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8. In the Event of Failure
Safety Device and Error Code
This unit has an automatic diagnosis function built in the controller and safety devices independent of
the controller. The table below shows the cause and the solution method when the safety device
operates.
Error Code:
If an error in use or equipment a failure occurs, the temperature display screen on the operating
panel displays the corresponding error code and the alarm buzzer sounds. The buzzer stops by
pressing any key. In case an error occurs, check the error code and turn off the earth leakage
breaker.
Safety Device
Notify
Cause/Solution
Sensor
trouble
detection
Display
Failure in temperature input circuit.
Temperature sensor is broken or disconnected.
The measured temperature is out of the display
range.
Make a call for service.
SSR
short-circuit
detection
Display
SSR is in short-circuit
Make a call for service.
Heater
disconnecting
detection
Display
Sterilize heater is disconnected.
Make a call for service.
Cover locking error
Display
The cover is unlocked during operation.
Make a call for service.
Cover
unlocking
error
Display
The cover is not unlocked at releasing.
Make a call for service.
Abnormal
drain
switch
Display
The drain switch is not installed normally.
Open the door to confirm the open&close state of
srain switch and the normal position of baffle.
Overheat error
Display
The chamber temp.rises to 140
℃
or above.
The temp. of "preset temp. + (plus) 3
℃
or above" is
continued for one minute during sterilize course.
The temp. of "preset temp. + (plus) 10
℃
or above"
is continued for ten minutes during retain temp.
course.
Make a call for service.
Sample
sensor
(optional)
disconnection
Display
Disconnection or abnormality of sample sensor.
The setting is set to "on" when the sensor is not
attached.
Make a call for service.
Exhaust valve
error
Display
Failure in exhaust valve.
Make a call for service.
A/D conversion
error
Display
Failure in electrical parts.
Make a call for service.