What does Coreco E0 mean?

On the Coreco controller (Carel easy / easy compact), E0 is a control-probe fault on probe 1. The unit can no longer read the cabinet air temperature it regulates against, so refrigeration control is affected.

What does Coreco E1 mean?

On the Coreco controller (Carel easy / easy compact), E1 is an evaporator-probe (also called the food-conservation or defrost probe, probe 2) fault. With this probe unreadable, temperature-controlled defrost and fan control that rely on the evaporator reading cannot work normally.

What does Coreco E2 mean?

On the Coreco controller (Carel easy / easy compact), E2 is a condenser-probe (or product/food-conservation probe, probe 3) fault. Probe 3 is enabled with parameter A4=10 for the dirty-condenser alarm or A4=11 as a product probe. With it unreadable, the dirty-condenser monitoring or product reading is lost.

Does AskWhiz cover Coreco equipment?

Yes. AskWhiz is trained on official Coreco service and operator documentation, so it can answer fault-code, error-message, and repair questions for Coreco refrigeration units directly in WhatsApp.

How do I troubleshoot Coreco error codes?

Send AskWhiz your Coreco model number and the error code or symptom on WhatsApp. It searches the official Coreco manuals and returns the likely cause and the documented fix, step by step, so you stop scrolling through PDFs in the field.

Is AskWhiz a substitute for the Coreco service manual?

No. AskWhiz reads the official Coreco documentation and surfaces the relevant procedure fast, but always follow the manufacturer safety warnings and call a qualified Coreco technician for work that requires one.

What does Coreco P1 mean?

On the Coreco controller (Dixell XW30/XW60/XW70), P1 is the room (thermostat) probe failure alarm — the probe is interrupted, short-circuited or out of range. While P1 is active the compressor runs on a timed cycle set by parameters Con and CoF instead of thermostatic control.

What does Coreco P2 mean?

On the Coreco controller (Dixell XW30/XW60/XW70), P2 is the evaporator probe failure alarm. With the evaporator probe unreadable, defrost can no longer end on temperature and ends on time instead.

What does Coreco HA mean?

On the Coreco controller (Dixell XW30/XW60/XW70), HA is the maximum (high) temperature alarm: the alarm probe exceeded the ALU limit after the ALd delay. Outputs are unchanged; check doors, loading, a clean condenser and the alarm thresholds.

What does Coreco dA mean?

On the Coreco controller (Dixell XW30/XW60/XW70), dA is the door-open alarm from the door-switch input after the doA delay. It clears when the door is closed, and the compressor and fans then restart.

What does Coreco CA mean?

On the Coreco controller (Dixell XW30/XW60/XW70), CA is a serious external alarm (input set to bAL) or a pressure-switch alarm (input set to PAL). All regulation outputs are switched OFF until the cause is resolved.

What does Coreco E7 mean?

On the Coreco controller (Carel KDT-Touch), E7 is keypad-to-power-board communication error: no communication between the keypad and the power board for 60 seconds or longer puts the KDT keypad into error mode E7; the keypad stays

What does Coreco E3 mean?

On the Coreco controller (Carel RTN400), E3 is probe Pb3 faulty (measured values outside operating range or probe faulty/short-circuited/open); label E3 displayed, alarm icon permanently on.

What does Coreco AH1 mean?

On the Coreco controller (Carel RTN400), AH1 is hIGH temperature alarm 1: value read by probe 1 exceeds HA1 after time set in tA1; label AH1 recorded in folder ALr; no effect on control.

What does Coreco OPd mean?

On the Coreco controller (Carel RTN400), OPd is door-open alarm: digital input activated (door open for a time greater than tdO); label Opd recorded in folder ALr, alarm icon permanently on; regulation blocked as requested by dOd.

What does Coreco E10 mean?

On the Coreco controller (Carel RTN400), E10 is clock Alarm: clock (RTC) battery dead / RTC failure; label E10 recorded in folder ALr; functions associated with clock not available.

What does Coreco nPA mean?

On the Coreco controller (Carel RTN400), nPA is general pressure switch alarm (n < PEn, Auto Reset): activation of pressure switch alarm by general pressure switch; folder nPA recorded in folder ALr; regulation blocked.

Refrigeration

Coreco error codes, decoded.

Look up any Coreco fault code below. Each one is grounded in Coreco's own service documentation — the meaning, the symptoms, the causes, and the steps to clear it.

