--- title: "True LEA: the Danfoss control suspects a refrigerant leak" description: "What LEA means on True LEA: the Danfoss control suspects a refrigerant leaks, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/true-lea/" --- # True LEA: the Danfoss control suspects a refrigerant leak True's guide names LEA the refrigerant leakage alarm on Danfoss ERC controls; the no-display version flags the same alarm as three flashes then one. ## What LEA actually means. True's guide names LEA the refrigerant leakage alarm on Danfoss ERC controls; the no-display version flags the same alarm as three flashes then one. It is a warning drawn from how the system is behaving, not a leak someone has found. Only a technician with a leak detector can confirm it, and on units charged with R290 that work follows flammable-refrigerant rules. True Residential commercial appliance display What to do when LEA shows on the commercial appliance ### Kind of code Compressor and cooling The unit is running but not moving heat out of the box the way it should. On a walk-in that is often a condensing unit on the roof choking on cottonwood or grease, a condenser fan that stopped, an evaporator fan or defrost heater that failed so the coil iced solid, or a slow refrigerant leak; a reach-in adds a door gasket or heater that lets warm air in. Cleaning the condenser face with the power off and checking that the doors close are fair first steps; the refrigerant circuit, the compressor and every line stay with a technician. ### Usually leads to Walk-in cooler repair Walk-in coolers and freezers back to temperature: evaporators, fans, defrost, drain heaters, condensing units and doors. ### Shows up as Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone. ### Make True Residential A True cooler or prep station in a restaurant is looked at once the kitchen confirms where the held food is sitting for now. ### Source True Commercial Refrigeration General Control Guide, P#811072, rev. C (09/2025) Listed for the Danfoss ERC control in True's general control guide (rev. C, 2025). ## Before you book, in this order. Each step comes from True Residential's own guidance for LEA on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Check food temperatures and move anything above 41°F to a unit that is holding. 02 Make sure the doors are closed and the condenser is not smothered in dust, since both make the compressor run long. 03 Do not open panels or touch the tubing; book a visit. ### Still there? It usually turns into [walk-in cooler repair](https://commercialappliancerepair.center/services/walk-in-cooler-repair/). Book with the code and the model number. ### What not to do LEA does not prove there is a leak, and it is not the condenser alarm, which is Con. A door left open for hours can make the system behave like it is short of refrigerant. ## What you may notice with it. The commercial appliance problems LEA tends to arrive with. Answer these at the commercial appliance before anyone is booked. [All problems](https://commercialappliancerepair.center/problems/) Before you call ### [Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display](https://commercialappliancerepair.center/problems/commercial-error-code/) [All 8 causes, cheapest first](https://commercialappliancerepair.center/problems/commercial-error-code/) It also comes with - [**Reach-In Cooler Not Holding Temperature Through a Shift**](https://commercialappliancerepair.center/problems/reach-in-not-holding-temperature/) - [**Prep Table Running Warm in the Top Rail and the Base**](https://commercialappliancerepair.center/problems/prep-table-running-warm/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where LEA usually leads ## Walk-in cooler repair. **Walk-in evaporator fan, defrost heater or drain line heater, door gasket, frame heater, expansion valve, leak repair, compressor or condensing unit · moderate to highest.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/walk-in-cooler-repair/) ## True Residential commercial appliances. A True cooler or prep station in a restaurant is looked at once the kitchen confirms where the held food is sitting for now. [True Residential commercial appliance repair](https://commercialappliancerepair.center/brands/true/) More True Residential codes [HI](https://commercialappliancerepair.center/error-codes/true-hi/) [LO](https://commercialappliancerepair.center/error-codes/true-lo/) [dOr](https://commercialappliancerepair.center/error-codes/true-dor/) [dEF](https://commercialappliancerepair.center/error-codes/true-def/) [HA](https://commercialappliancerepair.center/error-codes/true-ha/) [P1](https://commercialappliancerepair.center/error-codes/true-p1/) [P2](https://commercialappliancerepair.center/error-codes/true-p2/) [E01](https://commercialappliancerepair.center/error-codes/true-e01/) [Con](https://commercialappliancerepair.center/error-codes/true-con/) [uLi](https://commercialappliancerepair.center/error-codes/true-uli/) [EoC](https://commercialappliancerepair.center/error-codes/true-eoc/) [EE](https://commercialappliancerepair.center/error-codes/true-ee/) [All 14 True Residential codes](https://commercialappliancerepair.center/error-codes/#codes-true) Compressor and cooling on other makes [Beverage-Air LEA](https://commercialappliancerepair.center/error-codes/beverage-air-lea/) [Delfield LEA](https://commercialappliancerepair.center/error-codes/delfield-lea/) [Hoshizaki E3](https://commercialappliancerepair.center/error-codes/hoshizaki-e3/) [Randell CON](https://commercialappliancerepair.center/error-codes/randell-con/) [Traulsen CLN FIL](https://commercialappliancerepair.center/error-codes/traulsen-cln-fil/) [Turbo Air C1](https://commercialappliancerepair.center/error-codes/turbo-air-c1/) [Victory CHt](https://commercialappliancerepair.center/error-codes/victory-cht/) [All 15 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-cooling) True Residential builds this ### Commercial cold storage Reach-in and pass-through cabinets, walk-in coolers and walk-in freezers, prep and sandwich tables, undercounter units and blast chillers that hold a kitchen's food at safe temperatures. True Residential builds this ### Commercial cooking equipment Fryers, griddles, charbroilers, restaurant ranges, convection and combi ovens, steamers, kettles, holding cabinets and toasters, on gas or electric, that make up the hot side of a kitchen line. ## In True Residential's own words > LEA Refrigerant leakage alarm [True Commercial Refrigeration General Control Guide, P#811072, rev. C (09/2025)](https://www.truemfg.com/wp-content/uploads/2025/09/811072_Commercial-Refrigeration-General-Control-Guide_REV_C_EN.pdf) [True Commercial Refrigeration General Control Guide, P#811072, rev. C (09/2025)](https://www.truemfg.com/wp-content/uploads/2025/09/811072_Commercial-Refrigeration-General-Control-Guide_REV_C_EN.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed for the Danfoss ERC control in True's general control guide (rev. C, 2025). ## True Residential LEA commercial appliance repair, where we come out. The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered. 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Check food temperatures and move anything above 41°F to a unit that is holding. If it comes back, it needs a visit. ### Is LEA on my True dangerous? It is a warning, not a detected gas leak. If your unit uses R290 and you smell gas or hear a hiss, clear the area, keep flames and switches away and book a visit. ### Can I reset LEA on a True myself? Unplugging may clear the display, but the cause stays. If LEA returns, the system needs a leak check. ### What else can trigger LEA on a True? Anything that keeps the compressor running without reaching temperature, such as a door held open or a badly blocked condenser, can make the system look short of refrigerant. --- **[Read on the site: True LEA: the Danfoss control suspects a refrigerant leak](https://commercialappliancerepair.center/error-codes/true-lea/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**