service a commercial refrigeration unit that was not holding the correct temperature. The customer reported that perishable goods were spoiling faster than normal. After inspecting the system, I discovered a faulty temperature control thermostat that was causing the unit to shut off prematurely. I verified the issue by testing continuity and observing the system’s cycle behavior. I replaced the thermostat, monitored the temperature drop, and confirmed the unit reached and maintained the correct setpoint. The system is now operating efficiently, and the issue has been resolved.