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MN-111 | Service book | Errors and Troubleshooting MN-111 ENG Rev08 | 2019/06/21 | © 2019 W&H Sterilization Srl
Errors
CHECKS AND ACTIONS
Notice: For any error not listed in this table, call technical service.
Code
Description
Possible causes
Checks and actions
010
Mains voltage or 24V error during
the cycle.
Power cord failure or
disconnected.
Check the power cord is properly plugged. Check the power cord for electric continuity.
Sterilizer switched OFF during a
cycle.
Wait until the error phase on the screen is finished.
Electric failure in the building
system.
Connect the sterilizer to a dedicated circuit as reported in the user instruction.
Check the electric power in the building.
Check the electric power at the wall plug.
24 V power unit failure.
Check the 24 V power unit (see Test instructions service book).
011
Software error during update.
Software update failure.
Repeat the update.
If the failure persist, call service.
020 to 049
Internal voltage out of range.
Sensor failure.
Main board failure.
Disconnect progressively all sensor cables from the main board. Check the ERRORS
screen:
n
If the error persists, replace the main board.
n
If the error disappears, replace the sensor/cable that causes the error.
050 - 051
Mains voltage out of range.
Mains voltage out of range.
Main board failure.
Check the System Info screen.
The mains voltage of the 230V sterilizer version must be between 180 and 264 volts and
must be stable.
The mains voltage of the 110V sterilizer version must be between 90 and 132 volts and
must be stable.
If the mains voltage is bad (out of range or unstable), check the mains supply voltage
with a multimeter and compare it with the reading of the System Info screen.
If the values are different, replace the main board, otherwise check the electric supply.
053
Current consumption of the
sterilizer out of the range.
Electric 230 V-110V supplied
component failure (short-
circuited or out of range).
Main board failure.
In the Component Activation menu, check the resistance of all the supplied components
(heaters, vacuum pump, water pump).
Compare the values shown by the sterilizer with those measured with a multimeter.
n
If the values are different and those given by the multimeter are in the range while
those given by the sterilizer are out of range, replace the main board.
n
If all values are the same and a component gives an out-of-range value, replace
the component.
054 to 059
Main board: internal voltage error.
Main board failure.
Replace the main board.
060
Low voltage on 24 VDC circuit.
Failure of a 24 V-supplied
component or in its connection
cable to the main board.
Disconnect progressively all components from the main board. Check the ERRORS
screen:
n
If the error disappears, replace the component/cable that causes the error.
n
If the error persists, see next step.
Failure of the 24 V supply unit.
Check the 24 V power unit (see Test instructions service book).
061
Too high voltage on 24 VDC circuit. Failure of the 24 V supply unit.
Check the 24 V power unit (see Test instructions service book).
070
24 VDC overcurrent.
24 V component failure.
If the error is permanent disconnect progressively all 24V components/sensors cables
from the main board.
Check the ERRORS screen:
n
If the error disappears, replace the component/cable/sensor that causes the error.
n
If the error persists, replace the main board.
Sensor failure.
If the error is not permanent:
If the problem persist see next step.
Door locking motor failure.
See Test instructions service book, chapter SPECIFIC TEST FOR INDIVIDUAL COMPONENTS,
Door locking system - automatic mode, Door locking system - manual mode.
080 - 082
Main board temperature too high.
Main board failure.
With a hand-held thermometer, check the temperature in the main board area.
If the values are different from those measured by the sterilizer (check the System Info
screen), replace the main board.
Room temperature too high.
Condenser/Dust filter/Fan grid
clogged/dirty.
Clean the component with compressed air.
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