Kiln
Support

Power failure. Firing has stopped

Power was lost during a firing and the kiln temperature was below 1400F or the kiln temperature dropped more than 250 degrees during the power outage.

Key was held too long or is stuck

If problem persists after releasing key, controller may need to be returned to the factory for keypad replacement.

Steady FAIL indicates all t/c’s have failed. If FAIL alternately flashes with TC 1, then t/c one (top section) has failed. If FAIL alternately flashes with TC 2, then t/c two (middle section) has failed. If FAIL alternately flashes with TC 3, then t/c three (bottom section) has failed.

Check the board temperature in the Menu. If board temp displayed with bd T is approximately room temperature, then the t/c is defective. If bd T display shows a high temperature or FAIL without showing room temperature, circuit board is defective.

ERRP and the current temperature are alternately flashing. To clear the display, press the “1” key. The firing in progress will continue.

Power outage; kiln is still firing.

Invalid 16-segment firing attempted

Reprogram and restart firing.

Microprocessor memory does not match program storage memory (EEprom)

Reprogram and try to fire again. If error persists, controller may need to be returned to factory for service.

Hardware error

Controller will need to be returned to the factory for service.

Board temperature too high

The control box temperature may be too hot or the limit temperature may need to be reset. If the room temperature is very hot, aiming a fan at the control box may decrease the temperature.

Invalid program variable

Reprogram all eight segments of the program being fired. If error persists, controller may need to be returned to factory for service.

Power loss during EEprom write

Turn the controller off and back on. Recheck the selected program and reprogram, if necessary.

Software thermocouple selection does not match the hardware thermocouple jumper selection

The jumper on the circuit board and the setting for thermocouple TYPE in the software do not match.

In cone fire mode, temperature decreasing in last segment

If the kiln has a kiln-sitter, it may have turned the kiln off before the controller did. Other possible causes are broken element or relay failure.

Problem with thermocouple leads

This generally indicates the thermocouple is connected incorrectly, possibly reversed. Ensure the thermocouple extension wires are connected correctly to the controller and at all connection blocks back to the thermocouple.

Software Error

Check the selected program and reprogram, if necessary. If error persists or program does not hold in memory, controller may need to be returned to factory for service.

Kiln temperature 50 degrees F above traveling set point

Stuck relay or stuck output. If using zone control, then the outputs or t/c's may be in the wrong zones.

Error in readings

Check for reversed thermocouple leads. If leads are correct, then the analog to digital converter on the circuit board may not be functioning and the controller may need to be returned to the factory for service.

Kiln temperature 50 degrees F below traveling set point when ramping down

Relay failure.

Kiln temperature 50 degrees F above previous hold when ramping down

A relay latched in the on position may cause this error. Another possible cause is if the kiln lid is opened for rapid cooling, then closed, such as for glass firings.

Kiln temperature 50 degrees F below hold temperature

Relay failure.

Kiln temperature 50 degrees F above hold temperature

A relay latched in the on position may cause this error. Another possible cause is if the kiln lid is opened for rapid cooling, then closed, such as for glass firings.

Kiln temperature increasing slower than 12 degrees F per hour when ramping up

This is a kiln heating problem, not a controller problem. Do the Full Power Test to check elements and relays. Low or dropping voltage to the kiln could also be the cause. A thermocouple reading incorrectly or improperly placed may also be the cause.