when you make the connection. If there is no click, the relay is
probably defective. Make sure your battery is good before assum
-
ing the relay is bad.
2 Touch ohmmeter lead wires to relay terminals marked #1 and #2
in the diagrams. With the battery still connected, you should get a
continuity reading (0 ohms) on the ohmmeter. (This is the same
reading you would get if you touched the ohmmeter leads to
-
gether.) If you get a no-needle movement when the battery is con
-
nected, replace the relay. Place the ohmmeter wires on relay ter
-
minals marked 3 and 4 on the diagrams and test the same way.
3 If the ohmmeter reading at terminals #1 and #2, and then #3 and
#4, is 0 ohms when the battery is removed, the relay contacts are
stuck. Replace the relay.
If the relays are okay and the elements turn on when you reconnect the controller wires to the relays, replace the con
-
troller.
Err 3
I
Did you leave the lid or door open?
Err3 appears when the temperature falls more than 50° below the Hold temperature during a Hold segment.
I
Test elements and relays.
See “Kiln fires too slowly or will not reach temperature,” page 6.
Err 4
I
See Err2.
Err4 is the same as Err2 except temperature rises 50° above a cool-down Ramp temperature instead of a Hold
temperature. If the last segment of your firing is a cool-down, an Err4 means your kiln fired to maturity, then be-
came too hot during the cool-down.
Err 6
I
Are the thermocouple lead wires hooked up correctly?
UNPLUG kiln and remove the controller from the switch box. Make sure the yellow and red wires are attached to
the correct terminals (see diagram, page 1). If the wires are reversed, the controller will show temperature going
down when it should be going up.
I
Are you experiencing cold weather?
If room temperature is below 0ºF or 0ºC, raise temperature.
I
Test the board with a paperclip.
Perform the “Controller Paperclip Test” described under “FAIL,” page 13. When the paperclip is in place, the
board should show room temperature. If it shows a negative number, replace or repair the board.
Err 8
Err8 appears when the temperature drops for 18 seconds during the last phase of firing in Cone-Fire. See “Kiln
fires too slowly or will not reach temperature,” page 6, and “Some elements do not fire,” page 8.
I
Did the Kiln Sitter® shut off?
This applies to the TnF2 controller that is powering a kiln with a Kiln Sitter.
Err A
I
Software Error
Reprogram the controller. If the error returns, have the controller repaired.
15
Testing a relay with a 12 volt lantern battery.
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