Troubleshooting PWM Furnace Motors
The blower motor has a 115 VAC applied to it anytime the furnace is powered. First manually close the blower…
Tag: basic training
Aluminum Fin Surface Oxidation On Air-Cooling Coils
Have you ever received a call from a customer about “white flakes,” dust, or particles blowing out of ductwork in…
Heat Stroke Symptoms & Hydration Tips
As you all know, working in the AC business doesn’t always mean working in air conditioning! In this article, we…
Water Blowoff
Water blowoff is caused by unconditioned air entering the return air stream from leaks in the return duct, wall penetrations…
Introduction to Duct Design & Static Tips
What all goes into “duct design”? Most important is having a balanced system, meaning what comes in (return) must go…
Dirty Sock Syndrome
What It Is and Isn’t Dirty Sock Syndrome isn’t about flawed design or material in HVAC systems. It’s a term…
Infinity/Evolution Server Connection Issues
The most effective solution to correct the server connection issue is to connect to a dedicated 2.4G router. Connecting a…
Ecobee Dehumidification Control
This section describes how to setup an ecobee thermostat to control a standalone dehumidifier or a forced air furnace/air-handler that…
Ecobee Free Cooling
The ventilator control capabilities depend on the type of ventilator installed which can be either a HRV, ERV or standard…
Defrost Board Troubleshooting
I want to go over the process of troubleshooting a heat pump defrost board. This includes checking for common issues.…
