Understanding Active Dissipation
Along with new refrigerant for 2025, we’re also seeing new components for safety to be compatible with new Federal guidelines. …
Tag: Ductless
Understanding A Model Number
Why would you need to know what the letters and numbers in the model number represent? Can knowing the information…
45 MBCA Ductless Unit and the “CP” Error Code
Most ductless products have all of the error codes listed in the installation and service manuals. Error codes listed in…
Ductless Units and Compatibility Verification
There are several different types of ductless heating and cooling systems. These systems can be combined with various indoor and…
Ductless Systems: Solid vs Stranded Wire
There are many different options and advantages to using a ductless mini-split system. From new construction installation to a retrofit…
Ductless Commission/Testing In Heat Mode
Have you ever installed a mini split in the summertime? During the commission the AC would work well, but in…
The Dreaded P4 Code
Have you ever shown up to a service call on a Carrier/Bryant/WeatherMaker (Midea) ductless system and found it locked out…
38MU/40MU Crossover System
In this article, I will explain how to wire the new crossover system for 24V communication or scenario 3 using…
38MU/40MU 18/8 Low Voltage Wiring
This month, I will be covering how to properly wire a 38MU/40MU for 24V operations and setting up the DIP…
DUCKT-STRIP Wiring
DUCKT-STRIP wire is a great product for ductless units when used properly. The wire is used to power and communicate…
