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SOLL AT EK
INTELLIGENT CONTROL S
10
. E
RR
OR
S
&
F
A
U
LTS
10.1 SENSOR FAULTS
10.1.1 DOOR SWITCH FAILURE
•
Display
•
Activated when door is open for longer than (d1 + d2).
•
Door Open Indicator:
ON (solid)
•
Master Alarm Indicator:
ON (solid)
•
Main Display:
Toggling between “dOP” (Door Open) and “dSF” (Door Switch Failure).
•
FAN operation:
As per Duty Cycle defined in “Evaporator FAN Management”.
•
Unit resumes working normally (compressor coming ON when there is cooling demand) and evaporator fan
should cycle accordingly.
•
Unit switches to DAY mode if it was in NIGHT mode when the Door Switch Failure was observed.
•
Unit stops updating the learning matrix and will not switch to NIGHT mode due to learning algorithm, and once
the door switch is restored, then learning matrix will reset. However, pressing the ECO button for more 3 Secs will
still force the unit to toggle manually between DAY and NIGHT modes.
•
During Door Switch Failure, the lights remain always ON and cannot be switched OFF manually.
10.1.2 REGULATION PROBE FAILURE
•
Display
•
Master Alarm Indication:
ON (solid)
•
Main Display:
Toggling between “PF1” and the active set point
•
Compressor cycles ON/OFF according Duty Cycles on Delays and timers control items .If unit is in Winter Mode, it
will exit this mode back to normal mode and cycle the compressor according to Duty Cycles on Delays and timers
control items.
•
All other operations as nominal.
10.1.3 EVAPORATOR PROBE FAILURE
•
Display
•
Master Alarm Indication:
ON (solid)
•
Main Display:
Toggling between “PF2” and regulation temperature
•
All functions using the Evaporator Probe will be deactivated.
•
All defrost start and end temperatures (if enabled) will be disabled.
•
dF2 is not respected (Defrost function is not suspended even if regulation temperature above dF2).
•
All other operations as nominal.
10.1.4 CONDENSER PROBE FAILURE
•
Display
•
Master Alarm Indication:
ON (solid)
•
Main Display:
Toggling between “PF3” and regulation temperature
•
Controller resumes normal operation (condenser protection feature will be disabled)
10.1.5 AMBIENT SENSOR FAILURE
•
Display
•
Master Alarm Indication:
ON (solid)
•
Main Display:
Toggling between “PF4” and regulation temperature
•
Controller resumes normal operation
•
The Set Point values used are the programmed ones (not adding the offsets due to ambient conditions).
10.1.6 REFRIGERATION
SENSOR FAILURE
Refrigeration Failure Mode will be initiated if any of the following events take place:
•
Compressor has been running continuously for longer than “Cd6”
•
2 consecutive defrost cycles due to “Cd5”
•
Condenser temperature (when condenser probe is enabled and not faulty) exceeds “OH” over 3 consecutive
events
•
Condenser temperature (when condenser probe is enabled and not faulty) drops below “SC” over 3 consecutive
events
When the unit is in Refrigeration Failure Mode:
•
Compressor:
OFF
•
Evaporator FAN:
OFF