Sentry Industries Sentry 2.0 Non-Interrupting Error Messages, Terminating Error Messages

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Chapter 7

Error Messages

Error messages are accompanied by an alarm.

Non-interrupting messages do not stop the firing. Ter- minating error messages do.

FTC, FTH, LTdE, and HTdE error messages are based upon the setting in the Temperature Deviation (TEdE) option. See page 20.

For detailed diagnostics and maintenance, see “Sentry Trouble Shooter,” a separate publication.

Non-Interrupting

Error Messages

Press ENTER to silence the alarm. (Do not press stop to silence the alarm.) The error message will remain but the kiln will continue firing.

FTC / Failed to Cool

During a cooling ramp, the kiln cannot cool as quickly as programmed. The temperature is above the deviation setting. (See Temperature Deviation, page 20.)

Program a slower cooling rate.

FTH / Failed to Heat

During a heating ramp, the kiln cannot heat as quickly as programmed. The temperature is below the deviation setting. (See Temperature Deviation, page 20.)

Check for worn or burned out elements, defective relays, low voltage and defective thermocouple. Program a slower rate.

LTdE / Low Temperature Deviation

During a ramp or a hold, the temperature is below the de- viation setting.

Check for worn or burned out elements, defective relays, low voltage and defective thermocouple.

PF / Power Failure

PF alternating with normal display means the power failed during firing. After power was restored, the firing re- sumed.

Terminating Error

Messages

BAdP / Bad Programming

This message appears when a Ramp-Hold firing has been programmed with 0 rate in the first segment.

ETH / Electronics Too Hot

The circuit board temperature is above 185°F/85°C.

Open windows and use a fan to circulate air in the room before firing the kiln or furnace. If you have more than one kiln in the room, place them farther apart. Never allow the firing room temperature to exceed 110°F/43°C. (Measure room temperature three feet away from the kiln.)

FAIL / Thermocouple Failure

Defective Thermocouple

Disconnected Thermocouple Lead Wires

Defective Board

Electrical Noise

FTL / Firing Too Long

The temperature rise is less than 27°F/15°C per hour and the firing time is four hours longer than the current seg- ment was programmed to fire.

Check for worn or burned out elements, defective relays, low voltage and defective thermocouple.

HTdE / High Temperature Deviation

During a ramp or a hold, the temperature is above the de- viation setting.

Check for a stuck relay.

PF 2 / Power Failure

The power failed. The kiln temperature was below 212°F/100°C when the power came back on.

The kiln will not resume firing.

PF 3 / Power Failure

This message appears when two conditions are met:

1The power failed during the final segment of a Cone-Fire firing. Or, the power failed during the fi- nal segment of a Ramp-Hold firing that included a 108°F/60°C rate in the final segment.

2The temperature dropped 72°F/40°C while the power was off.

The kiln will not resume firing.

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Contents Standard Options Multiple Zone OptionsIntroduction Contents Thunder Storms and Power Surges SafetyRoom Temperature and Humidity Basic PointersFiring Completion Message How to Get IdLE to DisplayDisplay Lights Repeat FiringsKeys Options Key Cone Numbers Skip SegmentEnter/Start Stop/Back KeyPyrometric Witness Cones How to Position Cones on the ShelfCone-Fire Firing SchedulesSpeed SPd Cone-Fire FeaturesPre-Heat Prht Hold HOLd Cone-Fire ProgrammingMirror Test For Kilns with AOP Outlet When the Kiln Shuts Off Too SoonSlow Cooling Cool Wrong Thermocouple TypeRamp-Hold Definition of a SegmentRamp-Hold Programming User Programs UserAOP Fan Firing a Stored User ProgramRate Segments for Controlled CoolingGlass Slumping Firing Schedule Glass Fusing Firing ScheduleStarting a Firing in a Hot Kiln Ceramic FiringsMultiple Zone Kilns Cone-Fire Speed Spd OptionsCone-Fire Options Cone Offset OfstFan FAN General OptionsThermocouple Offset Tcos Selecting F or C CHG Thermocouple Type TCElectronics Temperature Elec Temperature Deviation TedeMaximum Temperature Sfty AOP Outlet AOPMultiple Zone Options Non-Interrupting Error Messages Error MessagesTerminating Error Messages TCdE / Uneven Multiple Zone Temperatures How the Sentry Handles Power FailuresPlog Error Codes TCR / Thermocouple Leads ReversedAppendix a Display Messages Reset Power FailureDiagnostic Test Failure SafetySegment Low Fire Cones FCone Rate 1 Temp Rate 2 Temp Appendix B Preset Standard Cone-Fire Schedules C Low Fire Cones CAppendix C Upgrading Instructions Upgrading the DTC 100, 600, 800 & 1000 to the SentryPage 010 Cone Self-Supporting Cones Pre-Fire Number Color022 05 1/2Sentry Ramp-Hold Shorthand Instructions Appendix EKiln is now firing. Use Program Review by pressing Sentry Cone-Fire Shorthand Programming Appendix FKiln is now firing to the cone you selected

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