User guide

15-10 Heaters
Heater Troubleshooting
This section is designed to help you identify and solve minor heater related problems you might encounter
during a production run. Use the table below to identify the symptom and possible cause of the problem,
then follow the recovery procedure to solve the problem. If you experience problems that are not included
in the table below, or if the suggested recovery does not solve the problem, please contact Asymtek
Technical Support.
Table 15-1 Heater Troubleshooting
Symptom Possible Cause Recovery
System is in Emergency Stop.
See the Safety section in this
manual for instructions on
Emergency Stop recovery.
Heater loops are not active.
Activate the heater loops. See
Testing Heater Loops above.
Set Point (SP) value is below
Process Variable (PV) value.
Change the SP value within the
Heater Control Window. Consult
the Online Help for assistance.
Integral value is too low.
Go to Heat Control tab in the
Heater Control dialog and
increase Integral value. Consult
the Online Help for assistance.
No power to the heaters. See Symptom number 2.
Heaters do not turn on.
Thermocouple connector on
heater module not plugged in.
Plug thermocouple connector into
heater module.
System is in Emergency Stop.
See the Safety section in this
manual for instructions on
Emergency Stop recovery.
Heaters are not active.
Activate the heater loops. See
Testing Heater Loops above for
instructions.
Zone sensor is not detecting the
part.
See “Checking Zone Sensor”
below.
No power to the heaters.
Fuse is burned out on the
Temperature Controller.
Call an Asymtek service
technician.