UEERA0032 — Diagnose and rectify faults in complex air conditioning/refrigeration systems
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What an assessment for UEERA0032 must cover
110 assessable components: 3 elements (21 performance criteria), 15 performance evidence and 74 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.
Elements & performance criteria
1 Prepare to diagnose and rectify faults
- 1.1WHS/OHS requirements and procedures are identified, obtained and implemented
- 1.2WHS/OHS risk control measures and procedures are followed in preparation for work
- 1.3Hazards are monitored and any not previously identified are documented and risk control measures implemented in consultation with relevant person/s
- 1.4The extent of faults are determined from reports/documentation and discussions with relevant person/s
- 1.5Relevant person/s is consulted to ensure work is coordinated with others on the worksite
- 1.6Tools, equipment and testing devices required to diagnose faults are obtained and checked for correct operation and safety in accordance with workplace procedures
2 Diagnose and rectify faults
- 2.1WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
- 2.2Need to test or measure live work is determined in accordance with workplace procedures and WHS/OHS requirements
- 2.3Circuits/machines/plant are checked as being isolated, where necessary, in accordance with workplace procedures and WHS/OHS requirements
- 2.4Logical diagnostic methods, measurements and estimations are applied to diagnose complex refrigeration/air conditioning system faults in accordance with system operational parameters and requirements
- 2.5Suspected fault sources are tested to confirm if they are the source of system problems
- 2.6Fault causes are identified and appropriately competent person/s engaged to rectify the fault where it is outside the scope of the refrigeration and air conditioning system
- 2.7Faults in system components are rectified to return refrigeration/air conditioning system to its operational standard
- 2.8System is tested to verify that the system operates as intended and to specified requirements and industry standards
- 2.9Methods for resolving unexpected situations are discussed, as required, with appropriate person/s in accordance with job specifications and requirements
- 2.10Methods for resolving unexpected situations are selected on the basis of safety and specified work outcomes
- 2.11Diagnosis and rectification activities are conducted without waste of materials, damage to apparatus, the surrounding environment and/or services using sustainable energy practices
3 Complete and report fault diagnosis and rectification activities
- 3.1WHS/OHS work completion risk control measures and procedures are followed
- 3.2Worksite is made safe in accordance with workplace safety procedures
- 3.3Fault diagnosis and rectification activities are documented in accordance with workplace procedures
- 3.4Appropriate person/s is notified that system faults have been rectified in accordance with workplace procedures
Performance evidence
- applying logical diagnostic methods
- using fault scenarios to test the cause of system faults
- identifying faults and competency needed to rectify them
- rectifying faults in system controls
- verifying that the system operates correctly
- dealing with unplanned events
- applying relevant legislations, industry standards, codes of practice and regulations
- applying relevant work health and safety (WHS)/occupational health and safety (WHS/OHS) requirements, including:
- applying safe working practices
- hazard identification and reporting
- implementing risk control measures
- completing and reporting fault diagnosis and rectification activities
- determining need to test or measure live work
- isolating circuits/machines/plant
- using relevant tools, equipment and testing devices
Knowledge evidence
- complex refrigeration and air conditioning system fault finding and repair, safe working practices and relevant standards, codes and regulations, including:
- fault-finding techniques including:
- factors to consider in clarifying the nature of a fault:
- initial fault report
- confirmation of symptoms of the fault
- comparison of symptoms with normal operation
- effect to cause reasoning — assumptions of possible causes
- methods for testing assumptions encompassing:
- visual inspection
- sectional testing
- split-half tests
- component isolation
- dealing with intermittent faults
- causes of intermittent faults are vibration, shock, changes in temperature and electromagnetic interference
- refrigeration system analysis, including:
- pressure enthalpy definitions:
- high pressure and low-pressure refrigerants
- triple point of new refrigerants
- glide of trinary blends
- differential evaporation of refrigerant blends
- variable refrigerant volume
- refrigeration cycle, including:
- expansion process
- vaporising process
- compression process
- condensing process
- compression ratio
- enthalpy processes, including:
- co-efficient of performance
- effect of suction temperature on cycle efficiency
- effect of condensing temperature on cycle efficiency
- actual refrigerating cycles, including:
- design operating conditions
- effects of superheating suction vapour
- superheating without useful cooling
- superheating that produces useful cooling
- superheating in suction piping outside the refrigerated space
- superheating the vapour inside the refrigerated space
- effects of subcooling the liquid
- effects liquid - suction heat exchangers
- effects of pressure losses resulting from friction
- refrigeration cycle faults, including:
- symptoms and causes
- measurements and fault confirmation tests
- air conditioning system analysis, including:
- psychrometric chart, including:
- properties, definitions and units
- plotting conditions:
- RA, SA, OA and MA
- psychometric processes, including:
- heating
- cooling only
- cooling and dehumidification
- cooling, dehumidification and reheat
- design operating conditions, including:
- indoor and outdoor wet and dry bulb temperatures
- volume flow rate supply, return and outdoor air
- air conditioning system faults, including:
- symptoms and causes
- measurements and fault confirmation tests
- power and control system analysis, including:
- power and control circuit diagrams
- sequence of operation
- manufacturers diagrams, specifications and instructions
- power and control circuit faults:
- symptoms and causes
- measurements and fault confirmation tests
- relevant measurements and estimations
- relevant risk mitigation processes
- relevant WHS/OHS legislated requirements, including:
- environmental and sustainable energy principles and practices
- safe working practices
- relevant workplace policies and procedures
- relevant workplace documentation
Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.
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Questions about assessing UEERA0032
What does an assessment tool for UEERA0032 need to cover?
To satisfy the Principles of Assessment and Rules of Evidence, an assessment for UEERA0032 needs to address all 110 unit components: 3 elements with 21 performance criteria, 15 performance evidence requirements, 74 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.
How does Auditori generate an assessment tool for UEERA0032?
Auditori pulls the current release of UEERA0032 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.
Is the first assessment tool really free?
Yes. Every new account includes one free credit — enough to generate the complete assessment tool for UEERA0032 — with no card and no subscription required. After that it's pay-as-you-go per unit.
Can I check my existing UEERA0032 assessment instead of generating a new one?
Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of UEERA0032, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.
Related units
- UEERA0001 — Analyse the operation of HVAC air and hydronic systems
- UEERA0002 — Analyse the psychrometric performance of HVAC/R systems
- UEERA0003 — Analyse the thermodynamic performance of HVAC/R systems
- UEERA0004 — Analyse vibration and noise in refrigeration and air conditioning systems
- UEERA0005 — Apply safety awareness and legal requirements for ammonia refrigerant
- UEERA0006 — Apply safety awareness and legal requirements for carbon dioxide refrigerant
- UEERA0007 — Apply safety awareness and legal requirements for flammable refrigerants
- UEERA0008 — Audit HVAC/R control systems for compliance with regulations and standards
- UEERA0009 — Audit energy use for commercial HVAC/R systems
- UEERA0010 — Commission complex heating, ventilation and air conditioning (HVAC) systems
- UEERA0011 — Commission complex refrigeration systems and equipment
- UEERA0012 — Commission complex refrigeration/air conditioning control systems
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