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Tag: split systems

Technical Services

How to Check the CTB During a Cooling Call

Kevin ThigpenJanuary 5, 2022October 8, 2024

The CTB (central terminal board) is a board that is often replaced unnecessarily. A CTB is simply a junction board…

Technical Services

Scrolling Marquee Basics and Resetting Error Codes

Steven SimmonsDecember 30, 2021October 21, 2024

On units that are equipped with a ComfortLink controls package, the user interface for the machine will include a Scrolling…

Technical Services

Where Does the Orange Wire Go On a Carrier Commercial Heat Pump?

Steven SimmonsOctober 14, 2021October 21, 2024

Model numbers that this document pertains to: 38AUQ/40RUQ, 50FCQ, 50GCQ, 50HCQ, 50KCQ, 50TCQ No matter how long you have been…

Technical Services

ABB Drives: How to Set Up on a Light Commercial System

Steven SimmonsSeptember 2, 2021October 21, 2024

Commercial HVAC Have you seen an ABB Variable Frequency Drive or VFD for short? Odds are if you have installed…

Technical Services

Easy Select Board in FV4 Fan Coils

Bubba MooreFebruary 9, 2021October 8, 2024

The easy select board is used in the FV4 HVAC fan coil to configure the ECM motor to modify its…

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