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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 will illuminate on the
control panel, an error code will be displayed on the control panel and the alarm busser will
sound. When an abnormality occurs, confirm the error code and immediately stop operation.
Safety device
Symptom
Possible causes and measures
Sensor error
Alarm lamp on
indication
Error in the temperature input circuit
Disconnection or other errors in the temperature
sensor
Measured temperature is outside the displayable
range
Contact our service department.
SSR short circuit
Alarm lamp on
indication
SSR short circuit
Contact our service department.
Detection of heater
disconnection
Alarm lamp on
indication
Heater disconnection
Contact our service department.
Overheat
Alarm lamp on
indication
Activation of overheat protector
First reset the power supply and check the
temperature in the bath and the set
temperature for the overheat protector.
If the unit does not reset, contact our service
department.
Memory error
Alarm lamp on
appears
Memory setting error
Contact our service department
Internal
communication
error
Alarm lamp on
indication
Communication error between the control
board and the display board
Contact our service department.