Code decoder
Delfield error codes
Pick the maker and the equipment, or type the code. Each page says what the code means on that control, what is safe to check and when to stop.
- Codes
- 2,442
- Makers with codes
- 98
- Updated
- November 2026
DEFDelfield Prep Table Error Code dEF: Normal Defrost IndicationE01Delfield Prep Table Error Code E01: Air Sensor DefectE02Delfield Prep Table Error Code E02: Coil Sensor DefectE03Delfield Prep Table Error Code E03: Sensor 3 DefectE04Delfield Prep Table Error Code E04: Sensor 4 DefectHiDelfield Prep Table Error Code Hi: High Temperature AlarmLEADelfield Prep Table Error Code LEA: Cooling Over 24 HoursLoDelfield Prep Table Error Code Lo: Low Temperature AlarmUHiDelfield Prep Table Error Code uHi: Line Voltage Too HighULoDelfield Prep Table Error Code uLo: Line Voltage Too Low
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Code not listed, or no code at all?
A unit that shows nothing often points to power or the control. Call us with the maker and model number and we talk it through.