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Best practices for troubleshooting refrigeration systems before it’s too late

Tania Piunno
Tania Piunno
July 29, 2021
7 min. read

Many industries rely on refrigerators and refrigerants to store essential products, help preserve goods for longer periods of time, and cool down large spaces. When an issue arises with refrigeration equipment, customers need technicians to get their systems back to working at their full potential as soon as humanly possible.

But oftentimes, the products being stored or preserved are perishable commodities whose quality and safety are not to be tampered with. Hence why customers in these industries prefer to have regular maintenance plans in place, rather than taking the risk and waiting for a potential breakdown to happen.

HVAC business software can make all the difference when dealing with critical equipment like refrigeration. Customizable maintenance programs can be scheduled based on frequency to address any possible issues with the system ahead of time. Being proactive by implementing a preventive maintenance plan helps predict the likelihood of future equipment failures that would otherwise cost the business a lot more money.

Refrigeration techniques are utilized by a broad range of sectors

To shed some light on how diverse the scope really is, here are a few examples of some of the different industries that rely heavily on refrigeration equipment or refrigerant materials to extend the life of their products


Refrigeration for food preservation is common practice in most parts of the world. By freezing or keeping food cool, the growth of bacteria either slows down or ceases completely. Food service businesses invest in expensive refrigeration systems to extend food supply, thus unexpected emergencies tend to be avoided to prevent spoilage


Medical-grade fridges are utilized to store medications, vaccines and other pharmaceuticals so that they remain effective for longer and safe for the population to use. Unforeseen repairs are highly discouraged when dealing with sensitive medication that can cause more harm than good if not stored properly


Refrigerants are compounds used in air conditioners to cool the air that circulates indoors. Some refrigerants are environmentally hazardous and need to be disposed of by trained professionals, therefore maintenance programs are necessary. Praxedo’s best HVAC software can help with this


Data center providers need to implement cooling systems to manage temperatures and control the humidity levels within their environment. Protecting numerous hardware servers located in one common area means safeguarding them from external fluctuating temperatures. Since servers in a data center run for 24 hours, 7 days a week, refrigerant cooling is required to keep mobile networks from failing.

Catching a problem before it starts

Essential businesses can’t afford refrigeration downtime. They need their fridges running without fail. Take vaccine-makers Pfizer and Moderna for example, that have limited supplies of the medication and need to distribute them slowly over weeks and even months. The vaccine must be stored in extra-cold environments with minimal fluctuation and fridges are set to very specific temperatures. Any downtime poses a significant threat to the effectiveness of the vaccine and if the refrigerator were to break down, all vaccines must be discarded.

There are strategies helping organizations just like Pfizer and Moderna optimize scheduling to ensure their refrigeration systems never experience mechanical failures, and it begins with field service management software.

Refrigeration System: Understanding Head Pressure and Discharge Temperatures

The head pressure in a refrigeration system plays a vital role in its efficient functioning. Typically, the air conditioning unit’s condensing temperature determines the head pressure. A system with too high or too low head pressure may indicate problems such as an overcharge of refrigerant or obstructions in the condenser, respectively. Regular monitoring can prevent these issues from escalating, ensuring the system is working properly.

Discharge temperatures are equally significant in maintaining the performance of a refrigeration system. Overheating, often signaled by high discharge temperatures, can severely damage the compressor, one of the most expensive components to replace. Notably, the discharge pressure at the compressor discharge, combined with the pressure in the suction line, gives us the compression ratio – a critical metric in any refrigeration system. It’s crucial to regularly monitor discharge temperatures to maintain an optimum compression ratio.

Troubleshooting Common Refrigeration Problems

Several signs hint at possible refrigeration problems. For instance, ice buildup on the evaporator coils can point towards issues such as a malfunctioning defrost system, poor airflow, or a shortage of refrigerant. Frequent inspection of the evaporator coils is, therefore, essential to ensure the refrigeration system is functioning properly.

Moreover, the refrigeration compressor plays a key role in refrigerant charging. Issues like an overcharge of refrigerant can often be traced back to the compressor. A regular examination of the compressor and its discharge pressure can prevent serious issues from arising.

Similarly, the liquid line and expansion valve are vital parts of the refrigeration system. The liquid refrigerant passes through the liquid line and reaches the expansion valve, where it undergoes a drastic pressure drop before entering the evaporator. Any issue with these components can severely affect the system’s performance. Regular checks and proper maintenance of the liquid line and expansion valve can prevent many common refrigeration problems, ensuring the system is working properly. 


Underestimating the value of equipment maintenance often leaves companies with more expensive repairs to deal with down the line. Maintenance that is managed on a timeline maximizes a refrigerator’s lifespan and keeps costs under control. Field service software is used to schedule plans to detect wear and tear early, so field businesses can keep up with their contractual commitments. Maintenance checks for leaks or recurrent visits to get rid of toxic chemicals can easily be auto-scheduled within the tool.

With a digital solution like Praxedo software, service activities are tracked, and job history becomes fully traceable even years later.
Praxedo also includes an intuitive, yet easy-to-use mobile app that allows refrigerator technicians to access customer work history at their fingertips. In the app, they can view schedule updates in real-time, see a map-based view of their upcoming routes, learn the tools and safety gear required for each job, and easily input work order details while online and off


Professional contractors in the refrigerant and cooling industry need to ensure their work complies with strict protocols. Regulations around federal halocarbon emissions imposed by the government to protect the ozone layer from these harsh chemicals can’t be avoided.

During the field service process, reporting must be accurate, reliable, and timely. In addition, the follow-up on refrigerant disposal after the repair or install is even more critical. Scheduling recurring work orders using a field service management software is the only way to get the job done right from start to finish. Praxedo’s mobile app can pre-populate forms with specific regulatory information to validate whether the work performed is within certain standards and make the technician’s job a lot easier


Keeping equipment in optimal shape requires an efficient way to collect detailed information by eliminating manual data entry. Real-time tracking of jobs and technicians’ activities in the field gives dispatchers more time to analyze the bigger picture and react to disruptions if need be.

With Praxedo, data collected by field personnel is synced back to the central office. Service reports are electronic, processes are automated and paper documents are a thing of the past. Using their mobile devices, technicians can rapidly create their own work order reports or fill out existing ones. It’s super easy to add images of the work that was performed and get electronic signatures from the customer on the spot. Data collection should not be time-consuming, but rather empower a company’s mobile workforce to provide the best possible service experience to the end-customer.

No one enjoys doing manual reports, but field service software translates all the above information into structured, digitized reports with features that can be adapted to any business. When data collection is streamlined and automated, errors are reduced, and customer satisfaction increases.

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