To Next PageTo Next PageWhat to do if my Primus MB33 displays 'Unload' and 'Door is Open'?
If your Primus Scrubber displays 'Unload' and indicates that the 'Door is Open', check if the “Door Switch” is still closed. If the “Door Switch” is broken, replace it.
How can I fix a 'Heating Time Failure' on my Primus MB33?
If you're getting a 'Heating Time Failure' (Failure 14) on your Primus Scrubber, check if the programmed Max Heating time in the Initialisation menu is acceptable. If the machine has a small heating capacity, increase the value of the Max heating time.
How to resolve a 'Wrong Inverter Model Type' error on a Primus MB33?
If your Primus Scrubber displays a 'Wrong Inverter Model Type' (Failure 44) error, verify that you have selected the correct machine type in the Configuration menu.
How do I clear the 'Service Due Warning' on my Primus MB33?
If you're seeing a 'Service Due Warning' (Failure 41) on your Primus Scrubber, you can reset the cycle counter in the Service Menu. To check the cycle counter, press the SERVICE-STATE button and find the value in the second menu item.
General safety warnings and operational precautions for the machine.
Describes how to access and navigate the Initialization Menu for machine setup.
Details how to access and configure machine-specific settings in the Configuration Menu.
Details functions for managing programs: numbering, naming, viewing, editing, copying, deleting.
Guides on interpreting and responding to error messages displayed by the computer.
Guides on understanding diagnostic error messages, including their format and meaning.
Provides a comprehensive overview of failure messages, their causes, and actions.
Guides on accessing the Diagnostic Menu to test machine functions.
Lists various diagnostic tests for machine components like display, sensors, and motors.
Describes issues with the door switch and how to diagnose them for safety.
Details problems with the door solenoid switch and their diagnosis.
Explains failure 8 when the door lock check fails at the start of a process.
Failure when the door solenoid switch remains closed.
Failure when the water level is not reached within the programmed time.
Failure when the water level exceeds the target level.
Failure when the heater elements are not functioning correctly.
Failure when the target temperature is not reached within the heating time.
Failure when the water temperature exceeds the target by a significant margin.
Failure related to motor overcurrent security tripping.
Failure concerning motor security for wash and low spin.
Failure related to motor security for distribution and high spin.
Failure when the water level rises above the overflow tube.
Failure due to a defective PCB temperature sensor.
Failure related to a defective level sensor.
Failure due to a defective temperature sensor.
Failure related to communication issues with the inverter.
Failure indicating stall prevention is active due to overload.
Failure when incompatible software is loaded.
Failure related to a defective motor contactor.
Failure when the water recycle tank is empty during fill.
Failure when the cycle counter reaches the service due value.
Failure when the wrong voltage range is selected.
Failure when the wrong inverter model type is detected.
Failure when the speed sensor is not sending pulses.
General