Almost all valves in the CA system operate pneumatically and require at least 5 bar of compressed air to switch. Therefore, the output pressure of the compressed air compressor is set at 6-7 bar. When the pressure drops below 5 bar, the compressed air protection operates, and an alarm is sent to the My Fruit system.
Check the operation of the compressed air compressor and make sure that the output pressure is at least 6 bar. Compressed air may be leaking at the valve set of the CO₂ scrubber. This is because the valves are not fully closed due to pressure deficiency. Solve this by briefly turning the main switch off and on again. Then reset the alarm via the machine(s) display. Finally, reset the alarm in the My Fruit system.