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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 effi ciency 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 pre-alarm:
• check parameters A4, Ac, AE and Acd.
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.
Summary of Contents for SMART 7 STI022LR404A2
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