Rohde ST 410 - Error Messages; General Description of Error Messages; Error Message Display; Reading Error Messages

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9.4. General error messages
Display Description Cause of error / Troubleshooting
Err. 0
Internal data error
The controller cannot be repaired on site and
must be sent to the manufacturer for repair.
Err. 1
 Heating error.
 The kiln temperature is not increasing as
required.
 The kiln has been on full power for 15 minutes,
but the temperature has not increased by at
least 2°C.
 Kiln door or lid not completely closed.
 Defective door switch
 Door switch needs to be adjusted.
 Heating element circuit open
 Heating elements too old
 Electrical power phase failure
 Contactor failure
Err. 2
Thermocouple or wiring for thermocouple
disconnected.
 Get thermocouple and wiring checked.
 Replace thermocouple if necessary.
Err. 3
Thermocouple wired incorrectly
 Kiln temperature apparently below
-40°C
 This is an installation fault.
 Get wiring checked.
Err. 4
 Cooling error
 The kiln has been on zero power for 30
minutes, but the kiln temperature has not
fallen by at least 1°C.
 Contactor failure
(contacts possibly welded)
 Thermocouple disconnected or resistance
too high.
Err. 5
Set kiln temperature exceeded.
Desired temperature Permissable excess
below 100 °C + 60 °C
over 100 °C, below 200 °C + 50 °C
over 200 °C, below 600 °C + 30 °C
over 600 °C + 20 °C
 The kiln temperature has exceeded the
desired temperature by a preset limit.
 The cause of the excess temperature must
be determined.
 The contactor is not working (contactor
hanging/replace contactor).
Err. 6
The maximum duration of the firing process
exceeded.
The duration of the firing process exceeds a limit
value set in the factory.
 Deactivated at the factory.
 If you want to set a maximum firing time,
please contact ROHDE Service.
Err. 7
The maximum room temperature exceeded.
 The internal temperature of the controller
has exceeded a factory-set limit value.
 Factory set to 50°C.
 Possible causes:
 insufficient or incorrect ventilation of the
kiln
 operating location too small
 ventilation grille blocked
 exhaust air flap not closed
 controller mounted too close to the kiln
Note:
 Each of the listed error messages leads to the termination of the firing process.
 Terminating the firing process protects the kiln from damage.
 The alarm buzzer will sound once per second.
 To reset the controller, turn off the power to the device and have the fault investigated and rectified by your
installer or kiln service engineer.