Service Issues
USI 3155B Combo II
Choose the problem first, then open the focused route for tools, safety notes, locator help, parts status, and checklist steps.
Issue Finder
What Problem Are You Seeing?
Search symptoms, filter by system, then open the matching route.
Public-safe review handoff
This procedure guides you through initial, non-invasive checks that can be performed safely by general personnel to determine if professional service is required.
Cooling or refrigeration problem
Use this when the machine is not staying cold or refrigeration components are involved.
Payment or money acceptance problem
Money, validator, coin, bill, or card-reader clues point to this route.
No power or dead display
Use this when the machine is dead, blank, unresponsive, or has power-input symptoms.
Product not dispensing
Use this when the product path, tray, spiral, vend motor, or delivery path is suspect.
Water Flow or Fitting Service
Use this when water taste, pressure, filters, tubing, fittings, or leaks are involved.
Machine Context
Areas This Machine May Use
Use these areas as orientation only. Open a specific issue before following diagnostic steps.