Rohde ST 630, Руководство по эксплуатации

Страница: 82 / 344

80 / 341 - EN -
9.3. General error messages
Display Description Cause of error / Troubleshooting
ERROR: 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
ERROR: 2
Thermocouple or wiring for thermocouple
disconnected.
•
Get thermocouple and wiring
checked.
•
Replace thermocouple if necessary.
ERROR: 3
Thermocouple with reversed polarity.
•
Kiln temperature apparently below
-40°C
•
This is an installation fault.
• Get wiring checked.
ERROR: 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.
ERROR: 5
Set kiln temperature exceeded.
The kiln temperature has exceeded the
desired temperature by a preset limit.
⇒ The contactor is not working
(contactor hanging).
⇒ Replace contactor
ERROR: 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.
ERROR: 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
ERROR: 8
Internal data conversion circuit (ADC) error
Please contact your local specialist or
ROHDE Service.
ERROR: 9
Only applies to multi-zone kilns:
The maximum permissible temperature difference
between two heating zones has been exceeded.
The temperature difference between
heating zone 2 or 3 and heating zone 1
has exceeded the preset limit of 30°C.