TROUBLESHOOTING ERROR CODES
56 SERVICE MANUAL
REVISION 04/19, SW: 3.51
Error Code 34
The water pressure is too low. (less than 1.5 bar).
Steps Checklist Solution
1 Pull one of the wires from the water
pressure switch to check if the signal
changes to YES.
If YES, replace the sensor.
1 Check that the water is turned on. Clean the solenoid valve
filter.
2 Check that the water pressure is at least
2.5 bars.
Error Code 40
The I/O board temperature has been too high. Note that this is a warning. If the
temperature continues to rise, the oven will stop and display error code 16.
Steps Checklist Solution
1 Clean the filter at the bottom of the
panel and check that the cooling fan
behind the front panel is running.
Clean the filter at the
bottom of the panel.
2 Check that the cooling fan behind the
front panel is running.
Replace the cooling fan, if
necessary.
3 Replace the I/O board.
Error Code 43
Wrong software.
Steps Checklist Solution
1 Contact HOUNO Technical Support at
techsupport@houno.com.
Please upload the correct
software.
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