Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

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In this episode, we're talking with longtime technician and Refrigeration Mentor Community Ambassador, Andrew Freeburg, about utilizing a consistent troubleshooting framework to get to the cause of issues faster and more accurately - no matter what system you're working on. We cover a variety of refrigeration topics - from extreme heat, to aging equipment, refrigerant changes, poor maintenance and managing long on-call hours. Andrew also shares how he prioritizes on-call calls, the importance of customer communication and teamwork during call surges. This episode is packed with a ton of great tips and advice for refrigeration techs to handle calls and address issues more efficiently and confidently.

In this episode, we discuss:

(00:23) Heat Wave Workloads

(04:09) High Head Troubleshooting

(07:04) Managing On-Calls

(07:46) Prioritizing Emergencies

(10:03) Troubleshooting Framework And Communication

(16:19) Reading The Wiring Diagram

(18:17) Digital Compressor Controls

(24:10) False Oil Trips

(28:53) Flash Codes And Resets

(35:41) Airflow Basic Checks

(38:41) Self Care In The Field

(40:57) Verifications

Helpful Links & Resources:

Episode 203. Supermarket Refrigeration Service Tech Tips with Andrew Freeburg

Episode 401. Troubleshoot Systems and Compressors Quicker (Get My Free Guide)

Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this conversation, we're talking about hwo to improve your CO2 refrigeration system troubleshooting by understanding the sequence of operations. By knowing the system and its sequence of operation, not skipping steps, and using facts, data points, and trend graphs to diagnose issues quicker and more confidently. We cover basics to check first—airflow, fan operation, load, dirty honeycombs/baffles, frozen coils, and proper defrost performance—and I'll share my "four pillar method" for learning CO2 systems.

In this episode, we discuss:

(02:12) The CO2 Troubleshooting Process

(04:58) Four Pillars of Learning CO2 Faster

(05:46) Know Normal Conditions

(06:43) Liquid Feed Basics

(09:09) Case Not Pulling Down

(10:13) Airflow and Frozen Coils

(12:28) Defrost Sequence Walkthrough

(15:19) Data Trends and AI

(17:32) CO2 System Controls Made Simple

(22:23) Better Field Habits

Helpful Links & Resources:

Episode 243. Step-By-Step Walkthrough of a CO2 Service Call with Patrick Gregory

Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster

Episode 423. Refrigeration Leak Detection & New Regulations with Leon Wurfel of Bueno Analytics

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, we cover electricity basics for refrigeration technicians - using and checking a meter, electrical safety, and key terms including voltage (electrical pressure), current (flow of electrons), resistance (opposition to flow), and Ohm's Law. We'll also review electrical terminology and walk through circuits, finding breaks in the path, the difference between series and parallel circuits, AC vs DC, conductors vs insulators, open/closed/short conditions wiring diagrams. Strong electrical fundamentals are critical for refrigeration technicians and will help you reduce troubleshooting time, callbacks, and jobs stress.

In this episode, we discuss:

(00:47) Meters And Electrical Basics

(02:21) Voltage Current Resistance

(05:18) Ohm's Law

(06:16) Power Watts And Horsepower

(08:10) Circuits And Breaks

(10:01) Series Vs Parallel

(11:46) AC Vs DC Power

(14:05) Open, Closed And Shorts

(15:39) Wiring Diagrams And Electrical Safety

Helpful Links & Resources:

Episode 371. A 6-Step Process for Faster Electrical Troubleshooting

Episode 323. Electrical Troubleshooting 101

Episode 259. CO2 Experts Live: Electrical Troubleshooting with Rusty Walker

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, we're talking about why the technicians who consistently invest in themselves are the ones who level up the fastest. Technical skills are only one part of becoming a great refrigeration technician—communication, customer service, leadership, problem-solving, and personal development all play a major role. I'll share real-world examples of technicians who have grown into leadership roles, built new areas of business, and even outgrown their companies by putting their careers ahead of simply doing their day jobs. We'll also discuss the value of mentorship, structured learning, finding your biggest knowledge gaps, and deliberately working on the things that make you uncomfortable.

