ABSTRACT The need for an authentic and reliable report relating to the repairs and rehabilitation of a faulty air conditioner is inevitable.  The fact that many people use the air conditioner to cool the temperature in their respective home and offices make its maintenance a top priority to every individual in order to avoid huge expenditure in the repairs of the system.This report gives insight into the relevance of an air conditioner, the history, the working principle and the general maintenance one is expected to carry out for effective performance of the air conditioner.  It also includes the report on the faults discovered with the repair work carried out in the project.Subsequently, advanced information pertaining to the repairs involving a faulty air conditioner have been given in this report; this will beneficial to those interested in the repairs of the faulty air conditioner in future. TABLE OF CONTENTS Title pageLetter of transmittal Signature Approval pageDedicationAcknowledgementAbstractTable of contentsCHAPTER ONE1.1    Introduction1.2    History of refrigerating machine1.3    Significance of study1.4    Limitation of studyCHAPTER TWO2.1    Literature review2.2    Air conditioning maintenance2.3    Preparation for repairs2.4    Fault detection and repairs2.5    Precaution taken2.6    The working principles of air conditioner2.7    Air conditioning application2.8    Component parts of air conditioner2.9    Sequence of operationCHAPTER THREE3.1    COST ANALYSISCHAPTER FOUR4.1    Conclusion4.2    Recommendation4.3    References

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