# CTE Resource Center - Verso - Diesel Equipment Technology III Task 1705008907

CTE Resource Center - Verso

Virginia’s CTE Resource Center

Verify the need for service or repair of HVAC systems based on unusual operating noises.


Verification should include

  • testing for proper operation of each component within the system
  • determining needed action.

Process/Skill Questions

  • How does the expansion valve work?
  • What is the proper refrigerant charge and type?