What is an Electrical Short?
Everyone has heard the phrase: “it’s shorted.” What does this actually mean and how do you diagnose it? Let’s start…
Category: Technical Services
Ion® Wireless Setup
Setting up a wi-fi controller is a task sometimes but the information provided will help speed this process up. The…
Where Does the Orange Wire Go On a Carrier Commercial Heat Pump?
Model numbers that this document pertains to: 38AUQ/40RUQ, 50FCQ, 50GCQ, 50HCQ, 50KCQ, 50TCQ No matter how long you have been…
Ignition Proven Fault Code 6
An ignition fault is a common fault with a furnace and it could be caused by several things. For example,…
System Vu Controller Pt 1
The commercial and light commercial equipment today has changed so much from the days of mechanical time clocks and relays.…
Furnace Setup Switch
This month I will be covering the Switch Setup on an 80 % Furnace N80VSL Model. The furnace control board…
ABB Drives: How to Set Up on a Light Commercial System
Commercial HVAC Have you seen an ABB Variable Frequency Drive or VFD for short? Odds are if you have installed…
Measuring Airflow Using Temperature Rise Method
What is airflow in a heating and cooling system? Why do we need to know what the airflow of a…
Using a Standard Thermostat with a Communicating System for Emergency Operation
On rare occasions the infinity wall controllers fail. Sometimes, this failure is after hours and the supply house is closed.…
Easy Select Board in FV4 Fan Coils
The easy select board is used in the FV4 HVAC fan coil to configure the ECM motor to modify its…
