HOUNO B Series - Troubleshooting Error Codes 8 and 9

TROUBLESHOOTING ERROR CODES
SERVICE MANUAL 47
REVISION 04/19, SW: 3.51
Error Code 8
The probe is broken or is not connected properly. The program cannot be used until
the error has been corrected.
Steps Checklist Solution
1 Go to the test menu (miscellaneous) to
see which information is displayed.
2 Check the cable and the cable plugs and
change the plug, if necessary.
3 Test the sensor using an ohmmeter,
and check whether the value matches
the value in the table and the current
temperature.
If not, change the sensor.
4 - Change the I/O board.
Error Code 9
The temperature sensor in the boiler/steam generator is not working properly.
Programs using steam cannot be used until the error has been corrected.
Steps Checklist Solution
1 Go to the test menu (steam generator)
to see which information is displayed.
2 Check the cable and the cable plugs and
change the plug, if necessary.
3 Test the sensor using an ohmmeter,
and check whether the value matches
the value in the table and the current
temperature.
If not, change the sensor.
4 - Change the I//O board.