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3. When power is restored, the temperature drop during the power interruption must
be less than 72ºF (40ºC). If not, the display will show the alarm code
PF 3
and
terminate the firing.
Status Display Codes
Below is a list of normal display codes which indicate the controller mode of operation.
IdLE
- This is ready mode; No firing in process. This message will alternate with the
temperature display and/or any alarm messages that may occur.
dELA
- This is the delay start mode. This message will alternate with the delay time
count-down if programmed.
Strt
- This is a final prompt before starting a new firing. The Delay start and
thermocouple offset features are accessed from this prompt.
-On-
- This is a short (5 second) display that indicates a new firing has been started.
StOP
- This is an Abort message; the firing was stopped early. This message will
alternate with the temperature display and/or any alarm messages that may occur.
CPLt
- This is a firing complete message; the firing ended successfully. This message
will alternate with the temperature display and the total firing time from start to finish.
-90-, -96-, bEAd, CLA, USr
- This is a short (5 second) display of the Program Mode
which appears every time the controller is turned on.
Alarm Display Codes
In addition to Power failure alarms, these messages may be displayed if the controller
detects a problem during the firing.
tC
- This alarm will appear when the kiln is idle and indicates that the thermocouple
sensor is no longer detected. The controller can not operate without a thermocouple
signal. In most cases, the thermocouple has failed and will need replacement, or the
electrical connections for the thermocouple may be loose or damaged. Check the wiring
for the thermocouple and the physical condition of the probe inside the firing chamber.
tCr
- This alarm indicates that the thermocouple sensor is detected but the signal is
reversed. The firing was terminated. The thermocouple signal is a low voltage direct
current with +/- polarity. The controller will sense that the temperature is traveling
backwards from what is expected. In most cases, this indicates that the thermocouple
needs to be reconnected properly. Check the wiring for the thermocouple.
FAIL
- This alarm will appear during an active firing and indicates that the
thermocouple sensor is no longer detected. The signal was lost during and the firing
was terminated. The controller can not operate without a thermocouple
signal. In most
cases, the thermocouple has failed and will need replacement, or the electrical connections for
the thermocouple may be loose or damaged. Check the wiring for the thermocouple and the
physical condition of the probe inside the firing chamber.
FtL
- This alarm indicates that the firing was taking too long to complete and the firing was
terminated. The controller monitors the deviation from the desired firing schedule as compared
with the actual firing results. There are 2 conditions for the
FtL
alarm.
