Technical Articles & Guides

Troubleshooting Guide

Commercial Cabinet Not Cooling? A Step-by-Step Controller Troubleshooting Guide

Compressor hot but not running? Both compressor and fan off? A step-by-step guide to locating the fault — and whether to adjust a setting, replace the sensor, or replace the controller.

4 min read · Troubleshooting Guide Read Article

Packaging Guide

How We Pack and Ship Your Refrigeration Controllers

Sturdy export-grade cardboard cartons, individual protection inside and custom packing for OEM orders — every controller arrives clean, dry and ready to install.

3 min read · Packaging Guide Read Article

Engineering Guide

Digital vs Mechanical Refrigeration Thermostats: What OEMs Should Choose

A practical comparison of accuracy, defrost control, hysteresis and cost — and why commercial refrigeration OEMs are switching.

4 min read · Engineering Guide Read Article

Engineering Guide

Relay Sizing for Refrigeration Controllers: Avoid Compressor Relay Burnout

Locked-rotor current is 5–7× running current. Here's how to size relay outputs so contacts don't weld shut in the field.

4 min read · Engineering Guide Read Article

Case Study

120,000 Units for a Southeast Asian Government Project

How we customized waterproof protection and 110-250V wide-voltage controllers for a 120,000-unit government refrigeration project in Southeast Asia.

4 min read · OEM Case Study Read Article

Technical Article

Understanding Off-Cycle Defrost Timing Control in Commercial Refrigeration

Why defrost matters, the five phases of an off-cycle defrost cycle, the key parameters to configure, and best practices for keeping evaporator coils frost-free in beverage coolers and display cases.

8 min read · Engineering Guide Read Article

OEM Guide

OEM Custom Temperature Controller: 4 Key Specifications to Confirm Before You Order

A concise 4-item checklist for refrigeration OEMs: load types and output channels, relay sizing from load power, integrated vs. split-type mounting, and function/parameter configuration.

5 min read · OEM Specification Guide Read Article

Parameter Guide

How to Set the Right Hysteresis for Your Commercial Freezer

Balance temperature stability, compressor life and energy use. Recommended hysteresis values for frozen meat, ice cream, beverage coolers and fresh food display.

4 min read · Parameter Guide Read Article