Skutt KilnMaster Kilns Manufactured between 2000 and 2006 - Manual (Page 42)

Error and description
1 Ramping up and rate is less than 12˚ per
hour. Rise is checked every 7.5 minutes.
Rate must persist for 22.5 minutes before
display.
2 Program in hold, temperature 50˚ or
more above hold temperature. Error
must persist for more than 18 seconds
before error is triggered.
3 Program in hold, temperature 50˚ or
more below hold temperature. Error
must persist for more than 18 seconds
before error is triggered.
4 Program ramping down and tempera-
ture more than 50˚ above last hold tem-
perature. Error must persist for more
than 18 seconds before error is triggered.
5 Program ramping down and tempera-
ture more than 50˚ below local set point.
Must persist for 18 seconds to trigger.
6 Negative reading detected at thermo-
couple, indicating it is wired improperly.
7 Ramping up and temperature 50˚ above
local set point.
8 Controller in positive ramp, kiln temper-
ature is ramping down. Negative rate
must persist for 22.5 minutes to trigger
error.
FAIL System cannot sense thermocouple. 40
A PPENDIX 4
Error Messages
The following errors may appear in the
window of your controller. Along with
the error number, the display indicates
elapsed time in hours and minutes and
also the temperature the kiln reached
when the error occurred. Please call your
distributor or Skutt Ceramic Products at
(503) 774-6000.
In addition to the error messages in the
chart at right, all of which indicate a prob-
lem which needs to be corrected, their is
an informational error message: ErrP.
When it flashes, a brief, non-critical power
outage has occurred. The controller was
able to resume firing and the load of ware
is not in danger. It continues to alternately
display with the internal temperature until
you press Enter.
Possible cause
Kiln-sitter has tripped. Limit timer has
expired. Elements are weak. Load is
heavy. Relay failed. Low voltage.
Excessive heating rate going into the
hold. One or more relays are stuck in
the closed position.
Kiln cannot maintain temperature to
reach hold. Lid opened during firing.
Elements may be weak.
Relays may be stuck closed (failed
closed).
Normally kiln will have plenty of
power to maintain a cooling rate. Was
lid opened? Elements failing?
Thermocouple wires have been
switched. Somewhere lead wires have
been crossed.
Possible relay failure in the closed posi-
tion.
On Wall-Mount KM-1, The Kiln-Sitter
may have tripped or timer depleted
and turned Kiln-Sitter off.
Thermocouple broken or disconnected.
Correction
Place one cone hotter in Kiln-Sitter.
Add time to limit timer. Check ele-
ments. Reduce size of load. Check
relays. Check voltage.
Reprogram lower heating rate. Turn
Off and unplug. Check resistance at
plug with ohmmeter.
Do not open lid during firing. Check
elements with ohmmeter.
Turn Off and unplug. Check circuit at
plug with ohmmeter.
Do not open lid until the kiln has
reached at least 500˚ F. Check ele-
ments.
Check and fix any backward connec-
tions.
Turn Off and unplug. Check relay.
Use hotter cone in Kiln-Sitter. Add
more time to limit timer.
Secure or replace thermocouple.