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15
DESCRIPTION OF THE MAIN SIGNALS AND ALARMS
LED FLASHING
The activation of the corresponding function is delayed by
a timer, awaiting an external signal or disabled by another
procedure that is already in progress. e.g. if is a continuous
cycle in progress and a defrost is called, the latter will
remain pending until the end of the continuous cycle, and
the corresponding LED (defrost) will flash.
E0 STEADY OR FLASHING
Control probe error:
■ Probe not working: the probe signal is interrupted or
short-circuited;
■ Probe not compatible with the instrument;
The alarm signal E0 is steady if it is the only active alarm
(the temperature value is not displayed), while it fl ashes if
other alarms are active or the second probe is displayed.
E1 FLASHING
Evaporator probe or food conservation probe error:
■ Probe not working, the probe signal is interrupted or
short-circuited;
■ Probe not compatible with the instrument;
E2 FLASHING
Condenser probe or food conservation probe error:
■ Probe not working, the probe signal is interrupted or
short-circuited;
■ Probe not compatible with the instrument;
IA FLASHING
Immediate or delayed alarm from multifunction
digital input:
■ Check the multifunction input and parameters A4
and A7.
LO FLASHING
Low temperature alarm. The probe has measured a
temperature lower than the set point by a value that
exceeds parameter AL:
■ Check parameters AL, Ad and A0.
The alarm is automatically reset when the temperature
returns within the set limits (see parameter AL).
HI FLASHING
High temperature alarm. The probe has measured a
temperature higher than the set point by a value that
exceeds parameter AH.
■ Check parameters AH, Ad and A0.
The alarm is automatically reset when the temperature
returns within the set limits (see parameter AH).
EE DISPLAYED DURING OPERATION OR ON POWER-UP
Unit parameter reading error. See Data errors.
EF DISPLAYED DURING OPERATION OR ON POWER-UP
Operating parameter reading error. See Data errors.
ED FLASHING
The last defrost ended after exceeding the maximum
duration rather than when reaching the end defrost
set point.
■ Check parameters dt, dP and d4;
■ Check the eciency of the defrost.
The message disappears when the next defrost ends
correctly.
DF FLASHING
Defrost running:
■ This is not an alarm signal, but rather a message that
the instrument is running a defrost. Only shown if
d6= 0.
CHT FLASHING
Dirty condenser alarm:
■ Check parameters A4, Ac, AE and Acd.
ETC FLASHING
Internal clock error.
DATA ERROR
In certain operating conditions, the instrument may detect
errors in the data saved. These errors may compromise
the correct operation of the instrument. If the
microprocessor detects a data saving error, the display
shows the message “EE”.
If the fault persists, the controller needs to be replaced.
If, on the other hand, the message disappears, it can
continue to be used. When “EE” error occurs frequently
and/or remains for some time, the controller should be
checked, as the original precision may not be guaranteed.
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