Empty the sump tank first—disconnect the drain hose from the sump and let it fully drain. Then check the info screen to see if the water level reads under 4 mm. If it's 4 mm or higher, you need to recalibrate.
Here's the process:
Open the front panel.
Go to info screen and confirm the reading.
Hit the menu gear, log in with password 5478, go to parameter settings, scroll to "calibrate water level sensor," change it from 0 to 1, and save.
Log out, then log back in with password 0813.
Check the info screen again — it should now read 0 mm.
Reconnect the drain hose, close everything up, and hold the "make ice" button for 5 seconds to restart.
This is for the True cubed ice machines with the touchscreen. If your model is different, especially a smaller residential undercounter one, let me know the exact model number for more tailored steps. Always double-check the manual or True's support if you're unsure.
To Calibrate:
TRUE Ice Service Manual: https://www.truemfg.com/wp-content/uploads/2025/08/857284-TI-TCIM-Service-Manual_Rev_A_EN.pdf