True EoC: the display has lost touch with the control
Some True units have the display separate from the control, joined by a cable.
Mon–Sat, 8am–8pm
- Controls and power
- Commercial controls and board repair
- Source: True Residential
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What EoC
actually means.
Some True units have the display separate from the control, joined by a cable. EoC is the Danfoss ERC message for a communication error between the two. True's troubleshooting chart has technicians check the display cable connections before anything else.
True Residential commercial appliance display · also shown as E13
What to do when EoC shows on the commercial applianceKind of codeControls and power
The controller itself is reporting trouble, or the supply behind it is: a display with dead segments, a keypad that stopped responding after steam or degreaser got behind it, relays that stick, stored recipes or cycles that vanished overnight, a blown control fuse, or one leg of a three-phase feed missing so half the heat or the pump is gone. A full power cycle at the breaker, done as the manual describes, clears a passing glitch; a code that returns, a scorched smell or any sign of moisture behind the panel means the breaker stays off, and that is a visit.
Usually leads toCommercial controls and board repair
Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so.
Shows up asCommercial 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.
MakeTrue 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.
SourceTrue Commercial Refrigeration General Control Guide, P#811072, rev. C (09/2025)
EoC is listed for Danfoss ERC controls and E13 for Danfoss ETC controls 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 EoC on its commercial appliances. Follow it to the end: the last card says whether this is a visit.
Check the food temperature with a separate thermometer, since the display cannot be trusted.
Note whether the unit is still running; you can often hear the compressor and fans.
Book a visit and mention EoC so the cable and connectors are checked first.
Still there?
It usually turns into commercial controls and board repair. Book with the code and the model number.
What not to do
EoC is not a temperature alarm, and the cabinet may be holding fine. On a Danfoss ETC control the communication error reads E13 instead.
What you may
notice with it.
The commercial appliance problem EoC tends to arrive with. Answer these at the commercial appliance before anyone is booked.
All problems
Where EoC usually leads
Commercial controls and board 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 repairMore True Residential codes
All 14 True Residential codesControls and power on other makes
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.
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
EoC Communication error between control and display
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. EoC is listed for Danfoss ERC controls and E13 for Danfoss ETC controls in True's general control guide (rev. C, 2025).
True Residential EoC 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.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about EoC.
Can I clear EoC myself?
Does EoC mean my True has stopped cooling?
Can a cleaning crew cause EoC on a True?
What are SYn and non on a True display?
Back to your everyday
Still showing EoC?
A booking with a code goes further when it has the code as shown, the model and serial from the data plate, and a word on whether the unit still holds temperature, heats, rinses or spins. With those three, the office can match the likely part to your unit the same day.