By Nichita Herput

Co-founder & CEO · Reviewed July 2026

Working on a Coreco unit? The complete Coreco code pack in your inbox — free.

Coreco sits in our Refrigeration coverage. Every page here is transcribed from the manufacturer's manuals, not scraped from forums.

What error codes does Coreco display?

Tap a code for the full breakdown — meaning, symptoms, causes, and fix steps.

Control probe (probe 1) error — signal interrupted, short-circuited or incompatible probe

Evaporator / defrost probe (probe 2) error — signal interrupted, short-circuited or incompatible probe

Condenser / product probe (probe 3) error — signal interrupted, short-circuited or incompatible probe

Immediate or delayed alarm from the multifunction digital input (external alarm)

dOr

Open-door alarm from the door-switch digital input

Low-temperature alarm — measured temperature below set point by more than parameter AL

High-temperature alarm — measured temperature above set point by more than parameter AH

Unit parameter reading (data) error — saved configuration data error

Operating parameter reading (data) error — manual reset

Defrost ended by timeout — last defrost stopped on maximum duration, not on temperature

Defrost running — status message shown during a defrost cycle (not an alarm)

CHt

Dirty-condenser warning/alarm — pre-alarm (cht) between Ac-AE and Ac, then alarm (CHt) when Ac is exceeded and refrigeration stops (manual reset)

EtC

Internal clock (RTC) alarm — clock fault; reset by setting the time

Dixell XW controller — room (thermostat) probe failure

Dixell XW controller — evaporator probe failure

Dixell XW controller — third (configurable/display) probe failure

Dixell XW controller — fourth probe failure

Dixell XW controller — high-temperature alarm

Dixell XW controller — low-temperature alarm

HA2

Dixell XW controller — condenser high-temperature alarm

LA2

Dixell XW controller — condenser low-temperature alarm

Dixell XW controller — door-open alarm

Dixell XW controller — external alarm (digital input)

Dixell XW controller — serious external / pressure-switch alarm

rtC

Dixell XW controller — real-time-clock alarm (RTC models)

rtF

Dixell XW controller — real-time-clock board failure (RTC models)

noP

Dixell XW controller — no parameter / probe not enabled (display message)

LOC

Dixell XW controller — keyboard locked (display message)

Carel KDT-Touch controller — Keypad-to-power-board communication error

Pb7

Carel KDT-Touch controller — On an RTX-RTN-RTD600 (/V) family power board, the E7 keypad-communicat

Carel RTN400 controller — Probe Pb3 faulty (measured values outside operating range or probe fau

Carel RTN400 controller — Probe Pb4 faulty (measured values outside operating range or probe fau

Carel RTN400 controller — Probe Pb5 faulty (measured values outside operating range or probe fau

Carel RTN400 controller — LINK2 probe faulty (measured values outside operating range or probe f

Carel RTN400 controller — VIRTUAL probe faulty (measured values outside operating range or probe

AH1

Carel RTN400 controller — HIGH temperature alarm 1

AL1

Carel RTN400 controller — LOW temperature alarm 1

AH2

Carel RTN400 controller — HIGH temperature alarm 2

AL2

Carel RTN400 controller — LOW temperature alarm 2

OPd

Carel RTN400 controller — Door-open alarm

Ad2

Carel RTN400 controller — End-defrost-by-timeout alarm

Prr

Carel RTN400 controller — Preheat alarm

E10

Carel RTN400 controller — Clock Alarm

HiP

Carel RTN400 controller — HIGH voltage alarm

LoP

Carel RTN400 controller — LOW voltage alarm

nPA

Carel RTN400 controller — General pressure switch alarm (n < PEn, Auto Reset)

LPA

Carel RTN400 controller — Minimum pressure switch alarm (n < PEn, Auto Reset)

HPA

Carel RTN400 controller — Maximum pressure switch alarm (n < PEn, Auto Reset)

Carel RTN400 controller — General pressure switch alarm (n = PEn, Manual Reset)

Get the complete Coreco error-code pack by email

Every Coreco code, meaning and first checks in one document you can save, print or forward. Free.

Common questions about Coreco equipment

Other Refrigeration brands we cover

AskWhiz documents error codes for these manufacturers in the same vertical:

3M Accurex AHT Cooling Systems AKO Alco Controls Alfa Laval Arneg Aspera BAC Bitzer Bock Carel