Lesson 1Estimating repair time and labor tasks for common AC fixesEstimate realistic repair times an labor tasks fi common inverter AC jobs. Break down diagnostics, disassembly, part replacement, testing, an cleanup so yuh can quote labor accurately an schedule yuh daily workload efficiently.
Time estimates fi standard diagnosticsTypical durations fi common repairsAllowances fi access an site conditionsPlanning visits an daily job schedulingLesson 2Parts priority and vehicle stocking: high-priority spares to carry vs order-only itemsPlan which AC spare parts fi keep inna yuh vehicle fi fast repairs. Learn fi classify high-priority, medium-priority, an order-only items base pon failure rates, cost, storage space, an how quick customers expect di repair done.
Classifying high-priority fast-moving sparesMedium-priority an brand-specific partsOrder-only, bulky, or rare componentsOrganizing an labeling van inventoryReviewing stock base pon past repairsLesson 3Safety, refrigerant regulations, and documentation practices for field repairsFollow safety rules an refrigerant regulations during field repairs. Learn personal protective equipment, leak handling, recovery an charging rules, labeling, an accurate documentation fi stay compliant an protect customers an di environment.
Personal protective equipment fi AC workSafe handling of refrigerant cylindersLeak response an environmental dutiesRecovery, recycling, an charging rulesService reports an job documentationLesson 4Typical replacement parts and failure likelihoods for inverter ACs and fast diagnosticsIdentify typical failure-prone parts inna inverter ACs an how fi test dem quick. Learn fast diagnostic shortcuts fi PCBs, sensors, fans, an compressors so yuh can prioritize checks an reduce time spent pon each service call.
High-failure electronic an sensor componentsCommon fan motor an bearing problemsTypical compressor an start failuresQuick tests fi confirm suspect partsUsing patterns from brand service historyLesson 5Common fault patterns: weak cooling, gurgling sounds, unit stopping after runtimeRecognize common inverter AC fault patterns an link symptoms to likely causes. Yuh wi study weak cooling, gurgling or hissing sounds, an units dat stop after some runtime, den map each pattern to electrical, refrigerant, or airflow issues.
Weak cooling wid normal power consumptionGurgling or hissing sounds inna pipingUnit stopping after short or long runtimeIntermittent cooling an random restartsPatterns linked to sensor or PCB issuesLesson 6Refrigeration checks with gauges and thermometer: static pressure, superheat/subcooling, refrigerant level diagnosisApply refrigeration gauges an thermometers fi evaluate system health. Learn static an running pressure checks, superheat an subcooling measurement, an how fi judge refrigerant level an restrictions widout overcharging di system.
Safe connection of gauges to service portsStatic pressure checks an what dem showMeasuring running pressures correctlyCalculating superheat an subcoolingDiagnosing charge level an restrictionsLesson 7Preventive maintenance upsells specific to ACs: filter care, coil cleaning, refrigerant checks, and service contractsDevelop profitable an ethical preventive maintenance routines fi split inverter ACs. Learn filter an coil care, drain cleaning, basic refrigerant checks, an how fi package an explain service contracts dat add value fi customers.
Filter inspection, cleaning, an replacementIndoor an outdoor coil cleaning proceduresDrain pan an condensate line maintenanceBasic refrigerant health checks during serviceDesigning an pricing AC service contractsExplaining maintenance plans to customersLesson 8Presenting AC repair options and pricing to customers clearly and respectfullyLearn how fi present repair findings, options, an prices inna clear, honest, an respectful way. Yuh wi practice explaining faults, offering repair tiers, handling objections, an documenting approvals fi build long-term customer trust.
Explaining diagnosis inna simple languageOffering good, better, best repair optionsDiscussing parts, labor, an warranty termsHandling price objections professionallyDocumenting approvals an declined workLesson 9Understanding inverter AC systems: compressor types, PCB/inverter board, variable speed operationUnderstand how inverter split AC systems work so diagnostics make sense. Study inverter compressor types, PCB an power modules, variable speed operation, sensors, an how di system modulates capacity an current draw under different loads.
Fixed-speed vs inverter compressor basicsRole of di main PCB an inverter moduleHow variable speed controls capacityKey sensors an dem functionsImpact of load an ambient on operationLesson 10Electrical tests with multimeter and clamp meter: supply checks, capacitor/function of fans, compressor current and run analysisLearn how fi safely use a multimeter an clamp meter on inverter ACs. Yuh wi check supply voltage, capacitors, fan motors, compressor current, an interpret readings fi detect overload, imbalance, or failing electrical components.
Safety checks before live electrical testingMeasuring supply voltage an phase balanceTesting capacitors an fan motor windingsMeasuring compressor starting an running currentInterpreting abnormal current an voltage readingsLesson 11On-site visual checks and safety: leaks, frost, wiring, drainage, airflow, accessible componentsPerform systematic on-site visual checks before deeper testing. Yuh wi inspect fi leaks, frost, wiring damage, drainage issues, airflow blockages, an access problems while following safe work practices around live equipment an ladders.
Exterior inspection of indoor an outdoor unitsChecking fi oil stains an refrigerant leaksIdentifying frost, ice, an airflow blockagesInspecting wiring, terminals, an insulationDrainage, leveling, an mounting checksSafe ladder an work area practicesLesson 12Confirming faults: isolating PCB vs sensor vs mechanical issues using step-by-step testsUse structured tests fi confirm whether faults come from di PCB, sensors, or mechanical components. Yuh wi follow step-by-step isolation methods, cross-check readings, an avoid unnecessary board or compressor replacement.
Reading an interpreting error codesTesting thermistors an pressure sensorsIsolating indoor vs outdoor PCB faultsDistinguishing electrical vs mechanical issuesAvoiding unnecessary board replacement
