RDT — Refrigeration Design Technologies

Training & Technical Resources

Learn directly from the experts who build and support these systems.

We offer free, hands-on training and technical guidance to help you install, operate, and maintain your RDT equipment with confidence. Contact our warranty and technical support team to schedule training, or explore videos, guides, and resources below.

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Find What You Need

Training Videos

Short practical walkthroughs and tips

Troubleshooting

Quick answers to common issues

Maintenance Resources

Best practices and preventative care

Product Resources

Product-by-Product Resources and FAQs

Articles & Tips

Educational blog content

Warranty & Support

Connect with our Team

Training Videos

From quick fixes to in-depth walkthroughs, these videos are built to help you diagnose, maintain, and get the most out of your RDT equipment.

 

Want more? Our full video library lives on YouTube—subscribe to catch every new upload.

1:10

TOP 3 ALARM CODES 

60-second explanation of the PSA, LSH and HSH alarm codes and what they mean.

1:10

COA ALARM CODE

Starting up your unit and seeing this code? Here's what it means.

1:45

DOR ALARM CODE

Common to see on startup, here's what the code means and how to handle it.

View Full Video Library on YouTube

Additional Resources

Articles & Insights

MAINTENANCE

Refrigeration Maintenance Planning for Reliable Walk-In Performance

Simple habits and routines that extend equipment life and reduce service calls.

Read Article
WHAT TO WATCH FOR

How to Spot Refrigeration System Failures Before They Happen

Most refrigeration failures have early warning signs. 

Read Article
ENERGY EFFICIENCY

4 Simple Ways to Keep Cold Air Inside Your Walk-In

 Tips for reducing cold air loss and lowering energy costs.

Read Article

Downloadable Tools

PDF

Maintenance Checklist

PDF

A2L REFERENCE GUIDE

PDF

A2L FAQs

PDF

SMART STARTUP GUIDE

Troubleshooting & Maintenance

These are the most common questions our technical team receives from technicians and service teams.

Article + Video

Common Alarm Conditions

The alarms technicians encounter most often — what triggers them, what to inspect, and how to resolve them quickly.

Read Article
Watch Video
Educational Article

Error Codes & What They Mean

A grouped reference covering the most common error codes, their causes, and the correct steps to diagnose and resolve each one.

Read Article
Checklist + Tips

Preventative Maintenance Tips

Quick wins and scheduled routines that protect equipment performance and reduce the likelihood of a service call.

Download Checklist

Frequently Asked Questions

The three most recent training videos are featured on this page. Our full video library is available on the RDT YouTube channel.

Contact our warranty and technical team directly by phone or email to arrange a training session. Training is free and can be conducted on-site or at an RDT facility. See the Free Hands-On Training section above for contact details.

Reach out to the RDT Warranty & Technical team by phone at (972) 937-3215 and selecting option 2 or email techsupport@rdtonline.com. Our team is available during business hours and typically responds within one business day.

We recommend reviewing our Troubleshooting & Maintenance resources first. Many issues can be resolved quickly using these guides. If the issue persists, our team is ready to help.

All product resources are available on the Brochures and Guides page.

Need Help or Want to Learn More?

Our technical support team is here to help — whether you need training, support, or just a quick answer.