How to avoid the premature failure of a replacement air conditioning compressor

This technical guide includes an overview of the most common installation failures

How to avoid the premature failure of a replacement air conditioning compressor

Have you encountered the failure of a newly installed air conditioning compressor or found that the AC system does not work after the compressor’s replacement?

To avoid such problems, Nissens Automotive is highlighting the issues to ensure that workshops know how to perform a right first-time compressor installation.

The AC compressor is the heart of the AC system and it is also one of its most expensive parts. The installation process can significantly impact both the lifespan and performance of the compressor, which means that if it is not installed correctly, it can fail prematurely.

To avoid this problem, it’s crucial to follow the correct procedure and to be aware of the most common compressor failures.

Click here for some basic installation tips. Alternatively, click here for a more detailed, step-by-step guide.

Overview of common installation failures

Lack of/improper flushing

Cause: Careless service, repair cost/time reduction
Results/Symptoms: Seizure/overheating/inner blockage of the newly installed compressor
Diagnostics: Visual inspection glass and AC system temperature/pressure diagnostics

Click here for a complete flushing guide.

Improper lubricant charge

Cause: Improper oil volume in the system
Results/Symptoms: Poor system performance, compressor overheating and seizure
Diagnostics: AC system temperature/pressure diagnostics

Click here for how to properly charge the lubricant.

Improper lubricant type

Cause: Improper oil in the system/oil mixing
Results/Symptoms: Impaired compressor lubrication, overheating and seizure
Diagnostics: Visual inspection glass and AC system temperature/pressure diagnostics

Click here for how to avoid mixing universal oils.

Additives impairing lubrication

Cause: Improper use of AC system additives
Results/Symptoms: Impaired compressor lubrication, overheating and seizure
Diagnostics: Visual inspection glass and AC system temperature/pressure diagnostics

Click here to learn about harmful additives.

Poor condition of the condenser

Cause: Poor performance, inner blockages of the condenser
Results/Symptoms: Poor AC system performance, too high/too low pressure readings, AC compressor overheating/seizure
Diagnostics: Visual inspection of the condenser, AC system temperature/pressure diagnostics

Click here to view a condenser diagnostics video.

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