Impulse DO4837R Benutzerhandbuch

R

24 

Air probe has failed. 

Defrost termination or product probe has failed. 

Low temperature alarm. 

High temperature alarm. 

Defrost timeout has occurred (did not terminate correctly). 

Controller is in defrost mode (not and alarm). 

 
Interface  -  The ESC3 features a 3 digit LED display that shows the case 
temperature. Alternately, the display can be configured to display the product 
temperature if a product temperature probe is connected. The temperature 
can be displayed in either 

0

C or 

0

F. 

Alarm Key  -  The Alarm key illuminates when the controller has detected an alarm condition. 
This key is also used to reset an alarm condition and to enter the setup mode (allowing set 
points to be changed). 

 
Compressor Key  -  The Compressor key  illuminates when the compressor output is on. 
When the ESC3 is in setup mode, this key is used to select a set point to be modified and to 
change the value of the set point. 

 

Defrost Key  -  The Defrost key illuminates when the ESC3 is in defrost mode. Press the de-
frost key for 5 seconds to go into manual defrost mode. The key is also used in setup mode 
to select a setpoint to be modified and to change the value of the set point. 
 

Alarm Operation  -  The ESC3 has several alarm functions. In addition to alarms based on air tem-
peratures, it will alarm if a probe failure is detected. 
 

 

Indications on the Display 
If the defrost, or compressor key blinks.  It means that the corresponding function is delayed by a tim-
ing routine or inhibited.