This service tool tests the system's ability to control the thermal mixer temperature, and check if it can agitate properly.


  1. On the home screen, tap the Settings icon (gear), tap Service Tools, and then tap Thermomixer test.
  2. Tap Run Test.
  3. The system displays status information while it performs the procedure.
  4. Tap Cancel to abort the run.
  5. Tap Back upon run completion to return to the home screen.


The system test and the thermomixer test both cause the thermal mixer to heat up. Therefore, running either of these tests back-to-back can produce an error. Wait 15 minutes for the thermal mixer to cool down before running another test.