Rohde ST 310 Instrucciones De Uso página 69

7.4. Error messages
Display Description
Err. 0
Internal data error
Temperature increase too low despite
heating at full power:
• Kiln does not heat or heats too slowly
Err. 1
• 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.
Err. 2
Thermocouple or wiring for thermocouple
disconnected
Err. 3
Thermocouple with reversed polarity
Kiln cools down too slowly:
• Kiln does not cool down or cools down
Err. 4
too slowly.
•
The kiln has been on zero power for 30
minutes, but the kiln temperature has
not fallen by at least 1 °C.
Set kiln temperature exceeded:
Desired temperature
Below 100 °C
Err. 5
More than 100 °C but less
More than 200 °C but less
More than 600 °C
Err. 6
Maximum duration of firing process
exceeded
Err. 7
The maximum room temperature
exceeded
Overshoot allowed
+ 60 °C
+ 50 °C
than 200 °C
+ 30 °C
than 600 °C
+ 20 °C
Cause of error / Troubleshooting
Technical service required:
The controller cannot be repaired on site and
must be sent to the manufacturer for repair.
•
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
• Get thermocouple and wiring checked.
•
Replace thermocouple if necessary.
• Kiln temperature apparently below -40 °C
•
This is an installation fault.
•
Get wiring checked.
•
Contactor failure (contacts possibly welded)
• Thermocouple disconnected or resistance too
high
• The kiln temperature has exceeded the desired
temperature by a preset limit.
• The cause of the over-temperature must be
determined.
• The contactor is not working (contactor
hangs/replace contactor).
• The duration of the firing process exceeds a
limit value set in the factory.
• Notes on Error 6:
⇒ The error is disabled at the factory.
⇒ If you want to set a maximum firing time,
please contact ROHDE Service.
•
The internal temperature of the controller has
exceeded a factory-set limit value.
• Factory-set to 50 °C.
•
Possible causes:
­
Insufficient or faulty ventilation of the kiln
chamber
­
Operating location too small
­
Ventilation grille blocked
­
Exhaust air flap not closed
­
Controller mounted too close to the kiln
67 / 293 - EN -