Course Title: Diagnose and rectify faults in air conditioning and refrigeration systems and components

Part A: Course Overview

Program: C4303 Certificate IV in Air-conditioning and Refrigeration Servicing

Course Title: Diagnose and rectify faults in air conditioning and refrigeration systems and components

Portfolio: SEH Portfolio Office

Nominal Hours: 40

Regardless of the mode of delivery, represent a guide to the relative teaching time and student effort required to successfully achieve a particular competency/module. This may include not only scheduled classes or workplace visits but also the amount of effort required to undertake, evaluate and complete all assessment requirements, including any non-classroom activities.

Course Code




Learning Mode

Teaching Period(s)

Course Contact: Program Manager

Course Contact Phone: +61 3 9925 4468

Course Contact Email:

Course Description

This unit covers diagnosing, repairing faults and replacing faulty components in refrigeration and air conditioning systems, components, interconnecting circuits and equipment operating at voltages up to 1,000 V a.c. It encompasses working safely, reading electrical circuit diagrams, refrigeration, hydronic and air distribution system diagrams and manufacturers reference material, sketching diagrams from traced wiring and piping systems, applying logical fault finding procedures, conducting repairs, replacing components and completing the necessary service documentation.

Pre-requisite Courses and Assumed Knowledge and Capabilities

UEENEEJ107A Install air conditioning and refrigeration systems, major components and associated equipment
UEENEEJ110A Select refrigerant piping, accessories and associated controls
UEENEEP017A Locate and rectify faults in low voltage composite appliances using set procedures
UEENEEE101A Apply Occupational Health and Safety regulations, codes and practices in the workplace
UEENEEE102A Fabricate, assemble and dismantle utilities industry components
UEENEEE003B Solve problems in extra-low voltage single path circuits
UEENEEE105A Fix and secure electrotechnology equipment
UEENEEE107A Use drawings, diagrams, schedules, standards, codes and specifications
UEENEEE137A Document and apply measures to control OHS risks associated with electrotechnology work
UEENEEJ102A Prepare and connect refrigerant tubing and fittings
UEENEEJ103A Establish the basic operating conditions of vapour compression systems
UEENEEJ104A Establish the basic operating conditions of air conditioning systems
UEENEEJ106A Install refrigerant pipe work, flow controls and accessories
UEENEEJ108A Recover, pressure test, evacuate, charge and leak test refrigerants
UEENEEJ153A Find and rectify faults motors and associated controls in refrigeration and air conditioning systems
UEENEEJ194A Solve problems in low voltage refrigeration circuits
UEENEEJ170A Diagnose and rectify faults in air conditioning and refrigeration control systems
UEENEEP012A Disconnect / reconnect composite appliances connected to low voltage installation wiring

National Competency Codes and Titles

National Element Code & Title:

UEENEEJ111A Diagnose and rectify faults in air conditioning and refrigeration systems and components


Prepare to find and rectify faults
Find faults
Repair fault
Completion and report fault finding and rectification activities

Learning Outcomes

Refer to elements

Overview of Assessment

Assessment may incorporate a variety of methods including written/oral activities and demonstration of practical skills to the relevant industry standards. Participants are advised that they are likely to be asked to personally demonstrate their assessment activities to their teacher/assessor. Feedback will be provided throughout the course