Split Air Conditioning Servicing Course

Lesson 1 • Waste Disposal and Environmental Compliance

Explains proper disposal of dirty water, chemical waste, and recovered refrigerant. Compliance with environmental regulations protects technicians from liability.

Lesson 2 • Personal Protective Equipment Selection

Matches PPE type to specific hazards: chemical splashes, sharp fins, refrigerant exposure, and noise. Correct PPE selection reduces injury risk during cleaning operations.

Lesson 3 • Chemical Handling and Storage

Addresses coil cleaners, mould inhibitors, and refrigerant cylinders. Students read safety data sheets and store chemicals according to compatibility requirements.

Lesson 4 • Working at Height Safely

Covers ladder selection, scaffold use, and fall-arrest equipment for high-wall and rooftop units. Safe elevated work is required before students access outdoor condensers.

Lesson 1 • Refrigerants and Their Properties

Introduces common refrigerant types, global warming potential, and phase-out schedules. Proper refrigerant knowledge prevents mishandling and regulatory violations.

Lesson 2 • Outdoor Unit Components

Covers condenser coil, compressor, fan motor, capacitors, and service valves. Students map each part to its function within the refrigeration cycle.

Lesson 3 • Split AC System Configurations

Distinguishes wall-mounted, cassette, ducted, and multi-split configurations. Knowing each type prepares students for varied real-world installation scenarios.

Lesson 4 • How Refrigeration Cycles Work

Covers the vapour-compression cycle: evaporation, compression, condensation, and expansion. Establishes the thermodynamic basis for all maintenance decisions made later.

Lesson 1 • Hand Tools and Fastener Removal

Covers screwdrivers, nut drivers, hex keys, and panel-removal techniques. Proper tool use prevents stripped fasteners and damaged plastic housings.

Lesson 2 • Tool Maintenance and Calibration

Establishes cleaning, storage, and calibration routines for all service tools. Well-maintained tools ensure accurate results and extend equipment service life.

Lesson 3 • Electrical and Diagnostic Instruments

Covers multimeters, clamp meters, thermometers, and manifold gauge sets. Accurate readings from these instruments guide every diagnostic conclusion.

Lesson 4 • Leak Detection Equipment

Introduces electronic leak detectors, UV dye kits, and nitrogen pressure testing. Leak detection skills are essential before and after any refrigerant-side work.

Lesson 1 • Reassembly and Functional Verification

Reinstalls all panels, restores power, and verifies airflow, temperature drop, and drainage. Functional checks confirm the unit is safe and fully operational.

Lesson 2 • Blower Wheel and Fan Cleaning

Covers in-place and removed blower wheel degreasing to eliminate dust buildup. Clean blower wheels reduce noise, vibration, and energy consumption.

Lesson 3 • Evaporator Coil Cleaning

Applies foaming coil cleaner, agitation, and rinse techniques to remove biofilm and scale. Coil cleanliness directly determines cooling capacity and energy efficiency.

Lesson 4 • Pre-Cleaning Inspection and Setup

Covers unit shutdown, cover removal, and condition assessment before cleaning begins. Thorough inspection prevents damage and identifies faults requiring repair.

Lesson 5 • Drain Pan and Drain Line Service

Flushes drain pans, clears blockages, and applies biocide to prevent algae regrowth. Proper drainage prevents water damage and indoor air quality problems.

Lesson 1 • Electrical Compartment Protection

Covers masking terminals, protecting control boards, and drying procedures before power restoration. Moisture ingress into electrical compartments causes failures and safety hazards.

Lesson 2 • Condenser Coil Cleaning Techniques

Applies inside-out rinsing, coil cleaner, and low-pressure washing to remove debris and scale. Restored condenser efficiency lowers discharge pressure and compressor load.

Lesson 3 • Cabinet and Base Pan Cleaning

Cleans cabinet panels, base pan, and drainage holes to prevent corrosion and standing water. A clean cabinet protects internal components from accelerated deterioration.

Lesson 4 • Outdoor Unit Shutdown and Isolation

Covers isolator switch operation, capacitor discharge, and refrigerant valve status checks. Safe isolation is mandatory before any contact with outdoor unit components.

Lesson 1 • Identifying Refrigerant Leaks

Uses electronic detectors, UV dye, and soap solution to locate leaks at joints and valves. Early leak detection prevents refrigerant loss and compressor damage.

Lesson 2 • Pressure Testing After Repairs

Performs nitrogen pressure tests and standing pressure checks to confirm leak-free repairs. Pressure testing before recharging prevents refrigerant waste and repeat failures.

Lesson 3 • Refrigerant Recovery Procedures

Operates recovery machines to extract refrigerant into certified cylinders before opening systems. Proper recovery prevents atmospheric release and meets regulatory requirements.

Lesson 4 • Reading Manifold Gauges Accurately

Interprets high-side and low-side pressures against refrigerant pressure-temperature charts. Accurate gauge reading is the foundation of all refrigerant-side diagnostics.

Lesson 1 • Testing Capacitors and Contactors

Measures capacitance, checks contactor contacts, and identifies failed components with a multimeter. Capacitor and contactor faults are amongst the most common AC electrical failures.

Lesson 2 • Wiring Inspection and Repair

Identifies damaged insulation, loose terminals, and corroded connections in line and control wiring. Sound wiring prevents intermittent faults and fire hazards.

Lesson 3 • Systematic Fault Isolation Workflow

Applies a structured divide-and-test approach to narrow faults from symptom to root cause. A repeatable workflow reduces diagnostic time and prevents misdiagnosis.

Lesson 4 • Motor Winding Resistance Testing

Tests compressor and fan motor windings for opens, shorts, and ground faults. Winding tests confirm motor health before and after cleaning or refrigerant work.

Lesson 1 • Performance Benchmarking

Records temperature differentials, current draw, and coil pressures as baseline performance data. Benchmarks enable early detection of degradation between scheduled service visits.

Lesson 2 • Preventive Maintenance Checklists

Builds task-specific checklists covering all indoor, outdoor, and refrigerant-side inspection points. Checklists ensure consistent service quality across different technicians and sites.

Lesson 3 • Service Report Writing

Structures professional reports with findings, actions taken, parts used, and follow-up recommendations. Clear reports protect technicians legally and inform client decisions.

Lesson 4 • Client Communication and Handover

Explains service outcomes, filter care, and warning signs to clients in plain language. Effective handover builds client trust and reduces unnecessary callback visits.