The Hill‑Rom C2C‑2 Isolette C2000 is an infant incubator that uses a sealed dual‑air curtain system with PID‑controlled temperature and humidity regulation, powered by a dedicated control board and servo‑driven humidifier. Common failure points on this model include the main power supply module (causing loss of all functions), the PID controller or its sensor inputs (leading to erratic temperature/humidity readings), and the humidifier motor/drive circuit (resulting in low humidity or no airflow). First‑check steps: verify 24 V DC input at the control board, inspect all I/O connectors for loose or corroded contacts, and review any error codes displayed on the unit’s LCD panel. If power is present but functions are intermittent, perform a continuity test on the humidifier drive circuit and replace any failed capacitors on the main board as indicated in the service manual.[oss-gpt-20b]