In this episode, we cover:

(03:00) The Skills Beyond Technical Troubleshooting

(04:00) Moving From Technician To Manager

(05:00) Why Mentorship Can Accelerate Your Learning

(06:00) Learning From Other Technicians' Experience

(07:13) Developing Communication And Customer Service Skills

(08:00) Dealing With Difficult Customers And Repeat Service Calls

(10:00) The Difference Between Average And Great Technicians

(12:00) Using Manuals And Resources To Solve Problems

(13:00) Building Your Own Learning Library

(16:00) Putting Your Career Ahead Of Your Job

(17:00) Building A Broader Portfolio Of Refrigeration Skills

Helpful Links & Resources:

Episode 39. Invest In Your Refrigeration Knowledge

Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster

Episode 392. Transitioning From Technician to Manager: Building Leadership Skills in Refrigeration with Todd Ernest of Climate Pros

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, we're talking about the growing skills and knowledge gap in the refrigeration industry and why that gap represents a massive opportunity. With more experienced technicians retiring, increasingly complex equipment and new technologies like CO2 and A2Ls entering the field, the demand for highly skilled refrigeration technicians continues to grow. We talk about specialization, learning controls, startups and commissioning, becoming more resourceful, and building the skills that allow refrigeration technicians to solve harder problems and command higher wages.

In this episode, we discuss:

(00:48) The Growing Refrigeration Skills Gap

(02:00) Why Refrigeration Technicians Are In High Demand

(04:00) The Versatility Of A Refrigeration Technician

(06:00) Why Refrigeration Skills Create Career Opportunities

(08:00) Specializing In CO2, Controls And A2Ls

(12:00) Identifying Your Biggest Skill Gaps

(14:00) Learning Controls

(16:00) Why Modern Refrigeration Systems Are More Complex

(22:00) The Importance Of Mentorship And Asking Questions

(24:00) Specialization In Startups And Commissioning

(28:00) Adapting To New Refrigeration Technology

(30:00) Why Refrigeration Is A Recession-Resistant Career

(32:00) Adapting To The Next Generation Of Technicians

(34:00) The Opportunity Ahead For Refrigeration Technicians

Helpful Links & Resources:

Episode 374. Growing the Refrigeration Industry Globally with World Refrigeration Day Founder, Steve Gill

Episode 364. Addressing Technician Shortages & Oil Analysis

Episode 288. The Payoff of Investing Time & Money in Training with Jesse Stewart

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, I'm sharing some of the tips, resources and materials refrigerators should be checking out to learn refrigeration faster. These tips and resources need to be utilized both on that job and after work, things like manuals, processes, checklists, and investing in additional training after hours. We'll also discuss documenting service call steps, reviewing for missing details, and using on site data AI to refine concise checklists and get to the root of issues. These are the keys that the best techs use to stop guessing on service calls and solve issues faster and more confidently.

In this episode, we cover:

(01:51) Writing Things Down to Learn

(02:43) Repetition Builds Mastery

(03:14) CO2 Procedures Step by Step

(05:16 Teaching Like a Mentor

(07:08) Building A Framework for Any System

(08:55) Using AI in Refrigeration

(09:57) Knowing Normal Data

(11:20) Building Habits That Stick

Helpful Links & Resources:

BOOK: Atomic Habits by James Clear

Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster

Episode 288. The Payoff of Investing Time & Money in Training with Jesse Stewart

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, we're reviewing a recent field story from inside the Refrigeration Mentor Community of handling a "compressor proof/safety failure" alarm. Upon arrival, the compressor was running. But instead of assuming a nuisance trip, this episode walks through how confirm the cause of issue by running diagnostics using free manufacturer software (Copeland CoreSense). Being able to accurately to validate findings builds technician confidence, speeds up troubleshooting time and helps prevent future costly failures.

