Tuttnauer ELARA11-D, Technicial Manual

Page: 135 / 176

Page 134
Symptoms
Possible causes Check-
ups and tests
Corrective Action
7. Faulty thermostat
8. Faulty cut-off
Power down
Power down has occurred
during the cycle.
If it happened before or during the
sterilization stage, repeat the
cycle. If power down happened
after the sterilization stage,
repeating the cycle is not
necessary, it’s up to the operator.
i/o card failed
The I/O card (connected to
the main through RS232
connector) is not
responding. Possible
causes:
1
Disconnection
between I/O board and Main
board.
2
I/O card is faulty
(both while cycle is running
or not).
1.
Check the connections.
2. Replace the control
system.
Analog input error
Pressure or temperature
sensor reports an out-of-
range digital value.
Locate the cause of the problem
as displayed in 9.7 under "View
Analog Inputs State" and check
the sensor that shows the value ”-
--
” .
Check the connections. If this
does not help, replace the faulty
sensor.
Door is open
During the cycle the door
switch indicates that the
door is open.
Possible causes:
Faulty or not adjusted door
switch or faulty door switch
itself. Check the door switch and its
connections.
Heat I/O
Pressure
Top exhaust valve doesn’t
open
Water I/O Transformer Fuses
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