Yamato Scientific DVS602 Constant Temperature Drying Oven - Manual (Page 39)

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8. Troubleshooting
Safety device and error codes
The unit has the self diagnostic function with a controller and a separate safety device.
Table below shows possible causes and measures when the safety device is triggered.
[Error codes]
When a functional or mechanical abnormality occurs, the alarm lamp on the control panel
comes on, an error code will be displayed and the alarm buzzer sounds. When an
abnormality occurs, confirm the error code and immediately stop operation.
Safety device Symptom Possible causes and measures
Sensor error
detected
Alarm lamp on
appears
z Disconnection or other errors in the
temperature sensor
Contact our service department.
SSR short circuit
detected
Alarm lamp on
appears
z SSR short circuit
Contact our service department.
Heater
disconnection
detected
Alarm lamp on
appears
z Heater disconnection
Contact our service department.
Memory error Alarm lamp on
appears
z Memory setting error
Contact our service department.
Internal
communication
error
Alarm lamp on
appears
z Internal communication or the tem-
perature input circuit error
Contact our service department.
Overheat Alarm lamp on
appears
z Activation of overheat prevention
device
Check the set temperature.
Contact our service department if the
unit will not recover.
Measured
temperature error
Alarm lamp on
−−−−
- - - - appears z When the measured temperature is
outside the displayable range
Contact our service department.