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Problem
Probable Cause
Etun
Auto tune cannot be performed.
A change made to a parameter takes a finite time to be
entered. If the power to the controller is turned off before
EConF
the change has been entered then this alarm will occur.
Do not turn the power off to the controller while EConF
is flashing.
ECAL
Calibration error.
E2.Er
EEPROM error.
EE.Er
Non-vol memory error.
Invalid input type. This refers to custom linearization
E.Lin
which may not have been applied correctly or may have
been corrupted.
The furnace is not connected to the power supply.
The controller
Main switch is defective.
displays do not
illuminate.
Fuse(s) blown.
S.Br
Thermocouple open/broken .
1500°C Tube Furnace
Troubleshooting
WARNING : Troubleshooting procedures involve working with high voltages which
can cause injury or death. Troubleshooting should only be performed by a qualified
technician.
This section is a guide to troubleshooting furnace problems.
Table 6 Controller Troubleshooting for 3504 & 3216p
Solution
Note the error and contact your supplier.
Enter configuration mode then return to the required operating
mode. It may be necessary to re-enter the parameter change
since it will not have been entered in the previous configuration.
Re-instate Factory calibration.
Return to factory for repair.
Note the error and contact your supplier.
Go to the INPUT list in configuration level and set a valid
thermocouple or input type.
Check furnace connection to power source.
Replace power switch or controller. This should be done by
trained technician.
Replace fuse(s) and verify power connections. Contact your
supplier.
Replace the thermocouple or contact your supplier for
thermocouple replacement.
Troubleshooting |
Chapter 11
305435H03 | 11-89
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