In this episode, we discuss:

(00:48) Compressor Trip Alarms

(02:23) Copeland CoreSense Basics

(04:02) Laptop and Cable Setup

(05:42) Connection Pain Points

(07:09) Fixing the Wiring

(08:42) How Validation Builds Confidence

(10:19) Refrigeration Troubleshooting Skills

Helpful Links & Resources:

Website: Copeland CoreSense

Episode 378. Field Stories: Compressor Failure, Case Freeze-Up Troubleshooting, and Electrical Safety

Episode 295. A Compressor Story: The Key to Faster Troubleshooting

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, we're talking about changing oil separators on a CO2 supermarket system. THis conversation stems from a recent field story from a fellow tech where the separator outlet valve kept leaking after pressure was relieved. We'll discuss the process for fixing the issue safely, and how this type of learning through community knowledge-sharing and continuing education is so important for all refrigeration technicians new and old to troubleshoot faster and more confidently. Want to join the next Refrigeration Community Meetup live? Click here to join free!

In this episode, we cover:

(02:20) Oil Separator Valve Fix

(02:59) Pressure Reversal Explained

(06:09) Why Mentorship Matters

(06:46) Refrigeration Career Path Tips

(07:28) Refrigeration Safety

Helpful Links & Resources:

Episode 330. Oil Issues in Refrigeration Systems

Episode 390. CO2 Oil Management (Part 1): Lubrication Basics, Oil Selection, Testing, and Troubleshooting with Alessandro Silva of Bitzer

Episode 71. Top Tips For Learning CO2 Refrigeration

Learn more about Leon on LinkedIn and Bueno Analytics Website: Bueno Analytics

In this episode we're, joined by Leon Wurfel, Founder of Bueno Analytics, to discuss refrigeration leak detection, particularily as it pertains to forthcoming new regulations in the industry. Leon dives into how leak detection is evolving as codes and regulations change, including AIM (American Innovation and Manufacturing) Act, as well as new software, improving issue prioritization, helping predict high-temp alarms. He also discusses how Bueno grew from commercial building energy-efficiency analytics into grocery refrigeration through a long partnership with Woolworths, and shares advice for technicians to get a login and use innovative analytics tools to reduce after-hours callouts.

In this episode, we cover:

(00:49) Leak Detection Is Changing

(06:32) Modern Leak Detection Models

(07:50) Seasonal Receiver Level Basics

(11:15) Reducing Leaks And Predicting Alarms

(13:12) Cutting After Hours Callouts

(15:52) Using Data To Sell Maintenance

(19:58) Stopping Energy Drift

(21:53) Setpoint and Alarm Drift

(22:41) Knowing the Normal Baseline

(25:07) Manual Inspections

(29:07) Older Controls

(33:14) AI Tools in Refrigeration

Helpful Tools & Resources:

Bueno LinkedIn Company Page: https://www.linkedin.com/company/buenoanalytics/

Video Testimonial from Woolworths: https://buenoanalytics.com/video-testimonial-woolworths-refrigeration-management/

Episode 334. 10-Point Rack Preventative Maintenance Checklist

Episode 263. The Importance of Understanding Trend Graphs with Andrew Freeburg

Episode 213. Supermarket Refrigeration Preventative Maintenance with Andrew Freeburg

Join the Refrigeration Mentor Hub here

Learn more about Refrigeration Mentor Customized Technical Training Programs at www.refrigerationmentor.com/courses

Join the Refrigeration Mentor Hub here

In this episode, we're taking a step back to talk about what it really takes to become a great refrigeration technician - the mindset and troubleshooting habits that separate technicians who simply change components from technicians who understand systems, find root causes, and solve harder problems with confidence. I'll also share practical troubleshooting principles and a preview of some major upcoming things for our Refrigeration Mentor Academy.

In this episode, we discuss:

(00:53) Why CO2 Refrigeration Knowledge Matters

(04:40) Being a Parts Changer vs A Skilled Tech

(07:36) TX Valve and Airflow Checks

(12:21) Numbers Tell The Story

(14:23) Heat Reclaim Troubleshooting

(21:30) Pattern Recognition and Fast Tracking Learning

(28:05) Academy Sneak Peek

(31:28) Mentoring and Using AI

Helpful Links & Resources:

Episode 413. My 4-Pillar Framework to Learn CO2 Refrigeration Faster

Episode 299. Basic Refrigeration 101

Episode 295. A Compressor Story: The Key to Faster Troubleshooting