
Watlow Controls 5 EHG SL10 User’s Guide
EHG SL10 Error Codes
Display Description Possible Cause Corrective Action
[SL1]
Limit error Sensor has exceeded SLA value or
open thermocouple
• Set SLA to correct Safety
Limit Value
• Check wiring of sensor
• Check sensor confi guration
[SL2]
Control error Sensor has exceeded SLA value or
open thermocouple
• Set SLA to correct Safety
Limit Value
• Check wiring of sensor
• Check sensor confi guration
[Er3]
Limit Sensor Error Limit sensor reading out of range (<
-13 or > 640)
• Check wiring of sensor
• Check sensor confi guration
[Er4]
Control Sensor Error Control sensor reading out of range
(<-13 or > 640)
• Check wiring of sensor
• Check sensor confi guration
[Er5]
Limit Ambient Error Temperature at limit sensor cold junc-
tion (> 185 degrees)
• Check to be certain the EHG
SL10 is not in an ambient
condition greater than 185
degrees C
[Er6]
Control Ambient Error Temperature at control cold junction
(> 185 degrees)
• Check to be certain the EHG
SL10 is not in an ambient
condition greater than 185
degrees C
[ER9]
HMI Communications
Fault
Loss of communication between base
and display communications module
• Check connection between
EHG SL10 and display/com-
munications module
[Ahi]
Alarm High Process temp exceeds set point by
value greater than alarm high setting
• Set HTA value to correct high
temperature alert value
[Alo]
Alarm Low Process temp below set point by value
greater than alarm low setting
• Set LTA value to correct Low
temperature alert value
[E91]
Communications Queue
Full
Communications buffer overfl ow, re-
turn to factory
• Contact Technical Support at
1-507-494-5656
[E10]
EEPROM Error EEPROM memory space fails CRC
check (checksum for parameter space),
return to factory
• Contact Technical Support at
1-507-494-5656
[E11]
CRC Error Flash memory space fails CRC check
(checksum for program space), return
to factory
• Contact Technical Support at
1-507-494-5656
[E12]
CPU Clock Error Clock frequency is < 5 MHz or > 13.1
MHz, return to factory
• Contact Technical Support at
1-507-494-5656
[E13]
Stack Overfl ow Stack has overfl owed, return to factory • Contact Technical Support at
1-507-494-5656
[E15]
AI Function Error Analog reference is < 1.82 or > 2.06
volts, return to factory
• Contact Technical Support at
1-507-494-5656
[E16]
Process Comparison
Error
Limit and control sensor readings
differ by value greater than process
comparison value
• Check setting of Proces Com-
parison Value
• Set Process Comparison Value
to correct value
• Check wiring of sensors
[E17]
Data Store Error Data store functions are not set up,
return to factory
• Check setting of Proces Com-
parison Value
• Check wiring of sensors
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