Yamato DKN412C - 8 Error Codes; Reading Error Codes

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8. ERROR CODES
Reading Error Codes
DKN-C series units have a self-diagnostic function built into the CPU board and a separate safety device,
independent of the CPU board.
The table below shows possible causes and measures to take when safety device is triggered.
Error Codes
When an operational error or malfunction occurs, the alarm lamp on the control panel illuminates,
an error code is displayed, and an alarm sounds. When an error occurs, confirm the error code
and terminate operation immediately. Note that a temperature gauging error will be indicated by
ALARM lamp illuminating and accompanied by dashes in the display. No error code will be
displayed and no alarm will sound.
Safety device
Symptom
Possible causes and measures
Sensor error
detected
Alarm lamp on
in display
 Temperature sensor interrupted,
disconnected or other malfunction
Contact original dealer of purchase
Short circuit
detected
Alarm lamp on
in display
 Short circuit in SSR (solid state relay)
Contact original dealer of purchase
Heater
interruption
detected
Alarm lamp on
in display
 Heater interrupted or disconnected
 Current detection element interrupted,
disconnected or other malfunction
Contact original dealer of purchase
Memory error
Alarm lamp on
in display
 Memory setting error
Contact original dealer of purchase
Internal
communication
error
Alarm lamp on
in display
 Internal communication error,
temperature input circuit error
Contact original dealer of purchase
Overheat
Alarm lamp on
in display
 Overheat prevention unit activated
 Overheat prevention unit interrupted
disconnected or other malfunction
Check the temperature setting.
If the unit does not reset, contact service
department.
Temperature
gauging error
－－－－ in display
Gauged temperature is out of display
range
Contact original dealer of purchase