- On a cold pan, a high ambient temperature
- On a cold pan, the rail not being shut off nightly
Other likely causes — what usually sits behind error code LEA on this control. A technician confirms which one it is before any part is replaced.
- Condenser coat of grease and lint so the table cannot reject heat
- Door or lid gasket leak adding warm air faster than the unit can remove it
- Low refrigerant charge or evaporator icing that keeps the table from reaching its set point
Safe checks before calling for service
- Check the kitchen temperature near the table and move heat sources such as grills or fryers away if you can.
- Close the lids and doors and make sure the gaskets are seated.
- On a cold pan, switch the rail off at the end of service each night, as the manual suggests.
- If the compressor does not cycle off, turn the power off for a moment and watch whether LEA clears.
- For the service call, note how long the unit ran and how the food temperature held.
How a technician diagnoses error code LEA
- Read LEA and confirm the box temperature with a calibrated thermometer.
- Check the condenser and its fan for dirt and operation.
- Check gaskets, lids and room conditions.
- Check evaporator frost, the defrost cycle, and refrigerant pressures and temperature differences.
- Check the sensor readings against the thermometer.
- Confirm the unit now reaches its set point and the compressor cycles.
- Refrigerant pressures and R290 handling require licensed service tools and training.
- Condenser cleaning means removing panels near live wiring and the fan.
- A table that runs for 24 hours is working against a cause that needs measuring, not guessing.
How error code LEA differs from similar codes
LEA is about run time, not temperature. Hi and Lo are about the box temperature itself.
Technical reference
- Document
- Prep Tables & Compact Refrigerators, 4400 & 4500 Series: Specifications, Installation, Operation & Maintenance Manual
- Edition
- Part Number 9295093A, 11/25 (page footers 10/25)
- Models / control
- 4400/4500 Series NP refrigerated prep tables with R290 temperature control (4424NP-4472NP, D4424NP-D4472NP, ST4424NP-ST4472NP and variants)
- Section
- Section 3 Operation, control table p. 24
- 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 Delfield prep table error codes
How do I clear LEA?
The manual says it clears if the control cycles the compressor off or if the power is shut off.
Does LEA mean a part failed?
Not by itself. The manual points on a cold pan to a high ambient temperature or not shutting the rail off nightly.
Why does the alarm go quiet?
It sounds in 15 cycles and then stays silent, but the code stays on the display until it clears.
Need help with Delfield error code LEA?
A technician confirms the cause on site and gives you the price in writing before any work starts.