Problem: Err 4 Message
Probable Causes:
■
Stuck Relay
■
Defective Controller
Err4 is the same as Err2 except temperature rises 50°
above a Ramp temperature instead of a Hold temperature.
Problem: Err 6 Message
Probable Cause:
■
Thermocouple Leads Hooked Up Backwards
■
Room Temperature Below 0ºF or 0ºC
■
Board Damaged by Static Electricity
UNPLUG kiln and remove the controller from the switch
box. If the yellow and red wires are attached to the incorrect
terminals (see diagram on page 22), reverse the wires. Rein
-
stall the controller.
If room temperature is below 0ºF or 0ºC, raise tempera
-
ture.
Perform the paperclip test described under “FAIL Mes
-
sage,” page 18. When the paperclip is in place, the board
shouldshowroomtemperature.Ifitshowsanegativenumber,
replace or repair the board.
Problem: Err 8 Message
Probable Cause:
■
Burned out element or loss of power to elements
■
Defective relay
■
The Kiln Sitter® shut off (applies to TnFII models)
Err8 appearswhenthe temperature dropsfor 18seconds
during the last phase of firing in Cone-Fire.
When Err8 appears,press1.Thedisplaywillshowthelast
temperaturethekilnreachedandthehoursfiredbeforeitshut
off. Then it will go back to IdLE . See page 16, “Controller
Display Lights Up Normally, Some or All Heating Elements
Do Not Fire” and “Element Glow Test,” page 15.
Problem: Err A Message
Probable Cause:
■
Software Error
ErrA indicatesanerrorinsoftware,usuallywiththecom
-
puter-connected version of the DTC 1000. ErrA can be
caused by random electrical noise. Reprogram the controller.
If the error returns, return the board for servicing.
Problem: Err B Message
Probable Cause:
■
Circuit Board Temperature above 250° F.
■
Defective Board
■
Electrical Noise
If the causeis a hotcircuit board, openwindows and usea
fan to circulate air in the room before firing the kiln or fur
-
nace. If you have more than one kiln in the room, place them
farther apart. Never allow the firing room temperature to ex
-
ceed 110°F/43°C. (Measure room temperature at least three
feet away from the kiln.)
If ErrB persists when the circuit board temperature is
normal, replace the board.
Problem: Err d Message
Probable Causes:
■
Stuck Relay
■
Electrical Noise
■
Over-Shoot During Low Temperature Firing
Errd appears when the temperature is more than 100°F
above the programmed temperature. It can occur during a
rampor duringhold.Check relaysasdescribed onpages15 &
16.
Ifyoufiretoaround300°F/149°C, Errd mayappeardueto
a temperature over-shoot. Fire at a slower rate.
Problem: Err E Message
Probable Cause:
■
Defective Controller
The controller detected a defective component onthe cir-
cuit board. Replace the board.
Problem: Err H Message
Probable Cause:
■
Defective Controller
Thecontrollerdetectedanerrorinaself-diagnosticcheck.
If the error persists, replace the board.
Problem: Err t
Probable Cause:
■
Memory Chip Defective
The write cycle to the non-volatile memory chip took too
long. Have controller serviced.
Problem: Err -
Probable Cause:
■
Power Loss During Processing
Therewasapowerlosstothecontrollerwhilesendingdata
toamemory chip.Use“ProgramReview”tobesure yourpro
-
gramis stillinmemory. Ifyou getan Err - regularly,thecon
-
troller may need servicing.
Problem: StUC Message
Probable Causes:
■
Stuck Key
■
Solder Joint Failure
Return the controller for servicing.
19
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