Coreco dF Error Code
Defrost running — status message shown during a defrost cycle (not an alarm)
Source: Coreco_easy_compact_eng_termostatos.pdf
What does Coreco dF mean?
On the Coreco controller (Carel easy / easy compact), dF means a defrost is running. This is not an alarm signal but a message that the instrument is performing a defrost; the buzzer and alarm relay are not activated. It is only shown when parameter d6=0, where the display alternates dF with the control-probe temperature, and it resets automatically when the defrost ends.
Symptoms
- Display shows dF alternating with the temperature
- Appears only when parameter d6=0
- No buzzer and no alarm relay activation (it is not an alarm)
- Compressor/heater behaviour follows the defrost cycle
- Message ends automatically when the defrost finishes
Common causes
- A defrost cycle is in progress (normal operation)
- Scheduled defrost started by interval (dI) or time band
- Manual defrost started from the keypad or digital input
- Defrost on power-up (parameter d4=1)
- Parameter d6=0, which enables display of the dF message during defrost
Ask the AskWhiz AI about Coreco dF
AskWhiz
online
Diagnostic steps
Recognise it is normal
dF is not an alarm — it simply indicates the instrument is running a defrost, shown only when d6=0.
Let the defrost finish
Allow the defrost cycle to complete; the dF message ends automatically and the temperature display returns to normal.
Adjust the display if preferred
If you would rather freeze the temperature display during defrost instead of seeing dF, set parameter d6=1 so the last temperature is held.
Confirm defrosts complete correctly
Watch that the cycle ends on temperature rather than timing out (which would instead raise the Ed message).
When to call a professional
dF on its own is normal and needs no service. Involve a qualified refrigeration technician only if defrosts run far too often, fail to clear ice, or are accompanied by alarms such as Ed or E1, since diagnosing the defrost circuit and probes involves the cabinet's electrical and refrigeration systems reserved for qualified personnel.
Stop searching through PDFs. Our AI assistant on WhatsApp is trained on official Coreco documentation and can diagnose this fault code and guide you through the repair in minutes.
5 free questions per bot in your browser — no signup.
Other Coreco Error Codes
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)
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
Dirty-condenser warning/alarm — pre-alarm (cht) between Ac-AE and Ac, then alarm (CHt) when Ac is exceeded and refrigeration stops (manual reset)
Internal clock (RTC) alarm — clock fault; reset by setting the time