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…
Author: Brett Stewart
VRF Tech Support & Equipment Verification
Southwest District
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…
48GC Package Unit & System Sensor Smoke Detector D4120 Setup
Smoke detectors can be used in many different residential and commercial applications. They can be utilized using the smoke shutdown…
Toshiba/Carrier U-Series Installation and Troubleshooting: L11 and E17 Error Codes
Installation of a heat recovery VRF system allows multi-zone heating and cooling. A heat recovery system allows you to heat…
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…
Relays and Relay Capabilities (RIBU1C & RIBU2C)
There are many capabilities and functions of RIB relays. The RIBU1C and the RIBU2C are two of the most common…