Sterling 350-2100 CFM Manuel D’Utilisation

350-2100 cfm Dryers 

Chapter 6: Maintenance 

46 of 58 

 

 
 
 

 

Message 

Cause 

Control Output 

Alarm Output 

 

 

With output unit 

other than current 

output unit 

With current output unit 

 

 

 

Input temperature 
has risen beyond the 
upper limit of the 
temperature range 
by more than 20

°C 

[68

°F] 

c

 

OFF during 
reverse (heating) 
action, ON during 
normal cooling 
action. 

4 mA during reverse 
(heating) action, 20 mA 
during normal (cooling) 
action. 

 
Issues alarm 
outputs in 
accordance with the 
set alarm mode.  

 

 

Input temperature 
has fallen below the 
lower limit of the 
temperature range 
by more than 20

°C 

[68

°F] 

d 

 

ON during reverse 
(heating) action, 
OFF during 
normal (cooling) 
action. 

20 mA during reverse 
(heating) action, 4 mA 
during normal (cooling) 
action. 

 
Issues alarm 
outputs in 
accordance with the 
set alarm mode.  

 

 

The thermocouple 
has burned out or 
the short circuit bar 
has been removed. 
The platinum RTD 
has burned out or A 
and B have been 
short circuited. 

 
 
 

OFF 

 
 
 

Approximately 1 mA 

 
Issues alarm 
outputs in 
accordance with the 
set alarm mode. 
Proportional alarm 
output is OFF 

 

 

 

 

[FLASHES] 

Memory failure 
(E111) or analog to 
digital converter 
failure (E333) has 
occurred. 
Temperature 
controller must be 
repaired if recovery 
is not made by 
turning power off 
once and on again. 

 
 
 
 
 

OFF 

 
 
 
 
 

Approximately 1 mA 

 
 
 
 
 

OFF 

 
c

 When a type J thermocouple is used, this error message is not displayed until the temperature has risen above the normal operating 

temperature operating range by more than 70

°C [158°F]. 

 

d

 When a platinum RTD sensor is used, this message is displayed when the temperature has fallen to -99.9

°C [-147.82°F].